/************************************************************************* * GLFW 3.5 - www.glfw.org * A library for OpenGL, window and input *------------------------------------------------------------------------ * Copyright (c) 2002-2006 Marcus Geelnard * Copyright (c) 2006-2019 Camilla Löwy <[email protected]> * * This software is provided 'as-is', without any express or implied * warranty. In no event will the authors be held liable for any damages * arising from the use of this software. * * Permission is granted to anyone to use this software for any purpose, * including commercial applications, and to alter it and redistribute it * freely, subject to the following restrictions: * * 1. The origin of this software must not be misrepresented; you must not * claim that you wrote the original software. If you use this software * in a product, an acknowledgment in the product documentation would * be appreciated but is not required. * * 2. Altered source versions must be plainly marked as such, and must not * be misrepresented as being the original software. * * 3. This notice may not be removed or altered from any source * distribution. * *************************************************************************/ #ifndef _glfw3_h_ #define _glfw3_h_ #ifdef __cplusplus extern "C" { #endif /************************************************************************* * Doxygen documentation *************************************************************************/ /*! @file glfw3.h * @brief The header of the GLFW 3 API. * * This is the header file of the GLFW 3 API. It defines all its types and * declares all its functions. * * For more information about how to use this file, see @ref build_include. */ /*! @defgroup context Context reference * @brief Functions and types related to OpenGL and OpenGL ES contexts. * * This is the reference documentation for OpenGL and OpenGL ES context related * functions. For more task-oriented information, see the @ref context_guide. */ /*! @defgroup vulkan Vulkan support reference * @brief Functions and types related to Vulkan. * * This is the reference documentation for Vulkan related functions and types. * For more task-oriented information, see the @ref vulkan_guide. */ /*! @defgroup init Initialization, version and error reference * @brief Functions and types related to initialization and error handling. * * This is the reference documentation for initialization and termination of * the library, version management and error handling. For more task-oriented * information, see the @ref intro_guide. */ /*! @defgroup input Input reference * @brief Functions and types related to input handling. * * This is the reference documentation for input related functions and types. * For more task-oriented information, see the @ref input_guide. */ /*! @defgroup monitor Monitor reference * @brief Functions and types related to monitors. * * This is the reference documentation for monitor related functions and types. * For more task-oriented information, see the @ref monitor_guide. */ /*! @defgroup window Window reference * @brief Functions and types related to windows. * * This is the reference documentation for window related functions and types, * including creation, deletion and event polling. For more task-oriented * information, see the @ref window_guide. */ /************************************************************************* * Compiler- and platform-specific preprocessor work *************************************************************************/ /* If we are we on Windows, we want a single define for it. */ #if !defined(_WIN32) && (defined(__WIN32__) || defined(WIN32) || defined(__MINGW32__)) #define _WIN32 #endif /* _WIN32 */ /* Include because most Windows GLU headers need wchar_t and * the macOS OpenGL header blocks the definition of ptrdiff_t by glext.h. * Include it unconditionally to avoid surprising side-effects. */ #include <stddef.h> /* Include because it is needed by Vulkan and related functions. * Include it unconditionally to avoid surprising side-effects. */ #include <stdint.h> #if defined(GLFW_INCLUDE_VULKAN) #include <vulkan/vulkan.h> #endif /* Vulkan header */ /* The Vulkan header may have indirectly included windows.h (because of * VK_USE_PLATFORM_WIN32_KHR) so we offer our replacement symbols after it. */ /* It is customary to use APIENTRY for OpenGL function pointer declarations on * all platforms. Additionally, the Windows OpenGL header needs APIENTRY. */ #if !defined(APIENTRY) #if defined(_WIN32) #define APIENTRY … #else #define APIENTRY #endif #define GLFW_APIENTRY_DEFINED #endif /* APIENTRY */ /* Some Windows OpenGL headers need this. */ #if !defined(WINGDIAPI) && defined(_WIN32) #define WINGDIAPI … #define GLFW_WINGDIAPI_DEFINED #endif /* WINGDIAPI */ /* Some Windows GLU headers need this. */ #if !defined(CALLBACK) && defined(_WIN32) #define CALLBACK … #define GLFW_CALLBACK_DEFINED #endif /* CALLBACK */ /* Include the chosen OpenGL or OpenGL ES headers. */ #if defined(GLFW_INCLUDE_ES1) #include <GLES/gl.h> #if defined(GLFW_INCLUDE_GLEXT) #include <GLES/glext.h> #endif #elif defined(GLFW_INCLUDE_ES2) #include <GLES2/gl2.h> #if defined(GLFW_INCLUDE_GLEXT) #include <GLES2/gl2ext.h> #endif #elif defined(GLFW_INCLUDE_ES3) #include <GLES3/gl3.h> #if defined(GLFW_INCLUDE_GLEXT) #include <GLES2/gl2ext.h> #endif #elif defined(GLFW_INCLUDE_ES31) #include <GLES3/gl31.h> #if defined(GLFW_INCLUDE_GLEXT) #include <GLES2/gl2ext.h> #endif #elif defined(GLFW_INCLUDE_ES32) #include <GLES3/gl32.h> #if defined(GLFW_INCLUDE_GLEXT) #include <GLES2/gl2ext.h> #endif #elif defined(GLFW_INCLUDE_GLCOREARB) #if defined(__APPLE__) #include <OpenGL/gl3.h> #if defined(GLFW_INCLUDE_GLEXT) #include <OpenGL/gl3ext.h> #endif /*GLFW_INCLUDE_GLEXT*/ #else /*__APPLE__*/ #include <GL/glcorearb.h> #if defined(GLFW_INCLUDE_GLEXT) #include <GL/glext.h> #endif #endif /*__APPLE__*/ #elif defined(GLFW_INCLUDE_GLU) #if defined(__APPLE__) #if defined(GLFW_INCLUDE_GLU) #include <OpenGL/glu.h> #endif #else /*__APPLE__*/ #if defined(GLFW_INCLUDE_GLU) #include <GL/glu.h> #endif #endif /*__APPLE__*/ #elif !defined(GLFW_INCLUDE_NONE) && \ !defined(__gl_h_) && \ !defined(__gles1_gl_h_) && \ !defined(__gles2_gl2_h_) && \ !defined(__gles2_gl3_h_) && \ !defined(__gles2_gl31_h_) && \ !defined(__gles2_gl32_h_) && \ !defined(__gl_glcorearb_h_) && \ !defined(__gl2_h_) /*legacy*/ && \ !defined(__gl3_h_) /*legacy*/ && \ !defined(__gl31_h_) /*legacy*/ && \ !defined(__gl32_h_) /*legacy*/ && \ !defined(__glcorearb_h_) /*legacy*/ && \ !defined(__GL_H__) /*non-standard*/ && \ !defined(__gltypes_h_) /*non-standard*/ && \ !defined(__glee_h_) /*non-standard*/ #if defined(__APPLE__) #if !defined(GLFW_INCLUDE_GLEXT) #define GL_GLEXT_LEGACY #endif #include <OpenGL/gl.h> #else /*__APPLE__*/ #include <GL/gl.h> #if defined(GLFW_INCLUDE_GLEXT) #include <GL/glext.h> #endif #endif /*__APPLE__*/ #endif /* OpenGL and OpenGL ES headers */ #if defined(GLFW_DLL) && defined(_GLFW_BUILD_DLL) /* GLFW_DLL must be defined by applications that are linking against the DLL * version of the GLFW library. _GLFW_BUILD_DLL is defined by the GLFW * configuration header when compiling the DLL version of the library. */ #error "You must not have both GLFW_DLL and _GLFW_BUILD_DLL defined" #endif /* GLFWAPI is used to declare public API functions for export * from the DLL / shared library / dynamic library. */ #if defined(_WIN32) && defined(_GLFW_BUILD_DLL) /* We are building GLFW as a Win32 DLL */ #define GLFWAPI … #elif defined(_WIN32) && defined(GLFW_DLL) /* We are calling a GLFW Win32 DLL */ #define GLFWAPI … #elif defined(__GNUC__) && defined(_GLFW_BUILD_DLL) /* We are building GLFW as a Unix shared library */ #define GLFWAPI … #else #define GLFWAPI #endif /************************************************************************* * GLFW API tokens *************************************************************************/ /*! @name GLFW version macros * @{ */ /*! @brief The major version number of the GLFW header. * * The major version number of the GLFW header. This is incremented when the * API is changed in non-compatible ways. * @ingroup init */ #define GLFW_VERSION_MAJOR … /*! @brief The minor version number of the GLFW header. * * The minor version number of the GLFW header. This is incremented when * features are added to the API but it remains backward-compatible. * @ingroup init */ #define GLFW_VERSION_MINOR … /*! @brief The revision number of the GLFW header. * * The revision number of the GLFW header. This is incremented when a bug fix * release is made that does not contain any API changes. * @ingroup init */ #define GLFW_VERSION_REVISION … /*! @} */ /*! @brief One. * * This is only semantic sugar for the number 1. You can instead use `1` or * `true` or `_True` or `GL_TRUE` or `VK_TRUE` or anything else that is equal * to one. * * @ingroup init */ #define GLFW_TRUE … /*! @brief Zero. * * This is only semantic sugar for the number 0. You can instead use `0` or * `false` or `_False` or `GL_FALSE` or `VK_FALSE` or anything else that is * equal to zero. * * @ingroup init */ #define GLFW_FALSE … /*! @name Key and button actions * @{ */ /*! @brief The key or mouse button was released. * * The key or mouse button was released. * * @ingroup input */ #define GLFW_RELEASE … /*! @brief The key or mouse button was pressed. * * The key or mouse button was pressed. * * @ingroup input */ #define GLFW_PRESS … /*! @brief The key was held down until it repeated. * * The key was held down until it repeated. * * @ingroup input */ #define GLFW_REPEAT … /*! @} */ /*! @defgroup hat_state Joystick hat states * @brief Joystick hat states. * * See [joystick hat input](@ref joystick_hat) for how these are used. * * @ingroup input * @{ */ #define GLFW_HAT_CENTERED … #define GLFW_HAT_UP … #define GLFW_HAT_RIGHT … #define GLFW_HAT_DOWN … #define GLFW_HAT_LEFT … #define GLFW_HAT_RIGHT_UP … #define GLFW_HAT_RIGHT_DOWN … #define GLFW_HAT_LEFT_UP … #define GLFW_HAT_LEFT_DOWN … /*! @ingroup input */ #define GLFW_KEY_UNKNOWN … /*! @} */ /*! @defgroup keys Keyboard key tokens * @brief Keyboard key tokens. * * See [key input](@ref input_key) for how these are used. * * These key codes are inspired by the _USB HID Usage Tables v1.12_ (p. 53-60), * but re-arranged to map to 7-bit ASCII for printable keys (function keys are * put in the 256+ range). * * The naming of the key codes follow these rules: * - The US keyboard layout is used * - Names of printable alphanumeric characters are used (e.g. "A", "R", * "3", etc.) * - For non-alphanumeric characters, Unicode:ish names are used (e.g. * "COMMA", "LEFT_SQUARE_BRACKET", etc.). Note that some names do not * correspond to the Unicode standard (usually for brevity) * - Keys that lack a clear US mapping are named "WORLD_x" * - For non-printable keys, custom names are used (e.g. "F4", * "BACKSPACE", etc.) * * @ingroup input * @{ */ /* Printable keys */ #define GLFW_KEY_SPACE … #define GLFW_KEY_APOSTROPHE … #define GLFW_KEY_COMMA … #define GLFW_KEY_MINUS … #define GLFW_KEY_PERIOD … #define GLFW_KEY_SLASH … #define GLFW_KEY_0 … #define GLFW_KEY_1 … #define GLFW_KEY_2 … #define GLFW_KEY_3 … #define GLFW_KEY_4 … #define GLFW_KEY_5 … #define GLFW_KEY_6 … #define GLFW_KEY_7 … #define GLFW_KEY_8 … #define GLFW_KEY_9 … #define GLFW_KEY_SEMICOLON … #define GLFW_KEY_EQUAL … #define GLFW_KEY_A … #define GLFW_KEY_B … #define GLFW_KEY_C … #define GLFW_KEY_D … #define GLFW_KEY_E … #define GLFW_KEY_F … #define GLFW_KEY_G … #define GLFW_KEY_H … #define GLFW_KEY_I … #define GLFW_KEY_J … #define GLFW_KEY_K … #define GLFW_KEY_L … #define GLFW_KEY_M … #define GLFW_KEY_N … #define GLFW_KEY_O … #define GLFW_KEY_P … #define GLFW_KEY_Q … #define GLFW_KEY_R … #define GLFW_KEY_S … #define GLFW_KEY_T … #define GLFW_KEY_U … #define GLFW_KEY_V … #define GLFW_KEY_W … #define GLFW_KEY_X … #define GLFW_KEY_Y … #define GLFW_KEY_Z … #define GLFW_KEY_LEFT_BRACKET … #define GLFW_KEY_BACKSLASH … #define GLFW_KEY_RIGHT_BRACKET … #define GLFW_KEY_GRAVE_ACCENT … #define GLFW_KEY_WORLD_1 … #define GLFW_KEY_WORLD_2 … /* Function keys */ #define GLFW_KEY_ESCAPE … #define GLFW_KEY_ENTER … #define GLFW_KEY_TAB … #define GLFW_KEY_BACKSPACE … #define GLFW_KEY_INSERT … #define GLFW_KEY_DELETE … #define GLFW_KEY_RIGHT … #define GLFW_KEY_LEFT … #define GLFW_KEY_DOWN … #define GLFW_KEY_UP … #define GLFW_KEY_PAGE_UP … #define GLFW_KEY_PAGE_DOWN … #define GLFW_KEY_HOME … #define GLFW_KEY_END … #define GLFW_KEY_CAPS_LOCK … #define GLFW_KEY_SCROLL_LOCK … #define GLFW_KEY_NUM_LOCK … #define GLFW_KEY_PRINT_SCREEN … #define GLFW_KEY_PAUSE … #define GLFW_KEY_F1 … #define GLFW_KEY_F2 … #define GLFW_KEY_F3 … #define GLFW_KEY_F4 … #define GLFW_KEY_F5 … #define GLFW_KEY_F6 … #define GLFW_KEY_F7 … #define GLFW_KEY_F8 … #define GLFW_KEY_F9 … #define GLFW_KEY_F10 … #define GLFW_KEY_F11 … #define GLFW_KEY_F12 … #define GLFW_KEY_F13 … #define GLFW_KEY_F14 … #define GLFW_KEY_F15 … #define GLFW_KEY_F16 … #define GLFW_KEY_F17 … #define GLFW_KEY_F18 … #define GLFW_KEY_F19 … #define GLFW_KEY_F20 … #define GLFW_KEY_F21 … #define GLFW_KEY_F22 … #define GLFW_KEY_F23 … #define GLFW_KEY_F24 … #define GLFW_KEY_F25 … #define GLFW_KEY_KP_0 … #define GLFW_KEY_KP_1 … #define GLFW_KEY_KP_2 … #define GLFW_KEY_KP_3 … #define GLFW_KEY_KP_4 … #define GLFW_KEY_KP_5 … #define GLFW_KEY_KP_6 … #define GLFW_KEY_KP_7 … #define GLFW_KEY_KP_8 … #define GLFW_KEY_KP_9 … #define GLFW_KEY_KP_DECIMAL … #define GLFW_KEY_KP_DIVIDE … #define GLFW_KEY_KP_MULTIPLY … #define GLFW_KEY_KP_SUBTRACT … #define GLFW_KEY_KP_ADD … #define GLFW_KEY_KP_ENTER … #define GLFW_KEY_KP_EQUAL … #define GLFW_KEY_LEFT_SHIFT … #define GLFW_KEY_LEFT_CONTROL … #define GLFW_KEY_LEFT_ALT … #define GLFW_KEY_LEFT_SUPER … #define GLFW_KEY_RIGHT_SHIFT … #define GLFW_KEY_RIGHT_CONTROL … #define GLFW_KEY_RIGHT_ALT … #define GLFW_KEY_RIGHT_SUPER … #define GLFW_KEY_MENU … #define GLFW_KEY_LAST … /*! @} */ /*! @defgroup mods Modifier key flags * @brief Modifier key flags. * * See [key input](@ref input_key) for how these are used. * * @ingroup input * @{ */ /*! @brief If this bit is set one or more Shift keys were held down. * * If this bit is set one or more Shift keys were held down. */ #define GLFW_MOD_SHIFT … /*! @brief If this bit is set one or more Control keys were held down. * * If this bit is set one or more Control keys were held down. */ #define GLFW_MOD_CONTROL … /*! @brief If this bit is set one or more Alt keys were held down. * * If this bit is set one or more Alt keys were held down. */ #define GLFW_MOD_ALT … /*! @brief If this bit is set one or more Super keys were held down. * * If this bit is set one or more Super keys were held down. */ #define GLFW_MOD_SUPER … /*! @brief If this bit is set the Caps Lock key is enabled. * * If this bit is set the Caps Lock key is enabled and the @ref * GLFW_LOCK_KEY_MODS input mode is set. */ #define GLFW_MOD_CAPS_LOCK … /*! @brief If this bit is set the Num Lock key is enabled. * * If this bit is set the Num Lock key is enabled and the @ref * GLFW_LOCK_KEY_MODS input mode is set. */ #define GLFW_MOD_NUM_LOCK … /*! @} */ /*! @defgroup buttons Mouse buttons * @brief Mouse button IDs. * * See [mouse button input](@ref input_mouse_button) for how these are used. * * @ingroup input * @{ */ #define GLFW_MOUSE_BUTTON_1 … #define GLFW_MOUSE_BUTTON_2 … #define GLFW_MOUSE_BUTTON_3 … #define GLFW_MOUSE_BUTTON_4 … #define GLFW_MOUSE_BUTTON_5 … #define GLFW_MOUSE_BUTTON_6 … #define GLFW_MOUSE_BUTTON_7 … #define GLFW_MOUSE_BUTTON_8 … #define GLFW_MOUSE_BUTTON_LAST … #define GLFW_MOUSE_BUTTON_LEFT … #define GLFW_MOUSE_BUTTON_RIGHT … #define GLFW_MOUSE_BUTTON_MIDDLE … /*! @} */ /*! @defgroup joysticks Joysticks * @brief Joystick IDs. * * See [joystick input](@ref joystick) for how these are used. * * @ingroup input * @{ */ #define GLFW_JOYSTICK_1 … #define GLFW_JOYSTICK_2 … #define GLFW_JOYSTICK_3 … #define GLFW_JOYSTICK_4 … #define GLFW_JOYSTICK_5 … #define GLFW_JOYSTICK_6 … #define GLFW_JOYSTICK_7 … #define GLFW_JOYSTICK_8 … #define GLFW_JOYSTICK_9 … #define GLFW_JOYSTICK_10 … #define GLFW_JOYSTICK_11 … #define GLFW_JOYSTICK_12 … #define GLFW_JOYSTICK_13 … #define GLFW_JOYSTICK_14 … #define GLFW_JOYSTICK_15 … #define GLFW_JOYSTICK_16 … #define GLFW_JOYSTICK_LAST … /*! @} */ /*! @defgroup gamepad_buttons Gamepad buttons * @brief Gamepad buttons. * * See @ref gamepad for how these are used. * * @ingroup input * @{ */ #define GLFW_GAMEPAD_BUTTON_A … #define GLFW_GAMEPAD_BUTTON_B … #define GLFW_GAMEPAD_BUTTON_X … #define GLFW_GAMEPAD_BUTTON_Y … #define GLFW_GAMEPAD_BUTTON_LEFT_BUMPER … #define GLFW_GAMEPAD_BUTTON_RIGHT_BUMPER … #define GLFW_GAMEPAD_BUTTON_BACK … #define GLFW_GAMEPAD_BUTTON_START … #define GLFW_GAMEPAD_BUTTON_GUIDE … #define GLFW_GAMEPAD_BUTTON_LEFT_THUMB … #define GLFW_GAMEPAD_BUTTON_RIGHT_THUMB … #define GLFW_GAMEPAD_BUTTON_DPAD_UP … #define GLFW_GAMEPAD_BUTTON_DPAD_RIGHT … #define GLFW_GAMEPAD_BUTTON_DPAD_DOWN … #define GLFW_GAMEPAD_BUTTON_DPAD_LEFT … #define GLFW_GAMEPAD_BUTTON_LAST … #define GLFW_GAMEPAD_BUTTON_CROSS … #define GLFW_GAMEPAD_BUTTON_CIRCLE … #define GLFW_GAMEPAD_BUTTON_SQUARE … #define GLFW_GAMEPAD_BUTTON_TRIANGLE … /*! @} */ /*! @defgroup gamepad_axes Gamepad axes * @brief Gamepad axes. * * See @ref gamepad for how these are used. * * @ingroup input * @{ */ #define GLFW_GAMEPAD_AXIS_LEFT_X … #define GLFW_GAMEPAD_AXIS_LEFT_Y … #define GLFW_GAMEPAD_AXIS_RIGHT_X … #define GLFW_GAMEPAD_AXIS_RIGHT_Y … #define GLFW_GAMEPAD_AXIS_LEFT_TRIGGER … #define GLFW_GAMEPAD_AXIS_RIGHT_TRIGGER … #define GLFW_GAMEPAD_AXIS_LAST … /*! @} */ /*! @defgroup errors Error codes * @brief Error codes. * * See [error handling](@ref error_handling) for how these are used. * * @ingroup init * @{ */ /*! @brief No error has occurred. * * No error has occurred. * * @analysis Yay. */ #define GLFW_NO_ERROR … /*! @brief GLFW has not been initialized. * * This occurs if a GLFW function was called that must not be called unless the * library is [initialized](@ref intro_init). * * @analysis Application programmer error. Initialize GLFW before calling any * function that requires initialization. */ #define GLFW_NOT_INITIALIZED … /*! @brief No context is current for this thread. * * This occurs if a GLFW function was called that needs and operates on the * current OpenGL or OpenGL ES context but no context is current on the calling * thread. One such function is @ref glfwSwapInterval. * * @analysis Application programmer error. Ensure a context is current before * calling functions that require a current context. */ #define GLFW_NO_CURRENT_CONTEXT … /*! @brief One of the arguments to the function was an invalid enum value. * * One of the arguments to the function was an invalid enum value, for example * requesting @ref GLFW_RED_BITS with @ref glfwGetWindowAttrib. * * @analysis Application programmer error. Fix the offending call. */ #define GLFW_INVALID_ENUM … /*! @brief One of the arguments to the function was an invalid value. * * One of the arguments to the function was an invalid value, for example * requesting a non-existent OpenGL or OpenGL ES version like 2.7. * * Requesting a valid but unavailable OpenGL or OpenGL ES version will instead * result in a @ref GLFW_VERSION_UNAVAILABLE error. * * @analysis Application programmer error. Fix the offending call. */ #define GLFW_INVALID_VALUE … /*! @brief A memory allocation failed. * * A memory allocation failed. * * @analysis A bug in GLFW or the underlying operating system. Report the bug * to our [issue tracker](https://github.com/glfw/glfw/issues). */ #define GLFW_OUT_OF_MEMORY … /*! @brief GLFW could not find support for the requested API on the system. * * GLFW could not find support for the requested API on the system. * * @analysis The installed graphics driver does not support the requested * API, or does not support it via the chosen context creation API. * Below are a few examples. * * @par * Some pre-installed Windows graphics drivers do not support OpenGL. AMD only * supports OpenGL ES via EGL, while Nvidia and Intel only support it via * a WGL or GLX extension. macOS does not provide OpenGL ES at all. The Mesa * EGL, OpenGL and OpenGL ES libraries do not interface with the Nvidia binary * driver. Older graphics drivers do not support Vulkan. */ #define GLFW_API_UNAVAILABLE … /*! @brief The requested OpenGL or OpenGL ES version is not available. * * The requested OpenGL or OpenGL ES version (including any requested context * or framebuffer hints) is not available on this machine. * * @analysis The machine does not support your requirements. If your * application is sufficiently flexible, downgrade your requirements and try * again. Otherwise, inform the user that their machine does not match your * requirements. * * @par * Future invalid OpenGL and OpenGL ES versions, for example OpenGL 4.8 if 5.0 * comes out before the 4.x series gets that far, also fail with this error and * not @ref GLFW_INVALID_VALUE, because GLFW cannot know what future versions * will exist. */ #define GLFW_VERSION_UNAVAILABLE … /*! @brief A platform-specific error occurred that does not match any of the * more specific categories. * * A platform-specific error occurred that does not match any of the more * specific categories. * * @analysis A bug or configuration error in GLFW, the underlying operating * system or its drivers, or a lack of required resources. Report the issue to * our [issue tracker](https://github.com/glfw/glfw/issues). */ #define GLFW_PLATFORM_ERROR … /*! @brief The requested format is not supported or available. * * If emitted during window creation, the requested pixel format is not * supported. * * If emitted when querying the clipboard, the contents of the clipboard could * not be converted to the requested format. * * @analysis If emitted during window creation, one or more * [hard constraints](@ref window_hints_hard) did not match any of the * available pixel formats. If your application is sufficiently flexible, * downgrade your requirements and try again. Otherwise, inform the user that * their machine does not match your requirements. * * @par * If emitted when querying the clipboard, ignore the error or report it to * the user, as appropriate. */ #define GLFW_FORMAT_UNAVAILABLE … /*! @brief The specified window does not have an OpenGL or OpenGL ES context. * * A window that does not have an OpenGL or OpenGL ES context was passed to * a function that requires it to have one. * * @analysis Application programmer error. Fix the offending call. */ #define GLFW_NO_WINDOW_CONTEXT … /*! @brief The specified cursor shape is not available. * * The specified standard cursor shape is not available, either because the * current platform cursor theme does not provide it or because it is not * available on the platform. * * @analysis Platform or system settings limitation. Pick another * [standard cursor shape](@ref shapes) or create a * [custom cursor](@ref cursor_custom). */ #define GLFW_CURSOR_UNAVAILABLE … /*! @brief The requested feature is not provided by the platform. * * The requested feature is not provided by the platform, so GLFW is unable to * implement it. The documentation for each function notes if it could emit * this error. * * @analysis Platform or platform version limitation. The error can be ignored * unless the feature is critical to the application. * * @par * A function call that emits this error has no effect other than the error and * updating any existing out parameters. */ #define GLFW_FEATURE_UNAVAILABLE … /*! @brief The requested feature is not implemented for the platform. * * The requested feature has not yet been implemented in GLFW for this platform. * * @analysis An incomplete implementation of GLFW for this platform, hopefully * fixed in a future release. The error can be ignored unless the feature is * critical to the application. * * @par * A function call that emits this error has no effect other than the error and * updating any existing out parameters. */ #define GLFW_FEATURE_UNIMPLEMENTED … /*! @brief Platform unavailable or no matching platform was found. * * If emitted during initialization, no matching platform was found. If the @ref * GLFW_PLATFORM init hint was set to `GLFW_ANY_PLATFORM`, GLFW could not detect any of * the platforms supported by this library binary, except for the Null platform. If the * init hint was set to a specific platform, it is either not supported by this library * binary or GLFW was not able to detect it. * * If emitted by a native access function, GLFW was initialized for a different platform * than the function is for. * * @analysis Failure to detect any platform usually only happens on non-macOS Unix * systems, either when no window system is running or the program was run from * a terminal that does not have the necessary environment variables. Fall back to * a different platform if possible or notify the user that no usable platform was * detected. * * Failure to detect a specific platform may have the same cause as above or be because * support for that platform was not compiled in. Call @ref glfwPlatformSupported to * check whether a specific platform is supported by a library binary. */ #define GLFW_PLATFORM_UNAVAILABLE … /*! @} */ /*! @addtogroup window * @{ */ /*! @brief Input focus window hint and attribute * * Input focus [window hint](@ref GLFW_FOCUSED_hint) or * [window attribute](@ref GLFW_FOCUSED_attrib). */ #define GLFW_FOCUSED … /*! @brief Window iconification window attribute * * Window iconification [window attribute](@ref GLFW_ICONIFIED_attrib). */ #define GLFW_ICONIFIED … /*! @brief Window resize-ability window hint and attribute * * Window resize-ability [window hint](@ref GLFW_RESIZABLE_hint) and * [window attribute](@ref GLFW_RESIZABLE_attrib). */ #define GLFW_RESIZABLE … /*! @brief Window visibility window hint and attribute * * Window visibility [window hint](@ref GLFW_VISIBLE_hint) and * [window attribute](@ref GLFW_VISIBLE_attrib). */ #define GLFW_VISIBLE … /*! @brief Window decoration window hint and attribute * * Window decoration [window hint](@ref GLFW_DECORATED_hint) and * [window attribute](@ref GLFW_DECORATED_attrib). */ #define GLFW_DECORATED … /*! @brief Window auto-iconification window hint and attribute * * Window auto-iconification [window hint](@ref GLFW_AUTO_ICONIFY_hint) and * [window attribute](@ref GLFW_AUTO_ICONIFY_attrib). */ #define GLFW_AUTO_ICONIFY … /*! @brief Window decoration window hint and attribute * * Window decoration [window hint](@ref GLFW_FLOATING_hint) and * [window attribute](@ref GLFW_FLOATING_attrib). */ #define GLFW_FLOATING … /*! @brief Window maximization window hint and attribute * * Window maximization [window hint](@ref GLFW_MAXIMIZED_hint) and * [window attribute](@ref GLFW_MAXIMIZED_attrib). */ #define GLFW_MAXIMIZED … /*! @brief Cursor centering window hint * * Cursor centering [window hint](@ref GLFW_CENTER_CURSOR_hint). */ #define GLFW_CENTER_CURSOR … /*! @brief Window framebuffer transparency hint and attribute * * Window framebuffer transparency * [window hint](@ref GLFW_TRANSPARENT_FRAMEBUFFER_hint) and * [window attribute](@ref GLFW_TRANSPARENT_FRAMEBUFFER_attrib). */ #define GLFW_TRANSPARENT_FRAMEBUFFER … /*! @brief Mouse cursor hover window attribute. * * Mouse cursor hover [window attribute](@ref GLFW_HOVERED_attrib). */ #define GLFW_HOVERED … /*! @brief Input focus on calling show window hint and attribute * * Input focus [window hint](@ref GLFW_FOCUS_ON_SHOW_hint) or * [window attribute](@ref GLFW_FOCUS_ON_SHOW_attrib). */ #define GLFW_FOCUS_ON_SHOW … /*! @brief Mouse input transparency window hint and attribute * * Mouse input transparency [window hint](@ref GLFW_MOUSE_PASSTHROUGH_hint) or * [window attribute](@ref GLFW_MOUSE_PASSTHROUGH_attrib). */ #define GLFW_MOUSE_PASSTHROUGH … /*! @brief Initial position x-coordinate window hint. * * Initial position x-coordinate [window hint](@ref GLFW_POSITION_X). */ #define GLFW_POSITION_X … /*! @brief Initial position y-coordinate window hint. * * Initial position y-coordinate [window hint](@ref GLFW_POSITION_Y). */ #define GLFW_POSITION_Y … /*! @brief Framebuffer bit depth hint. * * Framebuffer bit depth [hint](@ref GLFW_RED_BITS). */ #define GLFW_RED_BITS … /*! @brief Framebuffer bit depth hint. * * Framebuffer bit depth [hint](@ref GLFW_GREEN_BITS). */ #define GLFW_GREEN_BITS … /*! @brief Framebuffer bit depth hint. * * Framebuffer bit depth [hint](@ref GLFW_BLUE_BITS). */ #define GLFW_BLUE_BITS … /*! @brief Framebuffer bit depth hint. * * Framebuffer bit depth [hint](@ref GLFW_ALPHA_BITS). */ #define GLFW_ALPHA_BITS … /*! @brief Framebuffer bit depth hint. * * Framebuffer bit depth [hint](@ref GLFW_DEPTH_BITS). */ #define GLFW_DEPTH_BITS … /*! @brief Framebuffer bit depth hint. * * Framebuffer bit depth [hint](@ref GLFW_STENCIL_BITS). */ #define GLFW_STENCIL_BITS … /*! @brief Framebuffer bit depth hint. * * Framebuffer bit depth [hint](@ref GLFW_ACCUM_RED_BITS). */ #define GLFW_ACCUM_RED_BITS … /*! @brief Framebuffer bit depth hint. * * Framebuffer bit depth [hint](@ref GLFW_ACCUM_GREEN_BITS). */ #define GLFW_ACCUM_GREEN_BITS … /*! @brief Framebuffer bit depth hint. * * Framebuffer bit depth [hint](@ref GLFW_ACCUM_BLUE_BITS). */ #define GLFW_ACCUM_BLUE_BITS … /*! @brief Framebuffer bit depth hint. * * Framebuffer bit depth [hint](@ref GLFW_ACCUM_ALPHA_BITS). */ #define GLFW_ACCUM_ALPHA_BITS … /*! @brief Framebuffer auxiliary buffer hint. * * Framebuffer auxiliary buffer [hint](@ref GLFW_AUX_BUFFERS). */ #define GLFW_AUX_BUFFERS … /*! @brief OpenGL stereoscopic rendering hint. * * OpenGL stereoscopic rendering [hint](@ref GLFW_STEREO). */ #define GLFW_STEREO … /*! @brief Framebuffer MSAA samples hint. * * Framebuffer MSAA samples [hint](@ref GLFW_SAMPLES). */ #define GLFW_SAMPLES … /*! @brief Framebuffer sRGB hint. * * Framebuffer sRGB [hint](@ref GLFW_SRGB_CAPABLE). */ #define GLFW_SRGB_CAPABLE … /*! @brief Monitor refresh rate hint. * * Monitor refresh rate [hint](@ref GLFW_REFRESH_RATE). */ #define GLFW_REFRESH_RATE … /*! @brief Framebuffer double buffering hint and attribute. * * Framebuffer double buffering [hint](@ref GLFW_DOUBLEBUFFER_hint) and * [attribute](@ref GLFW_DOUBLEBUFFER_attrib). */ #define GLFW_DOUBLEBUFFER … /*! @brief Context client API hint and attribute. * * Context client API [hint](@ref GLFW_CLIENT_API_hint) and * [attribute](@ref GLFW_CLIENT_API_attrib). */ #define GLFW_CLIENT_API … /*! @brief Context client API major version hint and attribute. * * Context client API major version [hint](@ref GLFW_CONTEXT_VERSION_MAJOR_hint) * and [attribute](@ref GLFW_CONTEXT_VERSION_MAJOR_attrib). */ #define GLFW_CONTEXT_VERSION_MAJOR … /*! @brief Context client API minor version hint and attribute. * * Context client API minor version [hint](@ref GLFW_CONTEXT_VERSION_MINOR_hint) * and [attribute](@ref GLFW_CONTEXT_VERSION_MINOR_attrib). */ #define GLFW_CONTEXT_VERSION_MINOR … /*! @brief Context client API revision number attribute. * * Context client API revision number * [attribute](@ref GLFW_CONTEXT_REVISION_attrib). */ #define GLFW_CONTEXT_REVISION … /*! @brief Context robustness hint and attribute. * * Context client API revision number [hint](@ref GLFW_CONTEXT_ROBUSTNESS_hint) * and [attribute](@ref GLFW_CONTEXT_ROBUSTNESS_attrib). */ #define GLFW_CONTEXT_ROBUSTNESS … /*! @brief OpenGL forward-compatibility hint and attribute. * * OpenGL forward-compatibility [hint](@ref GLFW_OPENGL_FORWARD_COMPAT_hint) * and [attribute](@ref GLFW_OPENGL_FORWARD_COMPAT_attrib). */ #define GLFW_OPENGL_FORWARD_COMPAT … /*! @brief Debug mode context hint and attribute. * * Debug mode context [hint](@ref GLFW_CONTEXT_DEBUG_hint) and * [attribute](@ref GLFW_CONTEXT_DEBUG_attrib). */ #define GLFW_CONTEXT_DEBUG … /*! @brief Legacy name for compatibility. * * This is an alias for compatibility with earlier versions. */ #define GLFW_OPENGL_DEBUG_CONTEXT … /*! @brief OpenGL profile hint and attribute. * * OpenGL profile [hint](@ref GLFW_OPENGL_PROFILE_hint) and * [attribute](@ref GLFW_OPENGL_PROFILE_attrib). */ #define GLFW_OPENGL_PROFILE … /*! @brief Context flush-on-release hint and attribute. * * Context flush-on-release [hint](@ref GLFW_CONTEXT_RELEASE_BEHAVIOR_hint) and * [attribute](@ref GLFW_CONTEXT_RELEASE_BEHAVIOR_attrib). */ #define GLFW_CONTEXT_RELEASE_BEHAVIOR … /*! @brief Context error suppression hint and attribute. * * Context error suppression [hint](@ref GLFW_CONTEXT_NO_ERROR_hint) and * [attribute](@ref GLFW_CONTEXT_NO_ERROR_attrib). */ #define GLFW_CONTEXT_NO_ERROR … /*! @brief Context creation API hint and attribute. * * Context creation API [hint](@ref GLFW_CONTEXT_CREATION_API_hint) and * [attribute](@ref GLFW_CONTEXT_CREATION_API_attrib). */ #define GLFW_CONTEXT_CREATION_API … /*! @brief Window content area scaling window * [window hint](@ref GLFW_SCALE_TO_MONITOR). */ #define GLFW_SCALE_TO_MONITOR … /*! @brief Window framebuffer scaling * [window hint](@ref GLFW_SCALE_FRAMEBUFFER_hint). */ #define GLFW_SCALE_FRAMEBUFFER … /*! @brief Legacy name for compatibility. * * This is an alias for the * [GLFW_SCALE_FRAMEBUFFER](@ref GLFW_SCALE_FRAMEBUFFER_hint) window hint for * compatibility with earlier versions. */ #define GLFW_COCOA_RETINA_FRAMEBUFFER … /*! @brief macOS specific * [window hint](@ref GLFW_COCOA_FRAME_NAME_hint). */ #define GLFW_COCOA_FRAME_NAME … /*! @brief macOS specific * [window hint](@ref GLFW_COCOA_GRAPHICS_SWITCHING_hint). */ #define GLFW_COCOA_GRAPHICS_SWITCHING … /*! @brief X11 specific * [window hint](@ref GLFW_X11_CLASS_NAME_hint). */ #define GLFW_X11_CLASS_NAME … /*! @brief X11 specific * [window hint](@ref GLFW_X11_CLASS_NAME_hint). */ #define GLFW_X11_INSTANCE_NAME … #define GLFW_WIN32_KEYBOARD_MENU … /*! @brief Win32 specific [window hint](@ref GLFW_WIN32_SHOWDEFAULT_hint). */ #define GLFW_WIN32_SHOWDEFAULT … /*! @brief Wayland specific * [window hint](@ref GLFW_WAYLAND_APP_ID_hint). * * Allows specification of the Wayland app_id. */ #define GLFW_WAYLAND_APP_ID … /*! @} */ #define GLFW_NO_API … #define GLFW_OPENGL_API … #define GLFW_OPENGL_ES_API … #define GLFW_NO_ROBUSTNESS … #define GLFW_NO_RESET_NOTIFICATION … #define GLFW_LOSE_CONTEXT_ON_RESET … #define GLFW_OPENGL_ANY_PROFILE … #define GLFW_OPENGL_CORE_PROFILE … #define GLFW_OPENGL_COMPAT_PROFILE … #define GLFW_CURSOR … #define GLFW_STICKY_KEYS … #define GLFW_STICKY_MOUSE_BUTTONS … #define GLFW_LOCK_KEY_MODS … #define GLFW_RAW_MOUSE_MOTION … #define GLFW_UNLIMITED_MOUSE_BUTTONS … #define GLFW_CURSOR_NORMAL … #define GLFW_CURSOR_HIDDEN … #define GLFW_CURSOR_DISABLED … #define GLFW_CURSOR_CAPTURED … #define GLFW_ANY_RELEASE_BEHAVIOR … #define GLFW_RELEASE_BEHAVIOR_FLUSH … #define GLFW_RELEASE_BEHAVIOR_NONE … #define GLFW_NATIVE_CONTEXT_API … #define GLFW_EGL_CONTEXT_API … #define GLFW_OSMESA_CONTEXT_API … #define GLFW_ANGLE_PLATFORM_TYPE_NONE … #define GLFW_ANGLE_PLATFORM_TYPE_OPENGL … #define GLFW_ANGLE_PLATFORM_TYPE_OPENGLES … #define GLFW_ANGLE_PLATFORM_TYPE_D3D9 … #define GLFW_ANGLE_PLATFORM_TYPE_D3D11 … #define GLFW_ANGLE_PLATFORM_TYPE_VULKAN … #define GLFW_ANGLE_PLATFORM_TYPE_METAL … #define GLFW_WAYLAND_PREFER_LIBDECOR … #define GLFW_WAYLAND_DISABLE_LIBDECOR … #define GLFW_ANY_POSITION … /*! @defgroup shapes Standard cursor shapes * @brief Standard system cursor shapes. * * These are the [standard cursor shapes](@ref cursor_standard) that can be * requested from the platform (window system). * * @ingroup input * @{ */ /*! @brief The regular arrow cursor shape. * * The regular arrow cursor shape. */ #define GLFW_ARROW_CURSOR … /*! @brief The text input I-beam cursor shape. * * The text input I-beam cursor shape. */ #define GLFW_IBEAM_CURSOR … /*! @brief The crosshair cursor shape. * * The crosshair cursor shape. */ #define GLFW_CROSSHAIR_CURSOR … /*! @brief The pointing hand cursor shape. * * The pointing hand cursor shape. */ #define GLFW_POINTING_HAND_CURSOR … /*! @brief The horizontal resize/move arrow shape. * * The horizontal resize/move arrow shape. This is usually a horizontal * double-headed arrow. */ #define GLFW_RESIZE_EW_CURSOR … /*! @brief The vertical resize/move arrow shape. * * The vertical resize/move shape. This is usually a vertical double-headed * arrow. */ #define GLFW_RESIZE_NS_CURSOR … /*! @brief The top-left to bottom-right diagonal resize/move arrow shape. * * The top-left to bottom-right diagonal resize/move shape. This is usually * a diagonal double-headed arrow. * * @note @macos This shape is provided by a private system API and may fail * with @ref GLFW_CURSOR_UNAVAILABLE in the future. * * @note @wayland This shape is provided by a newer standard not supported by * all cursor themes. * * @note @x11 This shape is provided by a newer standard not supported by all * cursor themes. */ #define GLFW_RESIZE_NWSE_CURSOR … /*! @brief The top-right to bottom-left diagonal resize/move arrow shape. * * The top-right to bottom-left diagonal resize/move shape. This is usually * a diagonal double-headed arrow. * * @note @macos This shape is provided by a private system API and may fail * with @ref GLFW_CURSOR_UNAVAILABLE in the future. * * @note @wayland This shape is provided by a newer standard not supported by * all cursor themes. * * @note @x11 This shape is provided by a newer standard not supported by all * cursor themes. */ #define GLFW_RESIZE_NESW_CURSOR … /*! @brief The omni-directional resize/move cursor shape. * * The omni-directional resize cursor/move shape. This is usually either * a combined horizontal and vertical double-headed arrow or a grabbing hand. */ #define GLFW_RESIZE_ALL_CURSOR … /*! @brief The operation-not-allowed shape. * * The operation-not-allowed shape. This is usually a circle with a diagonal * line through it. * * @note @wayland This shape is provided by a newer standard not supported by * all cursor themes. * * @note @x11 This shape is provided by a newer standard not supported by all * cursor themes. */ #define GLFW_NOT_ALLOWED_CURSOR … /*! @brief Legacy name for compatibility. * * This is an alias for compatibility with earlier versions. */ #define GLFW_HRESIZE_CURSOR … /*! @brief Legacy name for compatibility. * * This is an alias for compatibility with earlier versions. */ #define GLFW_VRESIZE_CURSOR … /*! @brief Legacy name for compatibility. * * This is an alias for compatibility with earlier versions. */ #define GLFW_HAND_CURSOR … /*! @} */ #define GLFW_CONNECTED … #define GLFW_DISCONNECTED … /*! @addtogroup init * @{ */ /*! @brief Joystick hat buttons init hint. * * Joystick hat buttons [init hint](@ref GLFW_JOYSTICK_HAT_BUTTONS). */ #define GLFW_JOYSTICK_HAT_BUTTONS … /*! @brief ANGLE rendering backend init hint. * * ANGLE rendering backend [init hint](@ref GLFW_ANGLE_PLATFORM_TYPE_hint). */ #define GLFW_ANGLE_PLATFORM_TYPE … /*! @brief Platform selection init hint. * * Platform selection [init hint](@ref GLFW_PLATFORM). */ #define GLFW_PLATFORM … /*! @brief macOS specific init hint. * * macOS specific [init hint](@ref GLFW_COCOA_CHDIR_RESOURCES_hint). */ #define GLFW_COCOA_CHDIR_RESOURCES … /*! @brief macOS specific init hint. * * macOS specific [init hint](@ref GLFW_COCOA_MENUBAR_hint). */ #define GLFW_COCOA_MENUBAR … /*! @brief X11 specific init hint. * * X11 specific [init hint](@ref GLFW_X11_XCB_VULKAN_SURFACE_hint). */ #define GLFW_X11_XCB_VULKAN_SURFACE … /*! @brief Wayland specific init hint. * * Wayland specific [init hint](@ref GLFW_WAYLAND_LIBDECOR_hint). */ #define GLFW_WAYLAND_LIBDECOR … /*! @} */ /*! @addtogroup init * @{ */ /*! @brief Hint value that enables automatic platform selection. * * Hint value for @ref GLFW_PLATFORM that enables automatic platform selection. */ #define GLFW_ANY_PLATFORM … #define GLFW_PLATFORM_WIN32 … #define GLFW_PLATFORM_COCOA … #define GLFW_PLATFORM_WAYLAND … #define GLFW_PLATFORM_X11 … #define GLFW_PLATFORM_NULL … /*! @} */ #define GLFW_DONT_CARE … /************************************************************************* * GLFW API types *************************************************************************/ /*! @brief Client API function pointer type. * * Generic function pointer used for returning client API function pointers * without forcing a cast from a regular pointer. * * @sa @ref context_glext * @sa @ref glfwGetProcAddress * * @since Added in version 3.0. * * @ingroup context */ GLFWglproc; /*! @brief Vulkan API function pointer type. * * Generic function pointer used for returning Vulkan API function pointers * without forcing a cast from a regular pointer. * * @sa @ref vulkan_proc * @sa @ref glfwGetInstanceProcAddress * * @since Added in version 3.2. * * @ingroup vulkan */ GLFWvkproc; /*! @brief Opaque monitor object. * * Opaque monitor object. * * @see @ref monitor_object * * @since Added in version 3.0. * * @ingroup monitor */ GLFWmonitor; /*! @brief Opaque window object. * * Opaque window object. * * @see @ref window_object * * @since Added in version 3.0. * * @ingroup window */ GLFWwindow; /*! @brief Opaque cursor object. * * Opaque cursor object. * * @see @ref cursor_object * * @since Added in version 3.1. * * @ingroup input */ GLFWcursor; /*! @brief The function pointer type for memory allocation callbacks. * * This is the function pointer type for memory allocation callbacks. A memory * allocation callback function has the following signature: * @code * void* function_name(size_t size, void* user) * @endcode * * This function must return either a memory block at least `size` bytes long, * or `NULL` if allocation failed. Note that not all parts of GLFW handle allocation * failures gracefully yet. * * This function must support being called during @ref glfwInit but before the library is * flagged as initialized, as well as during @ref glfwTerminate after the library is no * longer flagged as initialized. * * Any memory allocated via this function will be deallocated via the same allocator * during library termination or earlier. * * Any memory allocated via this function must be suitably aligned for any object type. * If you are using C99 or earlier, this alignment is platform-dependent but will be the * same as what `malloc` provides. If you are using C11 or later, this is the value of * `alignof(max_align_t)`. * * The size will always be greater than zero. Allocations of size zero are filtered out * before reaching the custom allocator. * * If this function returns `NULL`, GLFW will emit @ref GLFW_OUT_OF_MEMORY. * * This function must not call any GLFW function. * * @param[in] size The minimum size, in bytes, of the memory block. * @param[in] user The user-defined pointer from the allocator. * @return The address of the newly allocated memory block, or `NULL` if an * error occurred. * * @pointer_lifetime The returned memory block must be valid at least until it * is deallocated. * * @reentrancy This function should not call any GLFW function. * * @thread_safety This function must support being called from any thread that calls GLFW * functions. * * @sa @ref init_allocator * @sa @ref GLFWallocator * * @since Added in version 3.4. * * @ingroup init */ GLFWallocatefun; /*! @brief The function pointer type for memory reallocation callbacks. * * This is the function pointer type for memory reallocation callbacks. * A memory reallocation callback function has the following signature: * @code * void* function_name(void* block, size_t size, void* user) * @endcode * * This function must return a memory block at least `size` bytes long, or * `NULL` if allocation failed. Note that not all parts of GLFW handle allocation * failures gracefully yet. * * This function must support being called during @ref glfwInit but before the library is * flagged as initialized, as well as during @ref glfwTerminate after the library is no * longer flagged as initialized. * * Any memory allocated via this function will be deallocated via the same allocator * during library termination or earlier. * * Any memory allocated via this function must be suitably aligned for any object type. * If you are using C99 or earlier, this alignment is platform-dependent but will be the * same as what `realloc` provides. If you are using C11 or later, this is the value of * `alignof(max_align_t)`. * * The block address will never be `NULL` and the size will always be greater than zero. * Reallocations of a block to size zero are converted into deallocations before reaching * the custom allocator. Reallocations of `NULL` to a non-zero size are converted into * regular allocations before reaching the custom allocator. * * If this function returns `NULL`, GLFW will emit @ref GLFW_OUT_OF_MEMORY. * * This function must not call any GLFW function. * * @param[in] block The address of the memory block to reallocate. * @param[in] size The new minimum size, in bytes, of the memory block. * @param[in] user The user-defined pointer from the allocator. * @return The address of the newly allocated or resized memory block, or * `NULL` if an error occurred. * * @pointer_lifetime The returned memory block must be valid at least until it * is deallocated. * * @reentrancy This function should not call any GLFW function. * * @thread_safety This function must support being called from any thread that calls GLFW * functions. * * @sa @ref init_allocator * @sa @ref GLFWallocator * * @since Added in version 3.4. * * @ingroup init */ GLFWreallocatefun; /*! @brief The function pointer type for memory deallocation callbacks. * * This is the function pointer type for memory deallocation callbacks. * A memory deallocation callback function has the following signature: * @code * void function_name(void* block, void* user) * @endcode * * This function may deallocate the specified memory block. This memory block * will have been allocated with the same allocator. * * This function must support being called during @ref glfwInit but before the library is * flagged as initialized, as well as during @ref glfwTerminate after the library is no * longer flagged as initialized. * * The block address will never be `NULL`. Deallocations of `NULL` are filtered out * before reaching the custom allocator. * * If this function returns `NULL`, GLFW will emit @ref GLFW_OUT_OF_MEMORY. * * This function must not call any GLFW function. * * @param[in] block The address of the memory block to deallocate. * @param[in] user The user-defined pointer from the allocator. * * @pointer_lifetime The specified memory block will not be accessed by GLFW * after this function is called. * * @reentrancy This function should not call any GLFW function. * * @thread_safety This function must support being called from any thread that calls GLFW * functions. * * @sa @ref init_allocator * @sa @ref GLFWallocator * * @since Added in version 3.4. * * @ingroup init */ GLFWdeallocatefun; /*! @brief The function pointer type for error callbacks. * * This is the function pointer type for error callbacks. An error callback * function has the following signature: * @code * void callback_name(int error_code, const char* description) * @endcode * * @param[in] error_code An [error code](@ref errors). Future releases may add * more error codes. * @param[in] description A UTF-8 encoded string describing the error. * * @pointer_lifetime The error description string is valid until the callback * function returns. * * @sa @ref error_handling * @sa @ref glfwSetErrorCallback * * @since Added in version 3.0. * * @ingroup init */ GLFWerrorfun; /*! @brief The function pointer type for window position callbacks. * * This is the function pointer type for window position callbacks. A window * position callback function has the following signature: * @code * void callback_name(GLFWwindow* window, int xpos, int ypos) * @endcode * * @param[in] window The window that was moved. * @param[in] xpos The new x-coordinate, in screen coordinates, of the * upper-left corner of the content area of the window. * @param[in] ypos The new y-coordinate, in screen coordinates, of the * upper-left corner of the content area of the window. * * @sa @ref window_pos * @sa @ref glfwSetWindowPosCallback * * @since Added in version 3.0. * * @ingroup window */ GLFWwindowposfun; /*! @brief The function pointer type for window size callbacks. * * This is the function pointer type for window size callbacks. A window size * callback function has the following signature: * @code * void callback_name(GLFWwindow* window, int width, int height) * @endcode * * @param[in] window The window that was resized. * @param[in] width The new width, in screen coordinates, of the window. * @param[in] height The new height, in screen coordinates, of the window. * * @sa @ref window_size * @sa @ref glfwSetWindowSizeCallback * * @since Added in version 1.0. * @glfw3 Added window handle parameter. * * @ingroup window */ GLFWwindowsizefun; /*! @brief The function pointer type for window close callbacks. * * This is the function pointer type for window close callbacks. A window * close callback function has the following signature: * @code * void function_name(GLFWwindow* window) * @endcode * * @param[in] window The window that the user attempted to close. * * @sa @ref window_close * @sa @ref glfwSetWindowCloseCallback * * @since Added in version 2.5. * @glfw3 Added window handle parameter. * * @ingroup window */ GLFWwindowclosefun; /*! @brief The function pointer type for window content refresh callbacks. * * This is the function pointer type for window content refresh callbacks. * A window content refresh callback function has the following signature: * @code * void function_name(GLFWwindow* window); * @endcode * * @param[in] window The window whose content needs to be refreshed. * * @sa @ref window_refresh * @sa @ref glfwSetWindowRefreshCallback * * @since Added in version 2.5. * @glfw3 Added window handle parameter. * * @ingroup window */ GLFWwindowrefreshfun; /*! @brief The function pointer type for window focus callbacks. * * This is the function pointer type for window focus callbacks. A window * focus callback function has the following signature: * @code * void function_name(GLFWwindow* window, int focused) * @endcode * * @param[in] window The window that gained or lost input focus. * @param[in] focused `GLFW_TRUE` if the window was given input focus, or * `GLFW_FALSE` if it lost it. * * @sa @ref window_focus * @sa @ref glfwSetWindowFocusCallback * * @since Added in version 3.0. * * @ingroup window */ GLFWwindowfocusfun; /*! @brief The function pointer type for window iconify callbacks. * * This is the function pointer type for window iconify callbacks. A window * iconify callback function has the following signature: * @code * void function_name(GLFWwindow* window, int iconified) * @endcode * * @param[in] window The window that was iconified or restored. * @param[in] iconified `GLFW_TRUE` if the window was iconified, or * `GLFW_FALSE` if it was restored. * * @sa @ref window_iconify * @sa @ref glfwSetWindowIconifyCallback * * @since Added in version 3.0. * * @ingroup window */ GLFWwindowiconifyfun; /*! @brief The function pointer type for window maximize callbacks. * * This is the function pointer type for window maximize callbacks. A window * maximize callback function has the following signature: * @code * void function_name(GLFWwindow* window, int maximized) * @endcode * * @param[in] window The window that was maximized or restored. * @param[in] maximized `GLFW_TRUE` if the window was maximized, or * `GLFW_FALSE` if it was restored. * * @sa @ref window_maximize * @sa glfwSetWindowMaximizeCallback * * @since Added in version 3.3. * * @ingroup window */ GLFWwindowmaximizefun; /*! @brief The function pointer type for framebuffer size callbacks. * * This is the function pointer type for framebuffer size callbacks. * A framebuffer size callback function has the following signature: * @code * void function_name(GLFWwindow* window, int width, int height) * @endcode * * @param[in] window The window whose framebuffer was resized. * @param[in] width The new width, in pixels, of the framebuffer. * @param[in] height The new height, in pixels, of the framebuffer. * * @sa @ref window_fbsize * @sa @ref glfwSetFramebufferSizeCallback * * @since Added in version 3.0. * * @ingroup window */ GLFWframebuffersizefun; /*! @brief The function pointer type for window content scale callbacks. * * This is the function pointer type for window content scale callbacks. * A window content scale callback function has the following signature: * @code * void function_name(GLFWwindow* window, float xscale, float yscale) * @endcode * * @param[in] window The window whose content scale changed. * @param[in] xscale The new x-axis content scale of the window. * @param[in] yscale The new y-axis content scale of the window. * * @sa @ref window_scale * @sa @ref glfwSetWindowContentScaleCallback * * @since Added in version 3.3. * * @ingroup window */ GLFWwindowcontentscalefun; /*! @brief The function pointer type for mouse button callbacks. * * This is the function pointer type for mouse button callback functions. * A mouse button callback function has the following signature: * @code * void function_name(GLFWwindow* window, int button, int action, int mods) * @endcode * * @param[in] window The window that received the event. * @param[in] button The [mouse button](@ref buttons) that was pressed or * released. * @param[in] action One of `GLFW_PRESS` or `GLFW_RELEASE`. Future releases * may add more actions. * @param[in] mods Bit field describing which [modifier keys](@ref mods) were * held down. * * @sa @ref input_mouse_button * @sa @ref glfwSetMouseButtonCallback * * @since Added in version 1.0. * @glfw3 Added window handle and modifier mask parameters. * * @ingroup input */ GLFWmousebuttonfun; /*! @brief The function pointer type for cursor position callbacks. * * This is the function pointer type for cursor position callbacks. A cursor * position callback function has the following signature: * @code * void function_name(GLFWwindow* window, double xpos, double ypos); * @endcode * * @param[in] window The window that received the event. * @param[in] xpos The new cursor x-coordinate, relative to the left edge of * the content area. * @param[in] ypos The new cursor y-coordinate, relative to the top edge of the * content area. * * @sa @ref cursor_pos * @sa @ref glfwSetCursorPosCallback * * @since Added in version 3.0. Replaces `GLFWmouseposfun`. * * @ingroup input */ GLFWcursorposfun; /*! @brief The function pointer type for cursor enter/leave callbacks. * * This is the function pointer type for cursor enter/leave callbacks. * A cursor enter/leave callback function has the following signature: * @code * void function_name(GLFWwindow* window, int entered) * @endcode * * @param[in] window The window that received the event. * @param[in] entered `GLFW_TRUE` if the cursor entered the window's content * area, or `GLFW_FALSE` if it left it. * * @sa @ref cursor_enter * @sa @ref glfwSetCursorEnterCallback * * @since Added in version 3.0. * * @ingroup input */ GLFWcursorenterfun; /*! @brief The function pointer type for scroll callbacks. * * This is the function pointer type for scroll callbacks. A scroll callback * function has the following signature: * @code * void function_name(GLFWwindow* window, double xoffset, double yoffset) * @endcode * * @param[in] window The window that received the event. * @param[in] xoffset The scroll offset along the x-axis. * @param[in] yoffset The scroll offset along the y-axis. * * @sa @ref scrolling * @sa @ref glfwSetScrollCallback * * @since Added in version 3.0. Replaces `GLFWmousewheelfun`. * * @ingroup input */ GLFWscrollfun; /*! @brief The function pointer type for keyboard key callbacks. * * This is the function pointer type for keyboard key callbacks. A keyboard * key callback function has the following signature: * @code * void function_name(GLFWwindow* window, int key, int scancode, int action, int mods) * @endcode * * @param[in] window The window that received the event. * @param[in] key The [keyboard key](@ref keys) that was pressed or released. * @param[in] scancode The platform-specific scancode of the key. * @param[in] action `GLFW_PRESS`, `GLFW_RELEASE` or `GLFW_REPEAT`. Future * releases may add more actions. * @param[in] mods Bit field describing which [modifier keys](@ref mods) were * held down. * * @sa @ref input_key * @sa @ref glfwSetKeyCallback * * @since Added in version 1.0. * @glfw3 Added window handle, scancode and modifier mask parameters. * * @ingroup input */ GLFWkeyfun; /*! @brief The function pointer type for Unicode character callbacks. * * This is the function pointer type for Unicode character callbacks. * A Unicode character callback function has the following signature: * @code * void function_name(GLFWwindow* window, unsigned int codepoint) * @endcode * * @param[in] window The window that received the event. * @param[in] codepoint The Unicode code point of the character. * * @sa @ref input_char * @sa @ref glfwSetCharCallback * * @since Added in version 2.4. * @glfw3 Added window handle parameter. * * @ingroup input */ GLFWcharfun; /*! @brief The function pointer type for Unicode character with modifiers * callbacks. * * This is the function pointer type for Unicode character with modifiers * callbacks. It is called for each input character, regardless of what * modifier keys are held down. A Unicode character with modifiers callback * function has the following signature: * @code * void function_name(GLFWwindow* window, unsigned int codepoint, int mods) * @endcode * * @param[in] window The window that received the event. * @param[in] codepoint The Unicode code point of the character. * @param[in] mods Bit field describing which [modifier keys](@ref mods) were * held down. * * @sa @ref input_char * @sa @ref glfwSetCharModsCallback * * @deprecated Scheduled for removal in version 4.0. * * @since Added in version 3.1. * * @ingroup input */ GLFWcharmodsfun; /*! @brief The function pointer type for path drop callbacks. * * This is the function pointer type for path drop callbacks. A path drop * callback function has the following signature: * @code * void function_name(GLFWwindow* window, int path_count, const char* paths[]) * @endcode * * @param[in] window The window that received the event. * @param[in] path_count The number of dropped paths. * @param[in] paths The UTF-8 encoded file and/or directory path names. * * @pointer_lifetime The path array and its strings are valid until the * callback function returns. * * @sa @ref path_drop * @sa @ref glfwSetDropCallback * * @since Added in version 3.1. * * @ingroup input */ GLFWdropfun; /*! @brief The function pointer type for monitor configuration callbacks. * * This is the function pointer type for monitor configuration callbacks. * A monitor callback function has the following signature: * @code * void function_name(GLFWmonitor* monitor, int event) * @endcode * * @param[in] monitor The monitor that was connected or disconnected. * @param[in] event One of `GLFW_CONNECTED` or `GLFW_DISCONNECTED`. Future * releases may add more events. * * @sa @ref monitor_event * @sa @ref glfwSetMonitorCallback * * @since Added in version 3.0. * * @ingroup monitor */ GLFWmonitorfun; /*! @brief The function pointer type for joystick configuration callbacks. * * This is the function pointer type for joystick configuration callbacks. * A joystick configuration callback function has the following signature: * @code * void function_name(int jid, int event) * @endcode * * @param[in] jid The joystick that was connected or disconnected. * @param[in] event One of `GLFW_CONNECTED` or `GLFW_DISCONNECTED`. Future * releases may add more events. * * @sa @ref joystick_event * @sa @ref glfwSetJoystickCallback * * @since Added in version 3.2. * * @ingroup input */ GLFWjoystickfun; /*! @brief Video mode type. * * This describes a single video mode. * * @sa @ref monitor_modes * @sa @ref glfwGetVideoMode * @sa @ref glfwGetVideoModes * * @since Added in version 1.0. * @glfw3 Added refresh rate member. * * @ingroup monitor */ GLFWvidmode; /*! @brief Gamma ramp. * * This describes the gamma ramp for a monitor. * * @sa @ref monitor_gamma * @sa @ref glfwGetGammaRamp * @sa @ref glfwSetGammaRamp * * @since Added in version 3.0. * * @ingroup monitor */ GLFWgammaramp; /*! @brief Image data. * * This describes a single 2D image. See the documentation for each related * function what the expected pixel format is. * * @sa @ref cursor_custom * @sa @ref window_icon * * @since Added in version 2.1. * @glfw3 Removed format and bytes-per-pixel members. * * @ingroup window */ GLFWimage; /*! @brief Gamepad input state * * This describes the input state of a gamepad. * * @sa @ref gamepad * @sa @ref glfwGetGamepadState * * @since Added in version 3.3. * * @ingroup input */ GLFWgamepadstate; /*! @brief Custom heap memory allocator. * * This describes a custom heap memory allocator for GLFW. To set an allocator, pass it * to @ref glfwInitAllocator before initializing the library. * * @sa @ref init_allocator * @sa @ref glfwInitAllocator * * @since Added in version 3.4. * * @ingroup init */ GLFWallocator; /************************************************************************* * GLFW API functions *************************************************************************/ /*! @brief Initializes the GLFW library. * * This function initializes the GLFW library. Before most GLFW functions can * be used, GLFW must be initialized, and before an application terminates GLFW * should be terminated in order to free any resources allocated during or * after initialization. * * If this function fails, it calls @ref glfwTerminate before returning. If it * succeeds, you should call @ref glfwTerminate before the application exits. * * Additional calls to this function after successful initialization but before * termination will return `GLFW_TRUE` immediately. * * The @ref GLFW_PLATFORM init hint controls which platforms are considered during * initialization. This also depends on which platforms the library was compiled to * support. * * @return `GLFW_TRUE` if successful, or `GLFW_FALSE` if an * [error](@ref error_handling) occurred. * * @errors Possible errors include @ref GLFW_PLATFORM_UNAVAILABLE and @ref * GLFW_PLATFORM_ERROR. * * @remark @macos This function will change the current directory of the * application to the `Contents/Resources` subdirectory of the application's * bundle, if present. This can be disabled with the @ref * GLFW_COCOA_CHDIR_RESOURCES init hint. * * @remark @macos This function will create the main menu and dock icon for the * application. If GLFW finds a `MainMenu.nib` it is loaded and assumed to * contain a menu bar. Otherwise a minimal menu bar is created manually with * common commands like Hide, Quit and About. The About entry opens a minimal * about dialog with information from the application's bundle. The menu bar * and dock icon can be disabled entirely with the @ref GLFW_COCOA_MENUBAR init * hint. * * @remark __Wayland, X11:__ If the library was compiled with support for both * Wayland and X11, and the @ref GLFW_PLATFORM init hint is set to * `GLFW_ANY_PLATFORM`, the `XDG_SESSION_TYPE` environment variable affects * which platform is picked. If the environment variable is not set, or is set * to something other than `wayland` or `x11`, the regular detection mechanism * will be used instead. * * @remark @x11 This function will set the `LC_CTYPE` category of the * application locale according to the current environment if that category is * still "C". This is because the "C" locale breaks Unicode text input. * * @thread_safety This function must only be called from the main thread. * * @sa @ref intro_init * @sa @ref glfwInitHint * @sa @ref glfwInitAllocator * @sa @ref glfwTerminate * * @since Added in version 1.0. * * @ingroup init */ GLFWAPI int glfwInit(void); /*! @brief Terminates the GLFW library. * * This function destroys all remaining windows and cursors, restores any * modified gamma ramps and frees any other allocated resources. Once this * function is called, you must again call @ref glfwInit successfully before * you will be able to use most GLFW functions. * * If GLFW has been successfully initialized, this function should be called * before the application exits. If initialization fails, there is no need to * call this function, as it is called by @ref glfwInit before it returns * failure. * * This function has no effect if GLFW is not initialized. * * @errors Possible errors include @ref GLFW_PLATFORM_ERROR. * * @remark This function may be called before @ref glfwInit. * * @warning The contexts of any remaining windows must not be current on any * other thread when this function is called. * * @reentrancy This function must not be called from a callback. * * @thread_safety This function must only be called from the main thread. * * @sa @ref intro_init * @sa @ref glfwInit * * @since Added in version 1.0. * * @ingroup init */ GLFWAPI void glfwTerminate(void); /*! @brief Sets the specified init hint to the desired value. * * This function sets hints for the next initialization of GLFW. * * The values you set hints to are never reset by GLFW, but they only take * effect during initialization. Once GLFW has been initialized, any values * you set will be ignored until the library is terminated and initialized * again. * * Some hints are platform specific. These may be set on any platform but they * will only affect their specific platform. Other platforms will ignore them. * Setting these hints requires no platform specific headers or functions. * * @param[in] hint The [init hint](@ref init_hints) to set. * @param[in] value The new value of the init hint. * * @errors Possible errors include @ref GLFW_INVALID_ENUM and @ref * GLFW_INVALID_VALUE. * * @remarks This function may be called before @ref glfwInit. * * @thread_safety This function must only be called from the main thread. * * @sa init_hints * @sa glfwInit * * @since Added in version 3.3. * * @ingroup init */ GLFWAPI void glfwInitHint(int hint, int value); /*! @brief Sets the init allocator to the desired value. * * To use the default allocator, call this function with a `NULL` argument. * * If you specify an allocator struct, every member must be a valid function * pointer. If any member is `NULL`, this function will emit @ref * GLFW_INVALID_VALUE and the init allocator will be unchanged. * * The functions in the allocator must fulfil a number of requirements. See the * documentation for @ref GLFWallocatefun, @ref GLFWreallocatefun and @ref * GLFWdeallocatefun for details. * * @param[in] allocator The allocator to use at the next initialization, or * `NULL` to use the default one. * * @errors Possible errors include @ref GLFW_INVALID_VALUE. * * @pointer_lifetime The specified allocator is copied before this function * returns. * * @thread_safety This function must only be called from the main thread. * * @sa @ref init_allocator * @sa @ref glfwInit * * @since Added in version 3.4. * * @ingroup init */ GLFWAPI void glfwInitAllocator(const GLFWallocator* allocator); #if defined(VK_VERSION_1_0) /*! @brief Sets the desired Vulkan `vkGetInstanceProcAddr` function. * * This function sets the `vkGetInstanceProcAddr` function that GLFW will use for all * Vulkan related entry point queries. * * This feature is mostly useful on macOS, if your copy of the Vulkan loader is in * a location where GLFW cannot find it through dynamic loading, or if you are still * using the static library version of the loader. * * If set to `NULL`, GLFW will try to load the Vulkan loader dynamically by its standard * name and get this function from there. This is the default behavior. * * The standard name of the loader is `vulkan-1.dll` on Windows, `libvulkan.so.1` on * Linux and other Unix-like systems and `libvulkan.1.dylib` on macOS. If your code is * also loading it via these names then you probably don't need to use this function. * * The function address you set is never reset by GLFW, but it only takes effect during * initialization. Once GLFW has been initialized, any updates will be ignored until the * library is terminated and initialized again. * * @param[in] loader The address of the function to use, or `NULL`. * * @par Loader function signature * @code * PFN_vkVoidFunction vkGetInstanceProcAddr(VkInstance instance, const char* name) * @endcode * For more information about this function, see the * [Vulkan Registry](https://www.khronos.org/registry/vulkan/). * * @errors None. * * @remark This function may be called before @ref glfwInit. * * @thread_safety This function must only be called from the main thread. * * @sa @ref vulkan_loader * @sa @ref glfwInit * * @since Added in version 3.4. * * @ingroup init */ GLFWAPI void glfwInitVulkanLoader(PFN_vkGetInstanceProcAddr loader); #endif /*VK_VERSION_1_0*/ /*! @brief Retrieves the version of the GLFW library. * * This function retrieves the major, minor and revision numbers of the GLFW * library. It is intended for when you are using GLFW as a shared library and * want to ensure that you are using the minimum required version. * * Any or all of the version arguments may be `NULL`. * * @param[out] major Where to store the major version number, or `NULL`. * @param[out] minor Where to store the minor version number, or `NULL`. * @param[out] rev Where to store the revision number, or `NULL`. * * @errors None. * * @remark This function may be called before @ref glfwInit. * * @thread_safety This function may be called from any thread. * * @sa @ref intro_version * @sa @ref glfwGetVersionString * * @since Added in version 1.0. * * @ingroup init */ GLFWAPI void glfwGetVersion(int* major, int* minor, int* rev); /*! @brief Returns a string describing the compile-time configuration. * * This function returns the compile-time generated * [version string](@ref intro_version_string) of the GLFW library binary. It describes * the version, platforms, compiler and any platform or operating system specific * compile-time options. It should not be confused with the OpenGL or OpenGL ES version * string, queried with `glGetString`. * * __Do not use the version string__ to parse the GLFW library version. The * @ref glfwGetVersion function provides the version of the running library * binary in numerical format. * * __Do not use the version string__ to parse what platforms are supported. The @ref * glfwPlatformSupported function lets you query platform support. * * @return The ASCII encoded GLFW version string. * * @errors None. * * @remark This function may be called before @ref glfwInit. * * @pointer_lifetime The returned string is static and compile-time generated. * * @thread_safety This function may be called from any thread. * * @sa @ref intro_version * @sa @ref glfwGetVersion * * @since Added in version 3.0. * * @ingroup init */ GLFWAPI const char* glfwGetVersionString(void); /*! @brief Returns and clears the last error for the calling thread. * * This function returns and clears the [error code](@ref errors) of the last * error that occurred on the calling thread, and optionally a UTF-8 encoded * human-readable description of it. If no error has occurred since the last * call, it returns @ref GLFW_NO_ERROR (zero) and the description pointer is * set to `NULL`. * * @param[in] description Where to store the error description pointer, or `NULL`. * @return The last error code for the calling thread, or @ref GLFW_NO_ERROR * (zero). * * @errors None. * * @pointer_lifetime The returned string is allocated and freed by GLFW. You * should not free it yourself. It is guaranteed to be valid only until the * next error occurs or the library is terminated. * * @remark This function may be called before @ref glfwInit. * * @thread_safety This function may be called from any thread. * * @sa @ref error_handling * @sa @ref glfwSetErrorCallback * * @since Added in version 3.3. * * @ingroup init */ GLFWAPI int glfwGetError(const char** description); /*! @brief Sets the error callback. * * This function sets the error callback, which is called with an error code * and a human-readable description each time a GLFW error occurs. * * The error code is set before the callback is called. Calling @ref * glfwGetError from the error callback will return the same value as the error * code argument. * * The error callback is called on the thread where the error occurred. If you * are using GLFW from multiple threads, your error callback needs to be * written accordingly. * * Because the description string may have been generated specifically for that * error, it is not guaranteed to be valid after the callback has returned. If * you wish to use it after the callback returns, you need to make a copy. * * Once set, the error callback remains set even after the library has been * terminated. * * @param[in] callback The new callback, or `NULL` to remove the currently set * callback. * @return The previously set callback, or `NULL` if no callback was set. * * @callback_signature * @code * void callback_name(int error_code, const char* description) * @endcode * For more information about the callback parameters, see the * [callback pointer type](@ref GLFWerrorfun). * * @errors None. * * @remark This function may be called before @ref glfwInit. * * @thread_safety This function must only be called from the main thread. * * @sa @ref error_handling * @sa @ref glfwGetError * * @since Added in version 3.0. * * @ingroup init */ GLFWAPI GLFWerrorfun glfwSetErrorCallback(GLFWerrorfun callback); /*! @brief Returns the currently selected platform. * * This function returns the platform that was selected during initialization. The * returned value will be one of `GLFW_PLATFORM_WIN32`, `GLFW_PLATFORM_COCOA`, * `GLFW_PLATFORM_WAYLAND`, `GLFW_PLATFORM_X11` or `GLFW_PLATFORM_NULL`. * * @return The currently selected platform, or zero if an error occurred. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function may be called from any thread. * * @sa @ref platform * @sa @ref glfwPlatformSupported * * @since Added in version 3.4. * * @ingroup init */ GLFWAPI int glfwGetPlatform(void); /*! @brief Returns whether the library includes support for the specified platform. * * This function returns whether the library was compiled with support for the specified * platform. The platform must be one of `GLFW_PLATFORM_WIN32`, `GLFW_PLATFORM_COCOA`, * `GLFW_PLATFORM_WAYLAND`, `GLFW_PLATFORM_X11` or `GLFW_PLATFORM_NULL`. * * @param[in] platform The platform to query. * @return `GLFW_TRUE` if the platform is supported, or `GLFW_FALSE` otherwise. * * @errors Possible errors include @ref GLFW_INVALID_ENUM. * * @remark This function may be called before @ref glfwInit. * * @thread_safety This function may be called from any thread. * * @sa @ref platform * @sa @ref glfwGetPlatform * * @since Added in version 3.4. * * @ingroup init */ GLFWAPI int glfwPlatformSupported(int platform); /*! @brief Returns the currently connected monitors. * * This function returns an array of handles for all currently connected * monitors. The primary monitor is always first in the returned array. If no * monitors were found, this function returns `NULL`. * * @param[out] count Where to store the number of monitors in the returned * array. This is set to zero if an error occurred. * @return An array of monitor handles, or `NULL` if no monitors were found or * if an [error](@ref error_handling) occurred. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @pointer_lifetime The returned array is allocated and freed by GLFW. You * should not free it yourself. It is guaranteed to be valid only until the * monitor configuration changes or the library is terminated. * * @thread_safety This function must only be called from the main thread. * * @sa @ref monitor_monitors * @sa @ref monitor_event * @sa @ref glfwGetPrimaryMonitor * * @since Added in version 3.0. * * @ingroup monitor */ GLFWAPI GLFWmonitor** glfwGetMonitors(int* count); /*! @brief Returns the primary monitor. * * This function returns the primary monitor. This is usually the monitor * where elements like the task bar or global menu bar are located. * * @return The primary monitor, or `NULL` if no monitors were found or if an * [error](@ref error_handling) occurred. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function must only be called from the main thread. * * @remark The primary monitor is always first in the array returned by @ref * glfwGetMonitors. * * @sa @ref monitor_monitors * @sa @ref glfwGetMonitors * * @since Added in version 3.0. * * @ingroup monitor */ GLFWAPI GLFWmonitor* glfwGetPrimaryMonitor(void); /*! @brief Returns the position of the monitor's viewport on the virtual screen. * * This function returns the position, in screen coordinates, of the upper-left * corner of the specified monitor. * * Any or all of the position arguments may be `NULL`. If an error occurs, all * non-`NULL` position arguments will be set to zero. * * @param[in] monitor The monitor to query. * @param[out] xpos Where to store the monitor x-coordinate, or `NULL`. * @param[out] ypos Where to store the monitor y-coordinate, or `NULL`. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_PLATFORM_ERROR. * * @thread_safety This function must only be called from the main thread. * * @sa @ref monitor_properties * * @since Added in version 3.0. * * @ingroup monitor */ GLFWAPI void glfwGetMonitorPos(GLFWmonitor* monitor, int* xpos, int* ypos); /*! @brief Retrieves the work area of the monitor. * * This function returns the position, in screen coordinates, of the upper-left * corner of the work area of the specified monitor along with the work area * size in screen coordinates. The work area is defined as the area of the * monitor not occluded by the window system task bar where present. If no * task bar exists then the work area is the monitor resolution in screen * coordinates. * * Any or all of the position and size arguments may be `NULL`. If an error * occurs, all non-`NULL` position and size arguments will be set to zero. * * @param[in] monitor The monitor to query. * @param[out] xpos Where to store the monitor x-coordinate, or `NULL`. * @param[out] ypos Where to store the monitor y-coordinate, or `NULL`. * @param[out] width Where to store the monitor width, or `NULL`. * @param[out] height Where to store the monitor height, or `NULL`. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_PLATFORM_ERROR. * * @thread_safety This function must only be called from the main thread. * * @sa @ref monitor_workarea * * @since Added in version 3.3. * * @ingroup monitor */ GLFWAPI void glfwGetMonitorWorkarea(GLFWmonitor* monitor, int* xpos, int* ypos, int* width, int* height); /*! @brief Returns the physical size of the monitor. * * This function returns the size, in millimetres, of the display area of the * specified monitor. * * Some platforms do not provide accurate monitor size information, either * because the monitor [EDID][] data is incorrect or because the driver does * not report it accurately. * * [EDID]: https://en.wikipedia.org/wiki/Extended_display_identification_data * * Any or all of the size arguments may be `NULL`. If an error occurs, all * non-`NULL` size arguments will be set to zero. * * @param[in] monitor The monitor to query. * @param[out] widthMM Where to store the width, in millimetres, of the * monitor's display area, or `NULL`. * @param[out] heightMM Where to store the height, in millimetres, of the * monitor's display area, or `NULL`. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @remark @win32 On Windows 8 and earlier the physical size is calculated from * the current resolution and system DPI instead of querying the monitor EDID data. * * @thread_safety This function must only be called from the main thread. * * @sa @ref monitor_properties * * @since Added in version 3.0. * * @ingroup monitor */ GLFWAPI void glfwGetMonitorPhysicalSize(GLFWmonitor* monitor, int* widthMM, int* heightMM); /*! @brief Retrieves the content scale for the specified monitor. * * This function retrieves the content scale for the specified monitor. The * content scale is the ratio between the current DPI and the platform's * default DPI. This is especially important for text and any UI elements. If * the pixel dimensions of your UI scaled by this look appropriate on your * machine then it should appear at a reasonable size on other machines * regardless of their DPI and scaling settings. This relies on the system DPI * and scaling settings being somewhat correct. * * The content scale may depend on both the monitor resolution and pixel * density and on user settings. It may be very different from the raw DPI * calculated from the physical size and current resolution. * * @param[in] monitor The monitor to query. * @param[out] xscale Where to store the x-axis content scale, or `NULL`. * @param[out] yscale Where to store the y-axis content scale, or `NULL`. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_PLATFORM_ERROR. * * @remark @wayland Fractional scaling information is not yet available for * monitors, so this function only returns integer content scales. * * @thread_safety This function must only be called from the main thread. * * @sa @ref monitor_scale * @sa @ref glfwGetWindowContentScale * * @since Added in version 3.3. * * @ingroup monitor */ GLFWAPI void glfwGetMonitorContentScale(GLFWmonitor* monitor, float* xscale, float* yscale); /*! @brief Returns the name of the specified monitor. * * This function returns a human-readable name, encoded as UTF-8, of the * specified monitor. The name typically reflects the make and model of the * monitor and is not guaranteed to be unique among the connected monitors. * * @param[in] monitor The monitor to query. * @return The UTF-8 encoded name of the monitor, or `NULL` if an * [error](@ref error_handling) occurred. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @pointer_lifetime The returned string is allocated and freed by GLFW. You * should not free it yourself. It is valid until the specified monitor is * disconnected or the library is terminated. * * @thread_safety This function must only be called from the main thread. * * @sa @ref monitor_properties * * @since Added in version 3.0. * * @ingroup monitor */ GLFWAPI const char* glfwGetMonitorName(GLFWmonitor* monitor); /*! @brief Sets the user pointer of the specified monitor. * * This function sets the user-defined pointer of the specified monitor. The * current value is retained until the monitor is disconnected. The initial * value is `NULL`. * * This function may be called from the monitor callback, even for a monitor * that is being disconnected. * * @param[in] monitor The monitor whose pointer to set. * @param[in] pointer The new value. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function may be called from any thread. Access is not * synchronized. * * @sa @ref monitor_userptr * @sa @ref glfwGetMonitorUserPointer * * @since Added in version 3.3. * * @ingroup monitor */ GLFWAPI void glfwSetMonitorUserPointer(GLFWmonitor* monitor, void* pointer); /*! @brief Returns the user pointer of the specified monitor. * * This function returns the current value of the user-defined pointer of the * specified monitor. The initial value is `NULL`. * * This function may be called from the monitor callback, even for a monitor * that is being disconnected. * * @param[in] monitor The monitor whose pointer to return. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function may be called from any thread. Access is not * synchronized. * * @sa @ref monitor_userptr * @sa @ref glfwSetMonitorUserPointer * * @since Added in version 3.3. * * @ingroup monitor */ GLFWAPI void* glfwGetMonitorUserPointer(GLFWmonitor* monitor); /*! @brief Sets the monitor configuration callback. * * This function sets the monitor configuration callback, or removes the * currently set callback. This is called when a monitor is connected to or * disconnected from the system. * * @param[in] callback The new callback, or `NULL` to remove the currently set * callback. * @return The previously set callback, or `NULL` if no callback was set or the * library had not been [initialized](@ref intro_init). * * @callback_signature * @code * void function_name(GLFWmonitor* monitor, int event) * @endcode * For more information about the callback parameters, see the * [function pointer type](@ref GLFWmonitorfun). * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function must only be called from the main thread. * * @sa @ref monitor_event * * @since Added in version 3.0. * * @ingroup monitor */ GLFWAPI GLFWmonitorfun glfwSetMonitorCallback(GLFWmonitorfun callback); /*! @brief Returns the available video modes for the specified monitor. * * This function returns an array of all video modes supported by the specified * monitor. The returned array is sorted in ascending order, first by color * bit depth (the sum of all channel depths), then by resolution area (the * product of width and height), then resolution width and finally by refresh * rate. * * @param[in] monitor The monitor to query. * @param[out] count Where to store the number of video modes in the returned * array. This is set to zero if an error occurred. * @return An array of video modes, or `NULL` if an * [error](@ref error_handling) occurred. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_PLATFORM_ERROR. * * @pointer_lifetime The returned array is allocated and freed by GLFW. You * should not free it yourself. It is valid until the specified monitor is * disconnected, this function is called again for that monitor or the library * is terminated. * * @thread_safety This function must only be called from the main thread. * * @sa @ref monitor_modes * @sa @ref glfwGetVideoMode * * @since Added in version 1.0. * @glfw3 Changed to return an array of modes for a specific monitor. * * @ingroup monitor */ GLFWAPI const GLFWvidmode* glfwGetVideoModes(GLFWmonitor* monitor, int* count); /*! @brief Returns the current mode of the specified monitor. * * This function returns the current video mode of the specified monitor. If * you have created a full screen window for that monitor, the return value * will depend on whether that window is iconified. * * @param[in] monitor The monitor to query. * @return The current mode of the monitor, or `NULL` if an * [error](@ref error_handling) occurred. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_PLATFORM_ERROR. * * @pointer_lifetime The returned array is allocated and freed by GLFW. You * should not free it yourself. It is valid until the specified monitor is * disconnected or the library is terminated. * * @thread_safety This function must only be called from the main thread. * * @sa @ref monitor_modes * @sa @ref glfwGetVideoModes * * @since Added in version 3.0. Replaces `glfwGetDesktopMode`. * * @ingroup monitor */ GLFWAPI const GLFWvidmode* glfwGetVideoMode(GLFWmonitor* monitor); /*! @brief Generates a gamma ramp and sets it for the specified monitor. * * This function generates an appropriately sized gamma ramp from the specified * exponent and then calls @ref glfwSetGammaRamp with it. The value must be * a finite number greater than zero. * * The software controlled gamma ramp is applied _in addition_ to the hardware * gamma correction, which today is usually an approximation of sRGB gamma. * This means that setting a perfectly linear ramp, or gamma 1.0, will produce * the default (usually sRGB-like) behavior. * * For gamma correct rendering with OpenGL or OpenGL ES, see the @ref * GLFW_SRGB_CAPABLE hint. * * @param[in] monitor The monitor whose gamma ramp to set. * @param[in] gamma The desired exponent. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref GLFW_INVALID_VALUE, * @ref GLFW_PLATFORM_ERROR and @ref GLFW_FEATURE_UNAVAILABLE (see remarks). * * @remark @wayland Gamma handling is a privileged protocol, this function * will thus never be implemented and emits @ref GLFW_FEATURE_UNAVAILABLE. * * @thread_safety This function must only be called from the main thread. * * @sa @ref monitor_gamma * * @since Added in version 3.0. * * @ingroup monitor */ GLFWAPI void glfwSetGamma(GLFWmonitor* monitor, float gamma); /*! @brief Returns the current gamma ramp for the specified monitor. * * This function returns the current gamma ramp of the specified monitor. * * @param[in] monitor The monitor to query. * @return The current gamma ramp, or `NULL` if an * [error](@ref error_handling) occurred. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref GLFW_PLATFORM_ERROR * and @ref GLFW_FEATURE_UNAVAILABLE (see remarks). * * @remark @wayland Gamma handling is a privileged protocol, this function * will thus never be implemented and emits @ref GLFW_FEATURE_UNAVAILABLE while * returning `NULL`. * * @pointer_lifetime The returned structure and its arrays are allocated and * freed by GLFW. You should not free them yourself. They are valid until the * specified monitor is disconnected, this function is called again for that * monitor or the library is terminated. * * @thread_safety This function must only be called from the main thread. * * @sa @ref monitor_gamma * * @since Added in version 3.0. * * @ingroup monitor */ GLFWAPI const GLFWgammaramp* glfwGetGammaRamp(GLFWmonitor* monitor); /*! @brief Sets the current gamma ramp for the specified monitor. * * This function sets the current gamma ramp for the specified monitor. The * original gamma ramp for that monitor is saved by GLFW the first time this * function is called and is restored by @ref glfwTerminate. * * The software controlled gamma ramp is applied _in addition_ to the hardware * gamma correction, which today is usually an approximation of sRGB gamma. * This means that setting a perfectly linear ramp, or gamma 1.0, will produce * the default (usually sRGB-like) behavior. * * For gamma correct rendering with OpenGL or OpenGL ES, see the @ref * GLFW_SRGB_CAPABLE hint. * * @param[in] monitor The monitor whose gamma ramp to set. * @param[in] ramp The gamma ramp to use. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref GLFW_PLATFORM_ERROR * and @ref GLFW_FEATURE_UNAVAILABLE (see remarks). * * @remark The size of the specified gamma ramp should match the size of the * current ramp for that monitor. * * @remark @win32 The gamma ramp size must be 256. * * @remark @wayland Gamma handling is a privileged protocol, this function * will thus never be implemented and emits @ref GLFW_FEATURE_UNAVAILABLE. * * @pointer_lifetime The specified gamma ramp is copied before this function * returns. * * @thread_safety This function must only be called from the main thread. * * @sa @ref monitor_gamma * * @since Added in version 3.0. * * @ingroup monitor */ GLFWAPI void glfwSetGammaRamp(GLFWmonitor* monitor, const GLFWgammaramp* ramp); /*! @brief Resets all window hints to their default values. * * This function resets all window hints to their * [default values](@ref window_hints_values). * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_hints * @sa @ref glfwWindowHint * @sa @ref glfwWindowHintString * * @since Added in version 3.0. * * @ingroup window */ GLFWAPI void glfwDefaultWindowHints(void); /*! @brief Sets the specified window hint to the desired value. * * This function sets hints for the next call to @ref glfwCreateWindow. The * hints, once set, retain their values until changed by a call to this * function or @ref glfwDefaultWindowHints, or until the library is terminated. * * Only integer value hints can be set with this function. String value hints * are set with @ref glfwWindowHintString. * * This function does not check whether the specified hint values are valid. * If you set hints to invalid values this will instead be reported by the next * call to @ref glfwCreateWindow. * * Some hints are platform specific. These may be set on any platform but they * will only affect their specific platform. Other platforms will ignore them. * Setting these hints requires no platform specific headers or functions. * * @param[in] hint The [window hint](@ref window_hints) to set. * @param[in] value The new value of the window hint. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_INVALID_ENUM. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_hints * @sa @ref glfwWindowHintString * @sa @ref glfwDefaultWindowHints * * @since Added in version 3.0. Replaces `glfwOpenWindowHint`. * * @ingroup window */ GLFWAPI void glfwWindowHint(int hint, int value); /*! @brief Sets the specified window hint to the desired value. * * This function sets hints for the next call to @ref glfwCreateWindow. The * hints, once set, retain their values until changed by a call to this * function or @ref glfwDefaultWindowHints, or until the library is terminated. * * Only string type hints can be set with this function. Integer value hints * are set with @ref glfwWindowHint. * * This function does not check whether the specified hint values are valid. * If you set hints to invalid values this will instead be reported by the next * call to @ref glfwCreateWindow. * * Some hints are platform specific. These may be set on any platform but they * will only affect their specific platform. Other platforms will ignore them. * Setting these hints requires no platform specific headers or functions. * * @param[in] hint The [window hint](@ref window_hints) to set. * @param[in] value The new value of the window hint. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_INVALID_ENUM. * * @pointer_lifetime The specified string is copied before this function * returns. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_hints * @sa @ref glfwWindowHint * @sa @ref glfwDefaultWindowHints * * @since Added in version 3.3. * * @ingroup window */ GLFWAPI void glfwWindowHintString(int hint, const char* value); /*! @brief Creates a window and its associated context. * * This function creates a window and its associated OpenGL or OpenGL ES * context. Most of the options controlling how the window and its context * should be created are specified with [window hints](@ref window_hints). * * Successful creation does not change which context is current. Before you * can use the newly created context, you need to * [make it current](@ref context_current). For information about the `share` * parameter, see @ref context_sharing. * * The created window, framebuffer and context may differ from what you * requested, as not all parameters and hints are * [hard constraints](@ref window_hints_hard). This includes the size of the * window, especially for full screen windows. To query the actual attributes * of the created window, framebuffer and context, see @ref * glfwGetWindowAttrib, @ref glfwGetWindowSize and @ref glfwGetFramebufferSize. * * To create a full screen window, you need to specify the monitor the window * will cover. If no monitor is specified, the window will be windowed mode. * Unless you have a way for the user to choose a specific monitor, it is * recommended that you pick the primary monitor. For more information on how * to query connected monitors, see @ref monitor_monitors. * * For full screen windows, the specified size becomes the resolution of the * window's _desired video mode_. As long as a full screen window is not * iconified, the supported video mode most closely matching the desired video * mode is set for the specified monitor. For more information about full * screen windows, including the creation of so called _windowed full screen_ * or _borderless full screen_ windows, see @ref window_windowed_full_screen. * * Once you have created the window, you can switch it between windowed and * full screen mode with @ref glfwSetWindowMonitor. This will not affect its * OpenGL or OpenGL ES context. * * By default, newly created windows use the placement recommended by the * window system. To create the window at a specific position, set the @ref * GLFW_POSITION_X and @ref GLFW_POSITION_Y window hints before creation. To * restore the default behavior, set either or both hints back to * `GLFW_ANY_POSITION`. * * As long as at least one full screen window is not iconified, the screensaver * is prohibited from starting. * * Window systems put limits on window sizes. Very large or very small window * dimensions may be overridden by the window system on creation. Check the * actual [size](@ref window_size) after creation. * * The [swap interval](@ref buffer_swap) is not set during window creation and * the initial value may vary depending on driver settings and defaults. * * @param[in] width The desired width, in screen coordinates, of the window. * This must be greater than zero. * @param[in] height The desired height, in screen coordinates, of the window. * This must be greater than zero. * @param[in] title The initial, UTF-8 encoded window title. * @param[in] monitor The monitor to use for full screen mode, or `NULL` for * windowed mode. * @param[in] share The window whose context to share resources with, or `NULL` * to not share resources. * @return The handle of the created window, or `NULL` if an * [error](@ref error_handling) occurred. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref * GLFW_INVALID_ENUM, @ref GLFW_INVALID_VALUE, @ref GLFW_API_UNAVAILABLE, @ref * GLFW_VERSION_UNAVAILABLE, @ref GLFW_FORMAT_UNAVAILABLE, @ref * GLFW_NO_WINDOW_CONTEXT and @ref GLFW_PLATFORM_ERROR. * * @remark @win32 Window creation will fail if the Microsoft GDI software * OpenGL implementation is the only one available. * * @remark @win32 If the executable has an icon resource named `GLFW_ICON,` it * will be set as the initial icon for the window. If no such icon is present, * the `IDI_APPLICATION` icon will be used instead. To set a different icon, * see @ref glfwSetWindowIcon. * * @remark @win32 The context to share resources with must not be current on * any other thread. * * @remark @macos The OS only supports core profile contexts for OpenGL * versions 3.2 and later. Before creating an OpenGL context of version 3.2 or * later you must set the [GLFW_OPENGL_PROFILE](@ref GLFW_OPENGL_PROFILE_hint) * hint accordingly. OpenGL 3.0 and 3.1 contexts are not supported at all * on macOS. * * @remark @macos The GLFW window has no icon, as it is not a document * window, but the dock icon will be the same as the application bundle's icon. * For more information on bundles, see the * [Bundle Programming Guide][bundle-guide] in the Mac Developer Library. * * [bundle-guide]: https://developer.apple.com/library/mac/documentation/CoreFoundation/Conceptual/CFBundles/ * * @remark @macos The window frame will not be rendered at full resolution on * Retina displays unless the * [GLFW_SCALE_FRAMEBUFFER](@ref GLFW_SCALE_FRAMEBUFFER_hint) * hint is `GLFW_TRUE` and the `NSHighResolutionCapable` key is enabled in the * application bundle's `Info.plist`. For more information, see * [High Resolution Guidelines for OS X][hidpi-guide] in the Mac Developer * Library. The GLFW test and example programs use a custom `Info.plist` * template for this, which can be found as `CMake/Info.plist.in` in the source * tree. * * [hidpi-guide]: https://developer.apple.com/library/mac/documentation/GraphicsAnimation/Conceptual/HighResolutionOSX/Explained/Explained.html * * @remark @macos When activating frame autosaving with * [GLFW_COCOA_FRAME_NAME](@ref GLFW_COCOA_FRAME_NAME_hint), the specified * window size and position may be overridden by previously saved values. * * @remark @wayland GLFW uses [libdecor][] where available to create its window * decorations. This in turn uses server-side XDG decorations where available * and provides high quality client-side decorations on compositors like GNOME. * If both XDG decorations and libdecor are unavailable, GLFW falls back to * a very simple set of window decorations that only support moving, resizing * and the window manager's right-click menu. * * [libdecor]: https://gitlab.freedesktop.org/libdecor/libdecor * * @remark @x11 Some window managers will not respect the placement of * initially hidden windows. * * @remark @x11 Due to the asynchronous nature of X11, it may take a moment for * a window to reach its requested state. This means you may not be able to * query the final size, position or other attributes directly after window * creation. * * @remark @x11 The class part of the `WM_CLASS` window property will by * default be set to the window title passed to this function. The instance * part will use the contents of the `RESOURCE_NAME` environment variable, if * present and not empty, or fall back to the window title. Set the * [GLFW_X11_CLASS_NAME](@ref GLFW_X11_CLASS_NAME_hint) and * [GLFW_X11_INSTANCE_NAME](@ref GLFW_X11_INSTANCE_NAME_hint) window hints to * override this. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_creation * @sa @ref glfwDestroyWindow * * @since Added in version 3.0. Replaces `glfwOpenWindow`. * * @ingroup window */ GLFWAPI GLFWwindow* glfwCreateWindow(int width, int height, const char* title, GLFWmonitor* monitor, GLFWwindow* share); /*! @brief Destroys the specified window and its context. * * This function destroys the specified window and its context. On calling * this function, no further callbacks will be called for that window. * * If the context of the specified window is current on the main thread, it is * detached before being destroyed. * * @param[in] window The window to destroy. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_PLATFORM_ERROR. * * @note The context of the specified window must not be current on any other * thread when this function is called. * * @reentrancy This function must not be called from a callback. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_creation * @sa @ref glfwCreateWindow * * @since Added in version 3.0. Replaces `glfwCloseWindow`. * * @ingroup window */ GLFWAPI void glfwDestroyWindow(GLFWwindow* window); /*! @brief Checks the close flag of the specified window. * * This function returns the value of the close flag of the specified window. * * @param[in] window The window to query. * @return The value of the close flag. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function may be called from any thread. Access is not * synchronized. * * @sa @ref window_close * * @since Added in version 3.0. * * @ingroup window */ GLFWAPI int glfwWindowShouldClose(GLFWwindow* window); /*! @brief Sets the close flag of the specified window. * * This function sets the value of the close flag of the specified window. * This can be used to override the user's attempt to close the window, or * to signal that it should be closed. * * @param[in] window The window whose flag to change. * @param[in] value The new value. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function may be called from any thread. Access is not * synchronized. * * @sa @ref window_close * * @since Added in version 3.0. * * @ingroup window */ GLFWAPI void glfwSetWindowShouldClose(GLFWwindow* window, int value); /*! @brief Returns the title of the specified window. * * This function returns the window title, encoded as UTF-8, of the specified * window. This is the title set previously by @ref glfwCreateWindow * or @ref glfwSetWindowTitle. * * @param[in] window The window to query. * @return The UTF-8 encoded window title, or `NULL` if an * [error](@ref error_handling) occurred. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @remark The returned title is currently a copy of the title last set by @ref * glfwCreateWindow or @ref glfwSetWindowTitle. It does not include any * additional text which may be appended by the platform or another program. * * @pointer_lifetime The returned string is allocated and freed by GLFW. You * should not free it yourself. It is valid until the next call to @ref * glfwGetWindowTitle or @ref glfwSetWindowTitle, or until the library is * terminated. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_title * @sa @ref glfwSetWindowTitle * * @since Added in version 3.4. * * @ingroup window */ GLFWAPI const char* glfwGetWindowTitle(GLFWwindow* window); /*! @brief Sets the title of the specified window. * * This function sets the window title, encoded as UTF-8, of the specified * window. * * @param[in] window The window whose title to change. * @param[in] title The UTF-8 encoded window title. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_PLATFORM_ERROR. * * @remark @macos The window title will not be updated until the next time you * process events. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_title * @sa @ref glfwGetWindowTitle * * @since Added in version 1.0. * @glfw3 Added window handle parameter. * * @ingroup window */ GLFWAPI void glfwSetWindowTitle(GLFWwindow* window, const char* title); /*! @brief Sets the icon for the specified window. * * This function sets the icon of the specified window. If passed an array of * candidate images, those of or closest to the sizes desired by the system are * selected. If no images are specified, the window reverts to its default * icon. * * The pixels are 32-bit, little-endian, non-premultiplied RGBA, i.e. eight * bits per channel with the red channel first. They are arranged canonically * as packed sequential rows, starting from the top-left corner. * * The desired image sizes varies depending on platform and system settings. * The selected images will be rescaled as needed. Good sizes include 16x16, * 32x32 and 48x48. * * @param[in] window The window whose icon to set. * @param[in] count The number of images in the specified array, or zero to * revert to the default window icon. * @param[in] images The images to create the icon from. This is ignored if * count is zero. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref * GLFW_INVALID_VALUE, @ref GLFW_PLATFORM_ERROR and @ref * GLFW_FEATURE_UNAVAILABLE (see remarks). * * @pointer_lifetime The specified image data is copied before this function * returns. * * @remark @macos Regular windows do not have icons on macOS. This function * will emit @ref GLFW_FEATURE_UNAVAILABLE. The dock icon will be the same as * the application bundle's icon. For more information on bundles, see the * [Bundle Programming Guide][bundle-guide] in the Mac Developer Library. * * [bundle-guide]: https://developer.apple.com/library/mac/documentation/CoreFoundation/Conceptual/CFBundles/ * * @remark @wayland There is no existing protocol to change an icon, the * window will thus inherit the one defined in the application's desktop file. * This function will emit @ref GLFW_FEATURE_UNAVAILABLE. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_icon * * @since Added in version 3.2. * * @ingroup window */ GLFWAPI void glfwSetWindowIcon(GLFWwindow* window, int count, const GLFWimage* images); /*! @brief Retrieves the position of the content area of the specified window. * * This function retrieves the position, in screen coordinates, of the * upper-left corner of the content area of the specified window. * * Any or all of the position arguments may be `NULL`. If an error occurs, all * non-`NULL` position arguments will be set to zero. * * @param[in] window The window to query. * @param[out] xpos Where to store the x-coordinate of the upper-left corner of * the content area, or `NULL`. * @param[out] ypos Where to store the y-coordinate of the upper-left corner of * the content area, or `NULL`. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref * GLFW_PLATFORM_ERROR and @ref GLFW_FEATURE_UNAVAILABLE (see remarks). * * @remark @wayland There is no way for an application to retrieve the global * position of its windows. This function will emit @ref * GLFW_FEATURE_UNAVAILABLE. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_pos * @sa @ref glfwSetWindowPos * * @since Added in version 3.0. * * @ingroup window */ GLFWAPI void glfwGetWindowPos(GLFWwindow* window, int* xpos, int* ypos); /*! @brief Sets the position of the content area of the specified window. * * This function sets the position, in screen coordinates, of the upper-left * corner of the content area of the specified windowed mode window. If the * window is a full screen window, this function does nothing. * * __Do not use this function__ to move an already visible window unless you * have very good reasons for doing so, as it will confuse and annoy the user. * * The window manager may put limits on what positions are allowed. GLFW * cannot and should not override these limits. * * @param[in] window The window to query. * @param[in] xpos The x-coordinate of the upper-left corner of the content area. * @param[in] ypos The y-coordinate of the upper-left corner of the content area. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref * GLFW_PLATFORM_ERROR and @ref GLFW_FEATURE_UNAVAILABLE (see remarks). * * @remark @wayland There is no way for an application to set the global * position of its windows. This function will emit @ref * GLFW_FEATURE_UNAVAILABLE. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_pos * @sa @ref glfwGetWindowPos * * @since Added in version 1.0. * @glfw3 Added window handle parameter. * * @ingroup window */ GLFWAPI void glfwSetWindowPos(GLFWwindow* window, int xpos, int ypos); /*! @brief Retrieves the size of the content area of the specified window. * * This function retrieves the size, in screen coordinates, of the content area * of the specified window. If you wish to retrieve the size of the * framebuffer of the window in pixels, see @ref glfwGetFramebufferSize. * * Any or all of the size arguments may be `NULL`. If an error occurs, all * non-`NULL` size arguments will be set to zero. * * @param[in] window The window whose size to retrieve. * @param[out] width Where to store the width, in screen coordinates, of the * content area, or `NULL`. * @param[out] height Where to store the height, in screen coordinates, of the * content area, or `NULL`. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_PLATFORM_ERROR. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_size * @sa @ref glfwSetWindowSize * * @since Added in version 1.0. * @glfw3 Added window handle parameter. * * @ingroup window */ GLFWAPI void glfwGetWindowSize(GLFWwindow* window, int* width, int* height); /*! @brief Sets the size limits of the specified window. * * This function sets the size limits of the content area of the specified * window. If the window is full screen, the size limits only take effect * once it is made windowed. If the window is not resizable, this function * does nothing. * * The size limits are applied immediately to a windowed mode window and may * cause it to be resized. * * The maximum dimensions must be greater than or equal to the minimum * dimensions and all must be greater than or equal to zero. * * @param[in] window The window to set limits for. * @param[in] minwidth The minimum width, in screen coordinates, of the content * area, or `GLFW_DONT_CARE`. * @param[in] minheight The minimum height, in screen coordinates, of the * content area, or `GLFW_DONT_CARE`. * @param[in] maxwidth The maximum width, in screen coordinates, of the content * area, or `GLFW_DONT_CARE`. * @param[in] maxheight The maximum height, in screen coordinates, of the * content area, or `GLFW_DONT_CARE`. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref * GLFW_INVALID_VALUE and @ref GLFW_PLATFORM_ERROR. * * @remark If you set size limits and an aspect ratio that conflict, the * results are undefined. * * @remark @wayland The size limits will not be applied until the window is * actually resized, either by the user or by the compositor. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_sizelimits * @sa @ref glfwSetWindowAspectRatio * * @since Added in version 3.2. * * @ingroup window */ GLFWAPI void glfwSetWindowSizeLimits(GLFWwindow* window, int minwidth, int minheight, int maxwidth, int maxheight); /*! @brief Sets the aspect ratio of the specified window. * * This function sets the required aspect ratio of the content area of the * specified window. If the window is full screen, the aspect ratio only takes * effect once it is made windowed. If the window is not resizable, this * function does nothing. * * The aspect ratio is specified as a numerator and a denominator and both * values must be greater than zero. For example, the common 16:9 aspect ratio * is specified as 16 and 9, respectively. * * If the numerator and denominator is set to `GLFW_DONT_CARE` then the aspect * ratio limit is disabled. * * The aspect ratio is applied immediately to a windowed mode window and may * cause it to be resized. * * @param[in] window The window to set limits for. * @param[in] numer The numerator of the desired aspect ratio, or * `GLFW_DONT_CARE`. * @param[in] denom The denominator of the desired aspect ratio, or * `GLFW_DONT_CARE`. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref * GLFW_INVALID_VALUE and @ref GLFW_PLATFORM_ERROR. * * @remark If you set size limits and an aspect ratio that conflict, the * results are undefined. * * @remark @wayland The aspect ratio will not be applied until the window is * actually resized, either by the user or by the compositor. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_sizelimits * @sa @ref glfwSetWindowSizeLimits * * @since Added in version 3.2. * * @ingroup window */ GLFWAPI void glfwSetWindowAspectRatio(GLFWwindow* window, int numer, int denom); /*! @brief Sets the size of the content area of the specified window. * * This function sets the size, in screen coordinates, of the content area of * the specified window. * * For full screen windows, this function updates the resolution of its desired * video mode and switches to the video mode closest to it, without affecting * the window's context. As the context is unaffected, the bit depths of the * framebuffer remain unchanged. * * If you wish to update the refresh rate of the desired video mode in addition * to its resolution, see @ref glfwSetWindowMonitor. * * The window manager may put limits on what sizes are allowed. GLFW cannot * and should not override these limits. * * @param[in] window The window to resize. * @param[in] width The desired width, in screen coordinates, of the window * content area. * @param[in] height The desired height, in screen coordinates, of the window * content area. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_PLATFORM_ERROR. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_size * @sa @ref glfwGetWindowSize * @sa @ref glfwSetWindowMonitor * * @since Added in version 1.0. * @glfw3 Added window handle parameter. * * @ingroup window */ GLFWAPI void glfwSetWindowSize(GLFWwindow* window, int width, int height); /*! @brief Retrieves the size of the framebuffer of the specified window. * * This function retrieves the size, in pixels, of the framebuffer of the * specified window. If you wish to retrieve the size of the window in screen * coordinates, see @ref glfwGetWindowSize. * * Any or all of the size arguments may be `NULL`. If an error occurs, all * non-`NULL` size arguments will be set to zero. * * @param[in] window The window whose framebuffer to query. * @param[out] width Where to store the width, in pixels, of the framebuffer, * or `NULL`. * @param[out] height Where to store the height, in pixels, of the framebuffer, * or `NULL`. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_PLATFORM_ERROR. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_fbsize * @sa @ref glfwSetFramebufferSizeCallback * * @since Added in version 3.0. * * @ingroup window */ GLFWAPI void glfwGetFramebufferSize(GLFWwindow* window, int* width, int* height); /*! @brief Retrieves the size of the frame of the window. * * This function retrieves the size, in screen coordinates, of each edge of the * frame of the specified window. This size includes the title bar, if the * window has one. The size of the frame may vary depending on the * [window-related hints](@ref window_hints_wnd) used to create it. * * Because this function retrieves the size of each window frame edge and not * the offset along a particular coordinate axis, the retrieved values will * always be zero or positive. * * Any or all of the size arguments may be `NULL`. If an error occurs, all * non-`NULL` size arguments will be set to zero. * * @param[in] window The window whose frame size to query. * @param[out] left Where to store the size, in screen coordinates, of the left * edge of the window frame, or `NULL`. * @param[out] top Where to store the size, in screen coordinates, of the top * edge of the window frame, or `NULL`. * @param[out] right Where to store the size, in screen coordinates, of the * right edge of the window frame, or `NULL`. * @param[out] bottom Where to store the size, in screen coordinates, of the * bottom edge of the window frame, or `NULL`. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_PLATFORM_ERROR. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_size * * @since Added in version 3.1. * * @ingroup window */ GLFWAPI void glfwGetWindowFrameSize(GLFWwindow* window, int* left, int* top, int* right, int* bottom); /*! @brief Retrieves the content scale for the specified window. * * This function retrieves the content scale for the specified window. The * content scale is the ratio between the current DPI and the platform's * default DPI. This is especially important for text and any UI elements. If * the pixel dimensions of your UI scaled by this look appropriate on your * machine then it should appear at a reasonable size on other machines * regardless of their DPI and scaling settings. This relies on the system DPI * and scaling settings being somewhat correct. * * On platforms where each monitors can have its own content scale, the window * content scale will depend on which monitor the system considers the window * to be on. * * @param[in] window The window to query. * @param[out] xscale Where to store the x-axis content scale, or `NULL`. * @param[out] yscale Where to store the y-axis content scale, or `NULL`. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_PLATFORM_ERROR. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_scale * @sa @ref glfwSetWindowContentScaleCallback * @sa @ref glfwGetMonitorContentScale * * @since Added in version 3.3. * * @ingroup window */ GLFWAPI void glfwGetWindowContentScale(GLFWwindow* window, float* xscale, float* yscale); /*! @brief Returns the opacity of the whole window. * * This function returns the opacity of the window, including any decorations. * * The opacity (or alpha) value is a positive finite number between zero and * one, where zero is fully transparent and one is fully opaque. If the system * does not support whole window transparency, this function always returns one. * * The initial opacity value for newly created windows is one. * * @param[in] window The window to query. * @return The opacity value of the specified window. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_PLATFORM_ERROR. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_transparency * @sa @ref glfwSetWindowOpacity * * @since Added in version 3.3. * * @ingroup window */ GLFWAPI float glfwGetWindowOpacity(GLFWwindow* window); /*! @brief Sets the opacity of the whole window. * * This function sets the opacity of the window, including any decorations. * * The opacity (or alpha) value is a positive finite number between zero and * one, where zero is fully transparent and one is fully opaque. * * The initial opacity value for newly created windows is one. * * A window created with framebuffer transparency may not use whole window * transparency. The results of doing this are undefined. * * @param[in] window The window to set the opacity for. * @param[in] opacity The desired opacity of the specified window. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref * GLFW_PLATFORM_ERROR and @ref GLFW_FEATURE_UNAVAILABLE (see remarks). * * @remark @wayland There is no way to set an opacity factor for a window. * This function will emit @ref GLFW_FEATURE_UNAVAILABLE. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_transparency * @sa @ref glfwGetWindowOpacity * * @since Added in version 3.3. * * @ingroup window */ GLFWAPI void glfwSetWindowOpacity(GLFWwindow* window, float opacity); /*! @brief Iconifies the specified window. * * This function iconifies (minimizes) the specified window if it was * previously restored. If the window is already iconified, this function does * nothing. * * If the specified window is a full screen window, GLFW restores the original * video mode of the monitor. The window's desired video mode is set again * when the window is restored. * * @param[in] window The window to iconify. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_PLATFORM_ERROR. * * @remark @wayland Once a window is iconified, @ref glfwRestoreWindow won’t * be able to restore it. This is a design decision of the xdg-shell * protocol. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_iconify * @sa @ref glfwRestoreWindow * @sa @ref glfwMaximizeWindow * * @since Added in version 2.1. * @glfw3 Added window handle parameter. * * @ingroup window */ GLFWAPI void glfwIconifyWindow(GLFWwindow* window); /*! @brief Restores the specified window. * * This function restores the specified window if it was previously iconified * (minimized) or maximized. If the window is already restored, this function * does nothing. * * If the specified window is an iconified full screen window, its desired * video mode is set again for its monitor when the window is restored. * * @param[in] window The window to restore. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_PLATFORM_ERROR. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_iconify * @sa @ref glfwIconifyWindow * @sa @ref glfwMaximizeWindow * * @since Added in version 2.1. * @glfw3 Added window handle parameter. * * @ingroup window */ GLFWAPI void glfwRestoreWindow(GLFWwindow* window); /*! @brief Maximizes the specified window. * * This function maximizes the specified window if it was previously not * maximized. If the window is already maximized, this function does nothing. * * If the specified window is a full screen window, this function does nothing. * * @param[in] window The window to maximize. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_PLATFORM_ERROR. * * @par Thread Safety * This function may only be called from the main thread. * * @sa @ref window_iconify * @sa @ref glfwIconifyWindow * @sa @ref glfwRestoreWindow * * @since Added in GLFW 3.2. * * @ingroup window */ GLFWAPI void glfwMaximizeWindow(GLFWwindow* window); /*! @brief Makes the specified window visible. * * This function makes the specified window visible if it was previously * hidden. If the window is already visible or is in full screen mode, this * function does nothing. * * By default, windowed mode windows are focused when shown * Set the [GLFW_FOCUS_ON_SHOW](@ref GLFW_FOCUS_ON_SHOW_hint) window hint * to change this behavior for all newly created windows, or change the * behavior for an existing window with @ref glfwSetWindowAttrib. * * @param[in] window The window to make visible. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_PLATFORM_ERROR. * * @remark @wayland Because Wayland wants every frame of the desktop to be * complete, this function does not immediately make the window visible. * Instead it will become visible the next time the window framebuffer is * updated after this call. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_hide * @sa @ref glfwHideWindow * * @since Added in version 3.0. * * @ingroup window */ GLFWAPI void glfwShowWindow(GLFWwindow* window); /*! @brief Hides the specified window. * * This function hides the specified window if it was previously visible. If * the window is already hidden or is in full screen mode, this function does * nothing. * * @param[in] window The window to hide. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_PLATFORM_ERROR. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_hide * @sa @ref glfwShowWindow * * @since Added in version 3.0. * * @ingroup window */ GLFWAPI void glfwHideWindow(GLFWwindow* window); /*! @brief Brings the specified window to front and sets input focus. * * This function brings the specified window to front and sets input focus. * The window should already be visible and not iconified. * * By default, both windowed and full screen mode windows are focused when * initially created. Set the [GLFW_FOCUSED](@ref GLFW_FOCUSED_hint) to * disable this behavior. * * Also by default, windowed mode windows are focused when shown * with @ref glfwShowWindow. Set the * [GLFW_FOCUS_ON_SHOW](@ref GLFW_FOCUS_ON_SHOW_hint) to disable this behavior. * * __Do not use this function__ to steal focus from other applications unless * you are certain that is what the user wants. Focus stealing can be * extremely disruptive. * * For a less disruptive way of getting the user's attention, see * [attention requests](@ref window_attention). * * @param[in] window The window to give input focus. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_PLATFORM_ERROR. * * @remark @wayland The compositor will likely ignore focus requests unless * another window created by the same application already has input focus. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_focus * @sa @ref window_attention * * @since Added in version 3.2. * * @ingroup window */ GLFWAPI void glfwFocusWindow(GLFWwindow* window); /*! @brief Requests user attention to the specified window. * * This function requests user attention to the specified window. On * platforms where this is not supported, attention is requested to the * application as a whole. * * Once the user has given attention, usually by focusing the window or * application, the system will end the request automatically. * * @param[in] window The window to request attention to. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_PLATFORM_ERROR. * * @remark @macos Attention is requested to the application as a whole, not the * specific window. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_attention * * @since Added in version 3.3. * * @ingroup window */ GLFWAPI void glfwRequestWindowAttention(GLFWwindow* window); /*! @brief Returns the monitor that the window uses for full screen mode. * * This function returns the handle of the monitor that the specified window is * in full screen on. * * @param[in] window The window to query. * @return The monitor, or `NULL` if the window is in windowed mode or an * [error](@ref error_handling) occurred. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_monitor * @sa @ref glfwSetWindowMonitor * * @since Added in version 3.0. * * @ingroup window */ GLFWAPI GLFWmonitor* glfwGetWindowMonitor(GLFWwindow* window); /*! @brief Sets the mode, monitor, video mode and placement of a window. * * This function sets the monitor that the window uses for full screen mode or, * if the monitor is `NULL`, makes it windowed mode. * * When setting a monitor, this function updates the width, height and refresh * rate of the desired video mode and switches to the video mode closest to it. * The window position is ignored when setting a monitor. * * When the monitor is `NULL`, the position, width and height are used to * place the window content area. The refresh rate is ignored when no monitor * is specified. * * If you only wish to update the resolution of a full screen window or the * size of a windowed mode window, see @ref glfwSetWindowSize. * * When a window transitions from full screen to windowed mode, this function * restores any previous window settings such as whether it is decorated, * floating, resizable, has size or aspect ratio limits, etc. * * @param[in] window The window whose monitor, size or video mode to set. * @param[in] monitor The desired monitor, or `NULL` to set windowed mode. * @param[in] xpos The desired x-coordinate of the upper-left corner of the * content area. * @param[in] ypos The desired y-coordinate of the upper-left corner of the * content area. * @param[in] width The desired with, in screen coordinates, of the content * area or video mode. * @param[in] height The desired height, in screen coordinates, of the content * area or video mode. * @param[in] refreshRate The desired refresh rate, in Hz, of the video mode, * or `GLFW_DONT_CARE`. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_PLATFORM_ERROR. * * @remark The OpenGL or OpenGL ES context will not be destroyed or otherwise * affected by any resizing or mode switching, although you may need to update * your viewport if the framebuffer size has changed. * * @remark @wayland The desired window position is ignored, as there is no way * for an application to set this property. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_monitor * @sa @ref window_full_screen * @sa @ref glfwGetWindowMonitor * @sa @ref glfwSetWindowSize * * @since Added in version 3.2. * * @ingroup window */ GLFWAPI void glfwSetWindowMonitor(GLFWwindow* window, GLFWmonitor* monitor, int xpos, int ypos, int width, int height, int refreshRate); /*! @brief Returns an attribute of the specified window. * * This function returns the value of an attribute of the specified window or * its OpenGL or OpenGL ES context. * * @param[in] window The window to query. * @param[in] attrib The [window attribute](@ref window_attribs) whose value to * return. * @return The value of the attribute, or zero if an * [error](@ref error_handling) occurred. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref * GLFW_INVALID_ENUM and @ref GLFW_PLATFORM_ERROR. * * @remark Framebuffer related hints are not window attributes. See @ref * window_attribs_fb for more information. * * @remark Zero is a valid value for many window and context related * attributes so you cannot use a return value of zero as an indication of * errors. However, this function should not fail as long as it is passed * valid arguments and the library has been [initialized](@ref intro_init). * * @remark @wayland The Wayland protocol provides no way to check whether a * window is iconfied, so @ref GLFW_ICONIFIED always returns `GLFW_FALSE`. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_attribs * @sa @ref glfwSetWindowAttrib * * @since Added in version 3.0. Replaces `glfwGetWindowParam` and * `glfwGetGLVersion`. * * @ingroup window */ GLFWAPI int glfwGetWindowAttrib(GLFWwindow* window, int attrib); /*! @brief Sets an attribute of the specified window. * * This function sets the value of an attribute of the specified window. * * The supported attributes are [GLFW_DECORATED](@ref GLFW_DECORATED_attrib), * [GLFW_RESIZABLE](@ref GLFW_RESIZABLE_attrib), * [GLFW_FLOATING](@ref GLFW_FLOATING_attrib), * [GLFW_AUTO_ICONIFY](@ref GLFW_AUTO_ICONIFY_attrib) and * [GLFW_FOCUS_ON_SHOW](@ref GLFW_FOCUS_ON_SHOW_attrib). * [GLFW_MOUSE_PASSTHROUGH](@ref GLFW_MOUSE_PASSTHROUGH_attrib) * * Some of these attributes are ignored for full screen windows. The new * value will take effect if the window is later made windowed. * * Some of these attributes are ignored for windowed mode windows. The new * value will take effect if the window is later made full screen. * * @param[in] window The window to set the attribute for. * @param[in] attrib A supported window attribute. * @param[in] value `GLFW_TRUE` or `GLFW_FALSE`. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref * GLFW_INVALID_ENUM, @ref GLFW_INVALID_VALUE, @ref GLFW_PLATFORM_ERROR and @ref * GLFW_FEATURE_UNAVAILABLE (see remarks). * * @remark Calling @ref glfwGetWindowAttrib will always return the latest * value, even if that value is ignored by the current mode of the window. * * @remark @wayland The [GLFW_FLOATING](@ref GLFW_FLOATING_attrib) window attribute is * not supported. Setting this will emit @ref GLFW_FEATURE_UNAVAILABLE. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_attribs * @sa @ref glfwGetWindowAttrib * * @since Added in version 3.3. * * @ingroup window */ GLFWAPI void glfwSetWindowAttrib(GLFWwindow* window, int attrib, int value); /*! @brief Sets the user pointer of the specified window. * * This function sets the user-defined pointer of the specified window. The * current value is retained until the window is destroyed. The initial value * is `NULL`. * * @param[in] window The window whose pointer to set. * @param[in] pointer The new value. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function may be called from any thread. Access is not * synchronized. * * @sa @ref window_userptr * @sa @ref glfwGetWindowUserPointer * * @since Added in version 3.0. * * @ingroup window */ GLFWAPI void glfwSetWindowUserPointer(GLFWwindow* window, void* pointer); /*! @brief Returns the user pointer of the specified window. * * This function returns the current value of the user-defined pointer of the * specified window. The initial value is `NULL`. * * @param[in] window The window whose pointer to return. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function may be called from any thread. Access is not * synchronized. * * @sa @ref window_userptr * @sa @ref glfwSetWindowUserPointer * * @since Added in version 3.0. * * @ingroup window */ GLFWAPI void* glfwGetWindowUserPointer(GLFWwindow* window); /*! @brief Sets the position callback for the specified window. * * This function sets the position callback of the specified window, which is * called when the window is moved. The callback is provided with the * position, in screen coordinates, of the upper-left corner of the content * area of the window. * * @param[in] window The window whose callback to set. * @param[in] callback The new callback, or `NULL` to remove the currently set * callback. * @return The previously set callback, or `NULL` if no callback was set or the * library had not been [initialized](@ref intro_init). * * @callback_signature * @code * void function_name(GLFWwindow* window, int xpos, int ypos) * @endcode * For more information about the callback parameters, see the * [function pointer type](@ref GLFWwindowposfun). * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @remark @wayland This callback will never be called, as there is no way for * an application to know its global position. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_pos * * @since Added in version 3.0. * * @ingroup window */ GLFWAPI GLFWwindowposfun glfwSetWindowPosCallback(GLFWwindow* window, GLFWwindowposfun callback); /*! @brief Sets the size callback for the specified window. * * This function sets the size callback of the specified window, which is * called when the window is resized. The callback is provided with the size, * in screen coordinates, of the content area of the window. * * @param[in] window The window whose callback to set. * @param[in] callback The new callback, or `NULL` to remove the currently set * callback. * @return The previously set callback, or `NULL` if no callback was set or the * library had not been [initialized](@ref intro_init). * * @callback_signature * @code * void function_name(GLFWwindow* window, int width, int height) * @endcode * For more information about the callback parameters, see the * [function pointer type](@ref GLFWwindowsizefun). * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_size * * @since Added in version 1.0. * @glfw3 Added window handle parameter and return value. * * @ingroup window */ GLFWAPI GLFWwindowsizefun glfwSetWindowSizeCallback(GLFWwindow* window, GLFWwindowsizefun callback); /*! @brief Sets the close callback for the specified window. * * This function sets the close callback of the specified window, which is * called when the user attempts to close the window, for example by clicking * the close widget in the title bar. * * The close flag is set before this callback is called, but you can modify it * at any time with @ref glfwSetWindowShouldClose. * * The close callback is not triggered by @ref glfwDestroyWindow. * * @param[in] window The window whose callback to set. * @param[in] callback The new callback, or `NULL` to remove the currently set * callback. * @return The previously set callback, or `NULL` if no callback was set or the * library had not been [initialized](@ref intro_init). * * @callback_signature * @code * void function_name(GLFWwindow* window) * @endcode * For more information about the callback parameters, see the * [function pointer type](@ref GLFWwindowclosefun). * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @remark @macos Selecting Quit from the application menu will trigger the * close callback for all windows. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_close * * @since Added in version 2.5. * @glfw3 Added window handle parameter and return value. * * @ingroup window */ GLFWAPI GLFWwindowclosefun glfwSetWindowCloseCallback(GLFWwindow* window, GLFWwindowclosefun callback); /*! @brief Sets the refresh callback for the specified window. * * This function sets the refresh callback of the specified window, which is * called when the content area of the window needs to be redrawn, for example * if the window has been exposed after having been covered by another window. * * On compositing window systems such as Aero, Compiz, Aqua or Wayland, where * the window contents are saved off-screen, this callback may be called only * very infrequently or never at all. * * @param[in] window The window whose callback to set. * @param[in] callback The new callback, or `NULL` to remove the currently set * callback. * @return The previously set callback, or `NULL` if no callback was set or the * library had not been [initialized](@ref intro_init). * * @callback_signature * @code * void function_name(GLFWwindow* window); * @endcode * For more information about the callback parameters, see the * [function pointer type](@ref GLFWwindowrefreshfun). * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_refresh * * @since Added in version 2.5. * @glfw3 Added window handle parameter and return value. * * @ingroup window */ GLFWAPI GLFWwindowrefreshfun glfwSetWindowRefreshCallback(GLFWwindow* window, GLFWwindowrefreshfun callback); /*! @brief Sets the focus callback for the specified window. * * This function sets the focus callback of the specified window, which is * called when the window gains or loses input focus. * * After the focus callback is called for a window that lost input focus, * synthetic key and mouse button release events will be generated for all such * that had been pressed. For more information, see @ref glfwSetKeyCallback * and @ref glfwSetMouseButtonCallback. * * @param[in] window The window whose callback to set. * @param[in] callback The new callback, or `NULL` to remove the currently set * callback. * @return The previously set callback, or `NULL` if no callback was set or the * library had not been [initialized](@ref intro_init). * * @callback_signature * @code * void function_name(GLFWwindow* window, int focused) * @endcode * For more information about the callback parameters, see the * [function pointer type](@ref GLFWwindowfocusfun). * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_focus * * @since Added in version 3.0. * * @ingroup window */ GLFWAPI GLFWwindowfocusfun glfwSetWindowFocusCallback(GLFWwindow* window, GLFWwindowfocusfun callback); /*! @brief Sets the iconify callback for the specified window. * * This function sets the iconification callback of the specified window, which * is called when the window is iconified or restored. * * @param[in] window The window whose callback to set. * @param[in] callback The new callback, or `NULL` to remove the currently set * callback. * @return The previously set callback, or `NULL` if no callback was set or the * library had not been [initialized](@ref intro_init). * * @callback_signature * @code * void function_name(GLFWwindow* window, int iconified) * @endcode * For more information about the callback parameters, see the * [function pointer type](@ref GLFWwindowiconifyfun). * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_iconify * * @since Added in version 3.0. * * @ingroup window */ GLFWAPI GLFWwindowiconifyfun glfwSetWindowIconifyCallback(GLFWwindow* window, GLFWwindowiconifyfun callback); /*! @brief Sets the maximize callback for the specified window. * * This function sets the maximization callback of the specified window, which * is called when the window is maximized or restored. * * @param[in] window The window whose callback to set. * @param[in] callback The new callback, or `NULL` to remove the currently set * callback. * @return The previously set callback, or `NULL` if no callback was set or the * library had not been [initialized](@ref intro_init). * * @callback_signature * @code * void function_name(GLFWwindow* window, int maximized) * @endcode * For more information about the callback parameters, see the * [function pointer type](@ref GLFWwindowmaximizefun). * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_maximize * * @since Added in version 3.3. * * @ingroup window */ GLFWAPI GLFWwindowmaximizefun glfwSetWindowMaximizeCallback(GLFWwindow* window, GLFWwindowmaximizefun callback); /*! @brief Sets the framebuffer resize callback for the specified window. * * This function sets the framebuffer resize callback of the specified window, * which is called when the framebuffer of the specified window is resized. * * @param[in] window The window whose callback to set. * @param[in] callback The new callback, or `NULL` to remove the currently set * callback. * @return The previously set callback, or `NULL` if no callback was set or the * library had not been [initialized](@ref intro_init). * * @callback_signature * @code * void function_name(GLFWwindow* window, int width, int height) * @endcode * For more information about the callback parameters, see the * [function pointer type](@ref GLFWframebuffersizefun). * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_fbsize * * @since Added in version 3.0. * * @ingroup window */ GLFWAPI GLFWframebuffersizefun glfwSetFramebufferSizeCallback(GLFWwindow* window, GLFWframebuffersizefun callback); /*! @brief Sets the window content scale callback for the specified window. * * This function sets the window content scale callback of the specified window, * which is called when the content scale of the specified window changes. * * @param[in] window The window whose callback to set. * @param[in] callback The new callback, or `NULL` to remove the currently set * callback. * @return The previously set callback, or `NULL` if no callback was set or the * library had not been [initialized](@ref intro_init). * * @callback_signature * @code * void function_name(GLFWwindow* window, float xscale, float yscale) * @endcode * For more information about the callback parameters, see the * [function pointer type](@ref GLFWwindowcontentscalefun). * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function must only be called from the main thread. * * @sa @ref window_scale * @sa @ref glfwGetWindowContentScale * * @since Added in version 3.3. * * @ingroup window */ GLFWAPI GLFWwindowcontentscalefun glfwSetWindowContentScaleCallback(GLFWwindow* window, GLFWwindowcontentscalefun callback); /*! @brief Processes all pending events. * * This function processes only those events that are already in the event * queue and then returns immediately. Processing events will cause the window * and input callbacks associated with those events to be called. * * On some platforms, a window move, resize or menu operation will cause event * processing to block. This is due to how event processing is designed on * those platforms. You can use the * [window refresh callback](@ref window_refresh) to redraw the contents of * your window when necessary during such operations. * * Do not assume that callbacks you set will _only_ be called in response to * event processing functions like this one. While it is necessary to poll for * events, window systems that require GLFW to register callbacks of its own * can pass events to GLFW in response to many window system function calls. * GLFW will pass those events on to the application callbacks before * returning. * * Event processing is not required for joystick input to work. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_PLATFORM_ERROR. * * @reentrancy This function must not be called from a callback. * * @thread_safety This function must only be called from the main thread. * * @sa @ref events * @sa @ref glfwWaitEvents * @sa @ref glfwWaitEventsTimeout * * @since Added in version 1.0. * * @ingroup window */ GLFWAPI void glfwPollEvents(void); /*! @brief Waits until events are queued and processes them. * * This function puts the calling thread to sleep until at least one event is * available in the event queue. Once one or more events are available, * it behaves exactly like @ref glfwPollEvents, i.e. the events in the queue * are processed and the function then returns immediately. Processing events * will cause the window and input callbacks associated with those events to be * called. * * Since not all events are associated with callbacks, this function may return * without a callback having been called even if you are monitoring all * callbacks. * * On some platforms, a window move, resize or menu operation will cause event * processing to block. This is due to how event processing is designed on * those platforms. You can use the * [window refresh callback](@ref window_refresh) to redraw the contents of * your window when necessary during such operations. * * Do not assume that callbacks you set will _only_ be called in response to * event processing functions like this one. While it is necessary to poll for * events, window systems that require GLFW to register callbacks of its own * can pass events to GLFW in response to many window system function calls. * GLFW will pass those events on to the application callbacks before * returning. * * Event processing is not required for joystick input to work. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_PLATFORM_ERROR. * * @reentrancy This function must not be called from a callback. * * @thread_safety This function must only be called from the main thread. * * @sa @ref events * @sa @ref glfwPollEvents * @sa @ref glfwWaitEventsTimeout * * @since Added in version 2.5. * * @ingroup window */ GLFWAPI void glfwWaitEvents(void); /*! @brief Waits with timeout until events are queued and processes them. * * This function puts the calling thread to sleep until at least one event is * available in the event queue, or until the specified timeout is reached. If * one or more events are available, it behaves exactly like @ref * glfwPollEvents, i.e. the events in the queue are processed and the function * then returns immediately. Processing events will cause the window and input * callbacks associated with those events to be called. * * The timeout value must be a positive finite number. * * Since not all events are associated with callbacks, this function may return * without a callback having been called even if you are monitoring all * callbacks. * * On some platforms, a window move, resize or menu operation will cause event * processing to block. This is due to how event processing is designed on * those platforms. You can use the * [window refresh callback](@ref window_refresh) to redraw the contents of * your window when necessary during such operations. * * Do not assume that callbacks you set will _only_ be called in response to * event processing functions like this one. While it is necessary to poll for * events, window systems that require GLFW to register callbacks of its own * can pass events to GLFW in response to many window system function calls. * GLFW will pass those events on to the application callbacks before * returning. * * Event processing is not required for joystick input to work. * * @param[in] timeout The maximum amount of time, in seconds, to wait. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref * GLFW_INVALID_VALUE and @ref GLFW_PLATFORM_ERROR. * * @reentrancy This function must not be called from a callback. * * @thread_safety This function must only be called from the main thread. * * @sa @ref events * @sa @ref glfwPollEvents * @sa @ref glfwWaitEvents * * @since Added in version 3.2. * * @ingroup window */ GLFWAPI void glfwWaitEventsTimeout(double timeout); /*! @brief Posts an empty event to the event queue. * * This function posts an empty event from the current thread to the event * queue, causing @ref glfwWaitEvents or @ref glfwWaitEventsTimeout to return. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_PLATFORM_ERROR. * * @thread_safety This function may be called from any thread. * * @sa @ref events * @sa @ref glfwWaitEvents * @sa @ref glfwWaitEventsTimeout * * @since Added in version 3.1. * * @ingroup window */ GLFWAPI void glfwPostEmptyEvent(void); /*! @brief Returns the value of an input option for the specified window. * * This function returns the value of an input option for the specified window. * The mode must be one of @ref GLFW_CURSOR, @ref GLFW_STICKY_KEYS, * @ref GLFW_STICKY_MOUSE_BUTTONS, @ref GLFW_LOCK_KEY_MODS or * @ref GLFW_RAW_MOUSE_MOTION. * * @param[in] window The window to query. * @param[in] mode One of `GLFW_CURSOR`, `GLFW_STICKY_KEYS`, * `GLFW_STICKY_MOUSE_BUTTONS`, `GLFW_LOCK_KEY_MODS` or * `GLFW_RAW_MOUSE_MOTION`. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_INVALID_ENUM. * * @thread_safety This function must only be called from the main thread. * * @sa @ref glfwSetInputMode * * @since Added in version 3.0. * * @ingroup input */ GLFWAPI int glfwGetInputMode(GLFWwindow* window, int mode); /*! @brief Sets an input option for the specified window. * * This function sets an input mode option for the specified window. The mode * must be one of @ref GLFW_CURSOR, @ref GLFW_STICKY_KEYS, * @ref GLFW_STICKY_MOUSE_BUTTONS, @ref GLFW_LOCK_KEY_MODS * @ref GLFW_RAW_MOUSE_MOTION, or @ref GLFW_UNLIMITED_MOUSE_BUTTONS. * * If the mode is `GLFW_CURSOR`, the value must be one of the following cursor * modes: * - `GLFW_CURSOR_NORMAL` makes the cursor visible and behaving normally. * - `GLFW_CURSOR_HIDDEN` makes the cursor invisible when it is over the * content area of the window but does not restrict the cursor from leaving. * - `GLFW_CURSOR_DISABLED` hides and grabs the cursor, providing virtual * and unlimited cursor movement. This is useful for implementing for * example 3D camera controls. * - `GLFW_CURSOR_CAPTURED` makes the cursor visible and confines it to the * content area of the window. * * If the mode is `GLFW_STICKY_KEYS`, the value must be either `GLFW_TRUE` to * enable sticky keys, or `GLFW_FALSE` to disable it. If sticky keys are * enabled, a key press will ensure that @ref glfwGetKey returns `GLFW_PRESS` * the next time it is called even if the key had been released before the * call. This is useful when you are only interested in whether keys have been * pressed but not when or in which order. * * If the mode is `GLFW_STICKY_MOUSE_BUTTONS`, the value must be either * `GLFW_TRUE` to enable sticky mouse buttons, or `GLFW_FALSE` to disable it. * If sticky mouse buttons are enabled, a mouse button press will ensure that * @ref glfwGetMouseButton returns `GLFW_PRESS` the next time it is called even * if the mouse button had been released before the call. This is useful when * you are only interested in whether mouse buttons have been pressed but not * when or in which order. * * If the mode is `GLFW_LOCK_KEY_MODS`, the value must be either `GLFW_TRUE` to * enable lock key modifier bits, or `GLFW_FALSE` to disable them. If enabled, * callbacks that receive modifier bits will also have the @ref * GLFW_MOD_CAPS_LOCK bit set when the event was generated with Caps Lock on, * and the @ref GLFW_MOD_NUM_LOCK bit when Num Lock was on. * * If the mode is `GLFW_RAW_MOUSE_MOTION`, the value must be either `GLFW_TRUE` * to enable raw (unscaled and unaccelerated) mouse motion when the cursor is * disabled, or `GLFW_FALSE` to disable it. If raw motion is not supported, * attempting to set this will emit @ref GLFW_FEATURE_UNAVAILABLE. Call @ref * glfwRawMouseMotionSupported to check for support. * * If the mode is `GLFW_UNLIMITED_MOUSE_BUTTONS`, the value must be either * `GLFW_TRUE` to disable the mouse button limit when calling the mouse button * callback, or `GLFW_FALSE` to limit the mouse buttons sent to the callback * to the mouse button token values up to `GLFW_MOUSE_BUTTON_LAST`. * * @param[in] window The window whose input mode to set. * @param[in] mode One of `GLFW_CURSOR`, `GLFW_STICKY_KEYS`, * `GLFW_STICKY_MOUSE_BUTTONS`, `GLFW_LOCK_KEY_MODS` or * `GLFW_RAW_MOUSE_MOTION`. * @param[in] value The new value of the specified input mode. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref * GLFW_INVALID_ENUM, @ref GLFW_PLATFORM_ERROR and @ref * GLFW_FEATURE_UNAVAILABLE (see above). * * @thread_safety This function must only be called from the main thread. * * @sa @ref glfwGetInputMode * * @since Added in version 3.0. Replaces `glfwEnable` and `glfwDisable`. * * @ingroup input */ GLFWAPI void glfwSetInputMode(GLFWwindow* window, int mode, int value); /*! @brief Returns whether raw mouse motion is supported. * * This function returns whether raw mouse motion is supported on the current * system. This status does not change after GLFW has been initialized so you * only need to check this once. If you attempt to enable raw motion on * a system that does not support it, @ref GLFW_PLATFORM_ERROR will be emitted. * * Raw mouse motion is closer to the actual motion of the mouse across * a surface. It is not affected by the scaling and acceleration applied to * the motion of the desktop cursor. That processing is suitable for a cursor * while raw motion is better for controlling for example a 3D camera. Because * of this, raw mouse motion is only provided when the cursor is disabled. * * @return `GLFW_TRUE` if raw mouse motion is supported on the current machine, * or `GLFW_FALSE` otherwise. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function must only be called from the main thread. * * @sa @ref raw_mouse_motion * @sa @ref glfwSetInputMode * * @since Added in version 3.3. * * @ingroup input */ GLFWAPI int glfwRawMouseMotionSupported(void); /*! @brief Returns the layout-specific name of the specified printable key. * * This function returns the name of the specified printable key, encoded as * UTF-8. This is typically the character that key would produce without any * modifier keys, intended for displaying key bindings to the user. For dead * keys, it is typically the diacritic it would add to a character. * * __Do not use this function__ for [text input](@ref input_char). You will * break text input for many languages even if it happens to work for yours. * * If the key is `GLFW_KEY_UNKNOWN`, the scancode is used to identify the key, * otherwise the scancode is ignored. If you specify a non-printable key, or * `GLFW_KEY_UNKNOWN` and a scancode that maps to a non-printable key, this * function returns `NULL` but does not emit an error. * * This behavior allows you to always pass in the arguments in the * [key callback](@ref input_key) without modification. * * The printable keys are: * - `GLFW_KEY_APOSTROPHE` * - `GLFW_KEY_COMMA` * - `GLFW_KEY_MINUS` * - `GLFW_KEY_PERIOD` * - `GLFW_KEY_SLASH` * - `GLFW_KEY_SEMICOLON` * - `GLFW_KEY_EQUAL` * - `GLFW_KEY_LEFT_BRACKET` * - `GLFW_KEY_RIGHT_BRACKET` * - `GLFW_KEY_BACKSLASH` * - `GLFW_KEY_WORLD_1` * - `GLFW_KEY_WORLD_2` * - `GLFW_KEY_0` to `GLFW_KEY_9` * - `GLFW_KEY_A` to `GLFW_KEY_Z` * - `GLFW_KEY_KP_0` to `GLFW_KEY_KP_9` * - `GLFW_KEY_KP_DECIMAL` * - `GLFW_KEY_KP_DIVIDE` * - `GLFW_KEY_KP_MULTIPLY` * - `GLFW_KEY_KP_SUBTRACT` * - `GLFW_KEY_KP_ADD` * - `GLFW_KEY_KP_EQUAL` * * Names for printable keys depend on keyboard layout, while names for * non-printable keys are the same across layouts but depend on the application * language and should be localized along with other user interface text. * * @param[in] key The key to query, or `GLFW_KEY_UNKNOWN`. * @param[in] scancode The scancode of the key to query. * @return The UTF-8 encoded, layout-specific name of the key, or `NULL`. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref * GLFW_INVALID_VALUE, @ref GLFW_INVALID_ENUM and @ref GLFW_PLATFORM_ERROR. * * @remark The contents of the returned string may change when a keyboard * layout change event is received. * * @pointer_lifetime The returned string is allocated and freed by GLFW. You * should not free it yourself. It is valid until the library is terminated. * * @thread_safety This function must only be called from the main thread. * * @sa @ref input_key_name * * @since Added in version 3.2. * * @ingroup input */ GLFWAPI const char* glfwGetKeyName(int key, int scancode); /*! @brief Returns the platform-specific scancode of the specified key. * * This function returns the platform-specific scancode of the specified key. * * If the specified [key token](@ref keys) corresponds to a physical key not * supported on the current platform then this method will return `-1`. * Calling this function with anything other than a key token will return `-1` * and generate a @ref GLFW_INVALID_ENUM error. * * @param[in] key Any [key token](@ref keys). * @return The platform-specific scancode for the key, or `-1` if the key is * not supported on the current platform or an [error](@ref error_handling) * occurred. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_INVALID_ENUM. * * @thread_safety This function may be called from any thread. * * @sa @ref input_key * * @since Added in version 3.3. * * @ingroup input */ GLFWAPI int glfwGetKeyScancode(int key); /*! @brief Returns the last reported state of a keyboard key for the specified * window. * * This function returns the last state reported for the specified key to the * specified window. The returned state is one of `GLFW_PRESS` or * `GLFW_RELEASE`. The action `GLFW_REPEAT` is only reported to the key callback. * * If the @ref GLFW_STICKY_KEYS input mode is enabled, this function returns * `GLFW_PRESS` the first time you call it for a key that was pressed, even if * that key has already been released. * * The key functions deal with physical keys, with [key tokens](@ref keys) * named after their use on the standard US keyboard layout. If you want to * input text, use the Unicode character callback instead. * * The [modifier key bit masks](@ref mods) are not key tokens and cannot be * used with this function. * * __Do not use this function__ to implement [text input](@ref input_char). * * @param[in] window The desired window. * @param[in] key The desired [keyboard key](@ref keys). `GLFW_KEY_UNKNOWN` is * not a valid key for this function. * @return One of `GLFW_PRESS` or `GLFW_RELEASE`. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_INVALID_ENUM. * * @thread_safety This function must only be called from the main thread. * * @sa @ref input_key * * @since Added in version 1.0. * @glfw3 Added window handle parameter. * * @ingroup input */ GLFWAPI int glfwGetKey(GLFWwindow* window, int key); /*! @brief Returns the last reported state of a mouse button for the specified * window. * * This function returns the last state reported for the specified mouse button * to the specified window. The returned state is one of `GLFW_PRESS` or * `GLFW_RELEASE`. * * If the @ref GLFW_STICKY_MOUSE_BUTTONS input mode is enabled, this function * returns `GLFW_PRESS` the first time you call it for a mouse button that was * pressed, even if that mouse button has already been released. * * The @ref GLFW_UNLIMITED_MOUSE_BUTTONS input mode does not effect the * limit on buttons which can be polled with this function. * * @param[in] window The desired window. * @param[in] button The desired [mouse button token](@ref buttons). * @return One of `GLFW_PRESS` or `GLFW_RELEASE`. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_INVALID_ENUM. * * @thread_safety This function must only be called from the main thread. * * @sa @ref input_mouse_button * * @since Added in version 1.0. * @glfw3 Added window handle parameter. * * @ingroup input */ GLFWAPI int glfwGetMouseButton(GLFWwindow* window, int button); /*! @brief Retrieves the position of the cursor relative to the content area of * the window. * * This function returns the position of the cursor, in screen coordinates, * relative to the upper-left corner of the content area of the specified * window. * * If the cursor is disabled (with `GLFW_CURSOR_DISABLED`) then the cursor * position is unbounded and limited only by the minimum and maximum values of * a `double`. * * The coordinate can be converted to their integer equivalents with the * `floor` function. Casting directly to an integer type works for positive * coordinates, but fails for negative ones. * * Any or all of the position arguments may be `NULL`. If an error occurs, all * non-`NULL` position arguments will be set to zero. * * @param[in] window The desired window. * @param[out] xpos Where to store the cursor x-coordinate, relative to the * left edge of the content area, or `NULL`. * @param[out] ypos Where to store the cursor y-coordinate, relative to the to * top edge of the content area, or `NULL`. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_PLATFORM_ERROR. * * @thread_safety This function must only be called from the main thread. * * @sa @ref cursor_pos * @sa @ref glfwSetCursorPos * * @since Added in version 3.0. Replaces `glfwGetMousePos`. * * @ingroup input */ GLFWAPI void glfwGetCursorPos(GLFWwindow* window, double* xpos, double* ypos); /*! @brief Sets the position of the cursor, relative to the content area of the * window. * * This function sets the position, in screen coordinates, of the cursor * relative to the upper-left corner of the content area of the specified * window. The window must have input focus. If the window does not have * input focus when this function is called, it fails silently. * * __Do not use this function__ to implement things like camera controls. GLFW * already provides the `GLFW_CURSOR_DISABLED` cursor mode that hides the * cursor, transparently re-centers it and provides unconstrained cursor * motion. See @ref glfwSetInputMode for more information. * * If the cursor mode is `GLFW_CURSOR_DISABLED` then the cursor position is * unconstrained and limited only by the minimum and maximum values of * a `double`. * * @param[in] window The desired window. * @param[in] xpos The desired x-coordinate, relative to the left edge of the * content area. * @param[in] ypos The desired y-coordinate, relative to the top edge of the * content area. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref * GLFW_PLATFORM_ERROR and @ref GLFW_FEATURE_UNAVAILABLE (see remarks). * * @remark @wayland This function will only work when the cursor mode is * `GLFW_CURSOR_DISABLED`, otherwise it will emit @ref GLFW_FEATURE_UNAVAILABLE. * * @thread_safety This function must only be called from the main thread. * * @sa @ref cursor_pos * @sa @ref glfwGetCursorPos * * @since Added in version 3.0. Replaces `glfwSetMousePos`. * * @ingroup input */ GLFWAPI void glfwSetCursorPos(GLFWwindow* window, double xpos, double ypos); /*! @brief Creates a custom cursor. * * Creates a new custom cursor image that can be set for a window with @ref * glfwSetCursor. The cursor can be destroyed with @ref glfwDestroyCursor. * Any remaining cursors are destroyed by @ref glfwTerminate. * * The pixels are 32-bit, little-endian, non-premultiplied RGBA, i.e. eight * bits per channel with the red channel first. They are arranged canonically * as packed sequential rows, starting from the top-left corner. * * The cursor hotspot is specified in pixels, relative to the upper-left corner * of the cursor image. Like all other coordinate systems in GLFW, the X-axis * points to the right and the Y-axis points down. * * @param[in] image The desired cursor image. * @param[in] xhot The desired x-coordinate, in pixels, of the cursor hotspot. * @param[in] yhot The desired y-coordinate, in pixels, of the cursor hotspot. * @return The handle of the created cursor, or `NULL` if an * [error](@ref error_handling) occurred. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref * GLFW_INVALID_VALUE and @ref GLFW_PLATFORM_ERROR. * * @pointer_lifetime The specified image data is copied before this function * returns. * * @thread_safety This function must only be called from the main thread. * * @sa @ref cursor_object * @sa @ref glfwDestroyCursor * @sa @ref glfwCreateStandardCursor * * @since Added in version 3.1. * * @ingroup input */ GLFWAPI GLFWcursor* glfwCreateCursor(const GLFWimage* image, int xhot, int yhot); /*! @brief Creates a cursor with a standard shape. * * Returns a cursor with a standard shape, that can be set for a window with * @ref glfwSetCursor. The images for these cursors come from the system * cursor theme and their exact appearance will vary between platforms. * * Most of these shapes are guaranteed to exist on every supported platform but * a few may not be present. See the table below for details. * * Cursor shape | Windows | macOS | X11 | Wayland * ------------------------------ | ------- | ----- | ------ | ------- * @ref GLFW_ARROW_CURSOR | Yes | Yes | Yes | Yes * @ref GLFW_IBEAM_CURSOR | Yes | Yes | Yes | Yes * @ref GLFW_CROSSHAIR_CURSOR | Yes | Yes | Yes | Yes * @ref GLFW_POINTING_HAND_CURSOR | Yes | Yes | Yes | Yes * @ref GLFW_RESIZE_EW_CURSOR | Yes | Yes | Yes | Yes * @ref GLFW_RESIZE_NS_CURSOR | Yes | Yes | Yes | Yes * @ref GLFW_RESIZE_NWSE_CURSOR | Yes | Yes<sup>1</sup> | Maybe<sup>2</sup> | Maybe<sup>2</sup> * @ref GLFW_RESIZE_NESW_CURSOR | Yes | Yes<sup>1</sup> | Maybe<sup>2</sup> | Maybe<sup>2</sup> * @ref GLFW_RESIZE_ALL_CURSOR | Yes | Yes | Yes | Yes * @ref GLFW_NOT_ALLOWED_CURSOR | Yes | Yes | Maybe<sup>2</sup> | Maybe<sup>2</sup> * * 1) This uses a private system API and may fail in the future. * * 2) This uses a newer standard that not all cursor themes support. * * If the requested shape is not available, this function emits a @ref * GLFW_CURSOR_UNAVAILABLE error and returns `NULL`. * * @param[in] shape One of the [standard shapes](@ref shapes). * @return A new cursor ready to use or `NULL` if an * [error](@ref error_handling) occurred. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref * GLFW_INVALID_ENUM, @ref GLFW_CURSOR_UNAVAILABLE and @ref * GLFW_PLATFORM_ERROR. * * @thread_safety This function must only be called from the main thread. * * @sa @ref cursor_standard * @sa @ref glfwCreateCursor * * @since Added in version 3.1. * * @ingroup input */ GLFWAPI GLFWcursor* glfwCreateStandardCursor(int shape); /*! @brief Destroys a cursor. * * This function destroys a cursor previously created with @ref * glfwCreateCursor. Any remaining cursors will be destroyed by @ref * glfwTerminate. * * If the specified cursor is current for any window, that window will be * reverted to the default cursor. This does not affect the cursor mode. * * @param[in] cursor The cursor object to destroy. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_PLATFORM_ERROR. * * @reentrancy This function must not be called from a callback. * * @thread_safety This function must only be called from the main thread. * * @sa @ref cursor_object * @sa @ref glfwCreateCursor * * @since Added in version 3.1. * * @ingroup input */ GLFWAPI void glfwDestroyCursor(GLFWcursor* cursor); /*! @brief Sets the cursor for the window. * * This function sets the cursor image to be used when the cursor is over the * content area of the specified window. The set cursor will only be visible * when the [cursor mode](@ref cursor_mode) of the window is * `GLFW_CURSOR_NORMAL`. * * On some platforms, the set cursor may not be visible unless the window also * has input focus. * * @param[in] window The window to set the cursor for. * @param[in] cursor The cursor to set, or `NULL` to switch back to the default * arrow cursor. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_PLATFORM_ERROR. * * @thread_safety This function must only be called from the main thread. * * @sa @ref cursor_object * * @since Added in version 3.1. * * @ingroup input */ GLFWAPI void glfwSetCursor(GLFWwindow* window, GLFWcursor* cursor); /*! @brief Sets the key callback. * * This function sets the key callback of the specified window, which is called * when a key is pressed, repeated or released. * * The key functions deal with physical keys, with layout independent * [key tokens](@ref keys) named after their values in the standard US keyboard * layout. If you want to input text, use the * [character callback](@ref glfwSetCharCallback) instead. * * When a window loses input focus, it will generate synthetic key release * events for all pressed keys with associated key tokens. You can tell these * events from user-generated events by the fact that the synthetic ones are * generated after the focus loss event has been processed, i.e. after the * [window focus callback](@ref glfwSetWindowFocusCallback) has been called. * * The scancode of a key is specific to that platform or sometimes even to that * machine. Scancodes are intended to allow users to bind keys that don't have * a GLFW key token. Such keys have `key` set to `GLFW_KEY_UNKNOWN`, their * state is not saved and so it cannot be queried with @ref glfwGetKey. * * Sometimes GLFW needs to generate synthetic key events, in which case the * scancode may be zero. * * @param[in] window The window whose callback to set. * @param[in] callback The new key callback, or `NULL` to remove the currently * set callback. * @return The previously set callback, or `NULL` if no callback was set or the * library had not been [initialized](@ref intro_init). * * @callback_signature * @code * void function_name(GLFWwindow* window, int key, int scancode, int action, int mods) * @endcode * For more information about the callback parameters, see the * [function pointer type](@ref GLFWkeyfun). * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function must only be called from the main thread. * * @sa @ref input_key * * @since Added in version 1.0. * @glfw3 Added window handle parameter and return value. * * @ingroup input */ GLFWAPI GLFWkeyfun glfwSetKeyCallback(GLFWwindow* window, GLFWkeyfun callback); /*! @brief Sets the Unicode character callback. * * This function sets the character callback of the specified window, which is * called when a Unicode character is input. * * The character callback is intended for Unicode text input. As it deals with * characters, it is keyboard layout dependent, whereas the * [key callback](@ref glfwSetKeyCallback) is not. Characters do not map 1:1 * to physical keys, as a key may produce zero, one or more characters. If you * want to know whether a specific physical key was pressed or released, see * the key callback instead. * * The character callback behaves as system text input normally does and will * not be called if modifier keys are held down that would prevent normal text * input on that platform, for example a Super (Command) key on macOS or Alt key * on Windows. * * @param[in] window The window whose callback to set. * @param[in] callback The new callback, or `NULL` to remove the currently set * callback. * @return The previously set callback, or `NULL` if no callback was set or the * library had not been [initialized](@ref intro_init). * * @callback_signature * @code * void function_name(GLFWwindow* window, unsigned int codepoint) * @endcode * For more information about the callback parameters, see the * [function pointer type](@ref GLFWcharfun). * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function must only be called from the main thread. * * @sa @ref input_char * * @since Added in version 2.4. * @glfw3 Added window handle parameter and return value. * * @ingroup input */ GLFWAPI GLFWcharfun glfwSetCharCallback(GLFWwindow* window, GLFWcharfun callback); /*! @brief Sets the Unicode character with modifiers callback. * * This function sets the character with modifiers callback of the specified * window, which is called when a Unicode character is input regardless of what * modifier keys are used. * * The character with modifiers callback is intended for implementing custom * Unicode character input. For regular Unicode text input, see the * [character callback](@ref glfwSetCharCallback). Like the character * callback, the character with modifiers callback deals with characters and is * keyboard layout dependent. Characters do not map 1:1 to physical keys, as * a key may produce zero, one or more characters. If you want to know whether * a specific physical key was pressed or released, see the * [key callback](@ref glfwSetKeyCallback) instead. * * @param[in] window The window whose callback to set. * @param[in] callback The new callback, or `NULL` to remove the currently set * callback. * @return The previously set callback, or `NULL` if no callback was set or an * [error](@ref error_handling) occurred. * * @callback_signature * @code * void function_name(GLFWwindow* window, unsigned int codepoint, int mods) * @endcode * For more information about the callback parameters, see the * [function pointer type](@ref GLFWcharmodsfun). * * @deprecated Scheduled for removal in version 4.0. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function must only be called from the main thread. * * @sa @ref input_char * * @since Added in version 3.1. * * @ingroup input */ GLFWAPI GLFWcharmodsfun glfwSetCharModsCallback(GLFWwindow* window, GLFWcharmodsfun callback); /*! @brief Sets the mouse button callback. * * This function sets the mouse button callback of the specified window, which * is called when a mouse button is pressed or released. * * When a window loses input focus, it will generate synthetic mouse button * release events for all pressed mouse buttons with associated button tokens. * You can tell these events from user-generated events by the fact that the * synthetic ones are generated after the focus loss event has been processed, * i.e. after the [window focus callback](@ref glfwSetWindowFocusCallback) has * been called. * * The reported `button` value can be higher than `GLFW_MOUSE_BUTTON_LAST` if * the button does not have an associated [button token](@ref buttons) and the * @ref GLFW_UNLIMITED_MOUSE_BUTTONS input mode is set. * * @param[in] window The window whose callback to set. * @param[in] callback The new callback, or `NULL` to remove the currently set * callback. * @return The previously set callback, or `NULL` if no callback was set or the * library had not been [initialized](@ref intro_init). * * @callback_signature * @code * void function_name(GLFWwindow* window, int button, int action, int mods) * @endcode * For more information about the callback parameters, see the * [function pointer type](@ref GLFWmousebuttonfun). * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function must only be called from the main thread. * * @sa @ref input_mouse_button * * @since Added in version 1.0. * @glfw3 Added window handle parameter and return value. * * @ingroup input */ GLFWAPI GLFWmousebuttonfun glfwSetMouseButtonCallback(GLFWwindow* window, GLFWmousebuttonfun callback); /*! @brief Sets the cursor position callback. * * This function sets the cursor position callback of the specified window, * which is called when the cursor is moved. The callback is provided with the * position, in screen coordinates, relative to the upper-left corner of the * content area of the window. * * @param[in] window The window whose callback to set. * @param[in] callback The new callback, or `NULL` to remove the currently set * callback. * @return The previously set callback, or `NULL` if no callback was set or the * library had not been [initialized](@ref intro_init). * * @callback_signature * @code * void function_name(GLFWwindow* window, double xpos, double ypos); * @endcode * For more information about the callback parameters, see the * [function pointer type](@ref GLFWcursorposfun). * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function must only be called from the main thread. * * @sa @ref cursor_pos * * @since Added in version 3.0. Replaces `glfwSetMousePosCallback`. * * @ingroup input */ GLFWAPI GLFWcursorposfun glfwSetCursorPosCallback(GLFWwindow* window, GLFWcursorposfun callback); /*! @brief Sets the cursor enter/leave callback. * * This function sets the cursor boundary crossing callback of the specified * window, which is called when the cursor enters or leaves the content area of * the window. * * @param[in] window The window whose callback to set. * @param[in] callback The new callback, or `NULL` to remove the currently set * callback. * @return The previously set callback, or `NULL` if no callback was set or the * library had not been [initialized](@ref intro_init). * * @callback_signature * @code * void function_name(GLFWwindow* window, int entered) * @endcode * For more information about the callback parameters, see the * [function pointer type](@ref GLFWcursorenterfun). * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function must only be called from the main thread. * * @sa @ref cursor_enter * * @since Added in version 3.0. * * @ingroup input */ GLFWAPI GLFWcursorenterfun glfwSetCursorEnterCallback(GLFWwindow* window, GLFWcursorenterfun callback); /*! @brief Sets the scroll callback. * * This function sets the scroll callback of the specified window, which is * called when a scrolling device is used, such as a mouse wheel or scrolling * area of a touchpad. * * The scroll callback receives all scrolling input, like that from a mouse * wheel or a touchpad scrolling area. * * @param[in] window The window whose callback to set. * @param[in] callback The new scroll callback, or `NULL` to remove the * currently set callback. * @return The previously set callback, or `NULL` if no callback was set or the * library had not been [initialized](@ref intro_init). * * @callback_signature * @code * void function_name(GLFWwindow* window, double xoffset, double yoffset) * @endcode * For more information about the callback parameters, see the * [function pointer type](@ref GLFWscrollfun). * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function must only be called from the main thread. * * @sa @ref scrolling * * @since Added in version 3.0. Replaces `glfwSetMouseWheelCallback`. * * @ingroup input */ GLFWAPI GLFWscrollfun glfwSetScrollCallback(GLFWwindow* window, GLFWscrollfun callback); /*! @brief Sets the path drop callback. * * This function sets the path drop callback of the specified window, which is * called when one or more dragged paths are dropped on the window. * * Because the path array and its strings may have been generated specifically * for that event, they are not guaranteed to be valid after the callback has * returned. If you wish to use them after the callback returns, you need to * make a deep copy. * * @param[in] window The window whose callback to set. * @param[in] callback The new file drop callback, or `NULL` to remove the * currently set callback. * @return The previously set callback, or `NULL` if no callback was set or the * library had not been [initialized](@ref intro_init). * * @callback_signature * @code * void function_name(GLFWwindow* window, int path_count, const char* paths[]) * @endcode * For more information about the callback parameters, see the * [function pointer type](@ref GLFWdropfun). * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function must only be called from the main thread. * * @sa @ref path_drop * * @since Added in version 3.1. * * @ingroup input */ GLFWAPI GLFWdropfun glfwSetDropCallback(GLFWwindow* window, GLFWdropfun callback); /*! @brief Returns whether the specified joystick is present. * * This function returns whether the specified joystick is present. * * There is no need to call this function before other functions that accept * a joystick ID, as they all check for presence before performing any other * work. * * @param[in] jid The [joystick](@ref joysticks) to query. * @return `GLFW_TRUE` if the joystick is present, or `GLFW_FALSE` otherwise. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref * GLFW_INVALID_ENUM and @ref GLFW_PLATFORM_ERROR. * * @thread_safety This function must only be called from the main thread. * * @sa @ref joystick * * @since Added in version 3.0. Replaces `glfwGetJoystickParam`. * * @ingroup input */ GLFWAPI int glfwJoystickPresent(int jid); /*! @brief Returns the values of all axes of the specified joystick. * * This function returns the values of all axes of the specified joystick. * Each element in the array is a value between -1.0 and 1.0. * * If the specified joystick is not present this function will return `NULL` * but will not generate an error. This can be used instead of first calling * @ref glfwJoystickPresent. * * @param[in] jid The [joystick](@ref joysticks) to query. * @param[out] count Where to store the number of axis values in the returned * array. This is set to zero if the joystick is not present or an error * occurred. * @return An array of axis values, or `NULL` if the joystick is not present or * an [error](@ref error_handling) occurred. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref * GLFW_INVALID_ENUM and @ref GLFW_PLATFORM_ERROR. * * @pointer_lifetime The returned array is allocated and freed by GLFW. You * should not free it yourself. It is valid until the specified joystick is * disconnected or the library is terminated. * * @thread_safety This function must only be called from the main thread. * * @sa @ref joystick_axis * * @since Added in version 3.0. Replaces `glfwGetJoystickPos`. * * @ingroup input */ GLFWAPI const float* glfwGetJoystickAxes(int jid, int* count); /*! @brief Returns the state of all buttons of the specified joystick. * * This function returns the state of all buttons of the specified joystick. * Each element in the array is either `GLFW_PRESS` or `GLFW_RELEASE`. * * For backward compatibility with earlier versions that did not have @ref * glfwGetJoystickHats, the button array also includes all hats, each * represented as four buttons. The hats are in the same order as returned by * __glfwGetJoystickHats__ and are in the order _up_, _right_, _down_ and * _left_. To disable these extra buttons, set the @ref * GLFW_JOYSTICK_HAT_BUTTONS init hint before initialization. * * If the specified joystick is not present this function will return `NULL` * but will not generate an error. This can be used instead of first calling * @ref glfwJoystickPresent. * * @param[in] jid The [joystick](@ref joysticks) to query. * @param[out] count Where to store the number of button states in the returned * array. This is set to zero if the joystick is not present or an error * occurred. * @return An array of button states, or `NULL` if the joystick is not present * or an [error](@ref error_handling) occurred. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref * GLFW_INVALID_ENUM and @ref GLFW_PLATFORM_ERROR. * * @pointer_lifetime The returned array is allocated and freed by GLFW. You * should not free it yourself. It is valid until the specified joystick is * disconnected or the library is terminated. * * @thread_safety This function must only be called from the main thread. * * @sa @ref joystick_button * * @since Added in version 2.2. * @glfw3 Changed to return a dynamic array. * * @ingroup input */ GLFWAPI const unsigned char* glfwGetJoystickButtons(int jid, int* count); /*! @brief Returns the state of all hats of the specified joystick. * * This function returns the state of all hats of the specified joystick. * Each element in the array is one of the following values: * * Name | Value * ---- | ----- * `GLFW_HAT_CENTERED` | 0 * `GLFW_HAT_UP` | 1 * `GLFW_HAT_RIGHT` | 2 * `GLFW_HAT_DOWN` | 4 * `GLFW_HAT_LEFT` | 8 * `GLFW_HAT_RIGHT_UP` | `GLFW_HAT_RIGHT` \| `GLFW_HAT_UP` * `GLFW_HAT_RIGHT_DOWN` | `GLFW_HAT_RIGHT` \| `GLFW_HAT_DOWN` * `GLFW_HAT_LEFT_UP` | `GLFW_HAT_LEFT` \| `GLFW_HAT_UP` * `GLFW_HAT_LEFT_DOWN` | `GLFW_HAT_LEFT` \| `GLFW_HAT_DOWN` * * The diagonal directions are bitwise combinations of the primary (up, right, * down and left) directions and you can test for these individually by ANDing * it with the corresponding direction. * * @code * if (hats[2] & GLFW_HAT_RIGHT) * { * // State of hat 2 could be right-up, right or right-down * } * @endcode * * If the specified joystick is not present this function will return `NULL` * but will not generate an error. This can be used instead of first calling * @ref glfwJoystickPresent. * * @param[in] jid The [joystick](@ref joysticks) to query. * @param[out] count Where to store the number of hat states in the returned * array. This is set to zero if the joystick is not present or an error * occurred. * @return An array of hat states, or `NULL` if the joystick is not present * or an [error](@ref error_handling) occurred. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref * GLFW_INVALID_ENUM and @ref GLFW_PLATFORM_ERROR. * * @pointer_lifetime The returned array is allocated and freed by GLFW. You * should not free it yourself. It is valid until the specified joystick is * disconnected, this function is called again for that joystick or the library * is terminated. * * @thread_safety This function must only be called from the main thread. * * @sa @ref joystick_hat * * @since Added in version 3.3. * * @ingroup input */ GLFWAPI const unsigned char* glfwGetJoystickHats(int jid, int* count); /*! @brief Returns the name of the specified joystick. * * This function returns the name, encoded as UTF-8, of the specified joystick. * The returned string is allocated and freed by GLFW. You should not free it * yourself. * * If the specified joystick is not present this function will return `NULL` * but will not generate an error. This can be used instead of first calling * @ref glfwJoystickPresent. * * @param[in] jid The [joystick](@ref joysticks) to query. * @return The UTF-8 encoded name of the joystick, or `NULL` if the joystick * is not present or an [error](@ref error_handling) occurred. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref * GLFW_INVALID_ENUM and @ref GLFW_PLATFORM_ERROR. * * @pointer_lifetime The returned string is allocated and freed by GLFW. You * should not free it yourself. It is valid until the specified joystick is * disconnected or the library is terminated. * * @thread_safety This function must only be called from the main thread. * * @sa @ref joystick_name * * @since Added in version 3.0. * * @ingroup input */ GLFWAPI const char* glfwGetJoystickName(int jid); /*! @brief Returns the SDL compatible GUID of the specified joystick. * * This function returns the SDL compatible GUID, as a UTF-8 encoded * hexadecimal string, of the specified joystick. The returned string is * allocated and freed by GLFW. You should not free it yourself. * * The GUID is what connects a joystick to a gamepad mapping. A connected * joystick will always have a GUID even if there is no gamepad mapping * assigned to it. * * If the specified joystick is not present this function will return `NULL` * but will not generate an error. This can be used instead of first calling * @ref glfwJoystickPresent. * * The GUID uses the format introduced in SDL 2.0.5. This GUID tries to * uniquely identify the make and model of a joystick but does not identify * a specific unit, e.g. all wired Xbox 360 controllers will have the same * GUID on that platform. The GUID for a unit may vary between platforms * depending on what hardware information the platform specific APIs provide. * * @param[in] jid The [joystick](@ref joysticks) to query. * @return The UTF-8 encoded GUID of the joystick, or `NULL` if the joystick * is not present or an [error](@ref error_handling) occurred. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref * GLFW_INVALID_ENUM and @ref GLFW_PLATFORM_ERROR. * * @pointer_lifetime The returned string is allocated and freed by GLFW. You * should not free it yourself. It is valid until the specified joystick is * disconnected or the library is terminated. * * @thread_safety This function must only be called from the main thread. * * @sa @ref gamepad * * @since Added in version 3.3. * * @ingroup input */ GLFWAPI const char* glfwGetJoystickGUID(int jid); /*! @brief Sets the user pointer of the specified joystick. * * This function sets the user-defined pointer of the specified joystick. The * current value is retained until the joystick is disconnected. The initial * value is `NULL`. * * This function may be called from the joystick callback, even for a joystick * that is being disconnected. * * @param[in] jid The joystick whose pointer to set. * @param[in] pointer The new value. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function may be called from any thread. Access is not * synchronized. * * @sa @ref joystick_userptr * @sa @ref glfwGetJoystickUserPointer * * @since Added in version 3.3. * * @ingroup input */ GLFWAPI void glfwSetJoystickUserPointer(int jid, void* pointer); /*! @brief Returns the user pointer of the specified joystick. * * This function returns the current value of the user-defined pointer of the * specified joystick. The initial value is `NULL`. * * This function may be called from the joystick callback, even for a joystick * that is being disconnected. * * @param[in] jid The joystick whose pointer to return. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function may be called from any thread. Access is not * synchronized. * * @sa @ref joystick_userptr * @sa @ref glfwSetJoystickUserPointer * * @since Added in version 3.3. * * @ingroup input */ GLFWAPI void* glfwGetJoystickUserPointer(int jid); /*! @brief Returns whether the specified joystick has a gamepad mapping. * * This function returns whether the specified joystick is both present and has * a gamepad mapping. * * If the specified joystick is present but does not have a gamepad mapping * this function will return `GLFW_FALSE` but will not generate an error. Call * @ref glfwJoystickPresent to check if a joystick is present regardless of * whether it has a mapping. * * @param[in] jid The [joystick](@ref joysticks) to query. * @return `GLFW_TRUE` if a joystick is both present and has a gamepad mapping, * or `GLFW_FALSE` otherwise. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_INVALID_ENUM. * * @thread_safety This function must only be called from the main thread. * * @sa @ref gamepad * @sa @ref glfwGetGamepadState * * @since Added in version 3.3. * * @ingroup input */ GLFWAPI int glfwJoystickIsGamepad(int jid); /*! @brief Sets the joystick configuration callback. * * This function sets the joystick configuration callback, or removes the * currently set callback. This is called when a joystick is connected to or * disconnected from the system. * * For joystick connection and disconnection events to be delivered on all * platforms, you need to call one of the [event processing](@ref events) * functions. Joystick disconnection may also be detected and the callback * called by joystick functions. The function will then return whatever it * returns if the joystick is not present. * * @param[in] callback The new callback, or `NULL` to remove the currently set * callback. * @return The previously set callback, or `NULL` if no callback was set or the * library had not been [initialized](@ref intro_init). * * @callback_signature * @code * void function_name(int jid, int event) * @endcode * For more information about the callback parameters, see the * [function pointer type](@ref GLFWjoystickfun). * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function must only be called from the main thread. * * @sa @ref joystick_event * * @since Added in version 3.2. * * @ingroup input */ GLFWAPI GLFWjoystickfun glfwSetJoystickCallback(GLFWjoystickfun callback); /*! @brief Adds the specified SDL_GameControllerDB gamepad mappings. * * This function parses the specified ASCII encoded string and updates the * internal list with any gamepad mappings it finds. This string may * contain either a single gamepad mapping or many mappings separated by * newlines. The parser supports the full format of the `gamecontrollerdb.txt` * source file including empty lines and comments. * * See @ref gamepad_mapping for a description of the format. * * If there is already a gamepad mapping for a given GUID in the internal list, * it will be replaced by the one passed to this function. If the library is * terminated and re-initialized the internal list will revert to the built-in * default. * * @param[in] string The string containing the gamepad mappings. * @return `GLFW_TRUE` if successful, or `GLFW_FALSE` if an * [error](@ref error_handling) occurred. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_INVALID_VALUE. * * @thread_safety This function must only be called from the main thread. * * @sa @ref gamepad * @sa @ref glfwJoystickIsGamepad * @sa @ref glfwGetGamepadName * * @since Added in version 3.3. * * @ingroup input */ GLFWAPI int glfwUpdateGamepadMappings(const char* string); /*! @brief Returns the human-readable gamepad name for the specified joystick. * * This function returns the human-readable name of the gamepad from the * gamepad mapping assigned to the specified joystick. * * If the specified joystick is not present or does not have a gamepad mapping * this function will return `NULL` but will not generate an error. Call * @ref glfwJoystickPresent to check whether it is present regardless of * whether it has a mapping. * * @param[in] jid The [joystick](@ref joysticks) to query. * @return The UTF-8 encoded name of the gamepad, or `NULL` if the * joystick is not present, does not have a mapping or an * [error](@ref error_handling) occurred. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref GLFW_INVALID_ENUM. * * @pointer_lifetime The returned string is allocated and freed by GLFW. You * should not free it yourself. It is valid until the specified joystick is * disconnected, the gamepad mappings are updated or the library is terminated. * * @thread_safety This function must only be called from the main thread. * * @sa @ref gamepad * @sa @ref glfwJoystickIsGamepad * * @since Added in version 3.3. * * @ingroup input */ GLFWAPI const char* glfwGetGamepadName(int jid); /*! @brief Retrieves the state of the specified joystick remapped as a gamepad. * * This function retrieves the state of the specified joystick remapped to * an Xbox-like gamepad. * * If the specified joystick is not present or does not have a gamepad mapping * this function will return `GLFW_FALSE` but will not generate an error. Call * @ref glfwJoystickPresent to check whether it is present regardless of * whether it has a mapping. * * The Guide button may not be available for input as it is often hooked by the * system or the Steam client. * * Not all devices have all the buttons or axes provided by @ref * GLFWgamepadstate. Unavailable buttons and axes will always report * `GLFW_RELEASE` and 0.0 respectively. * * @param[in] jid The [joystick](@ref joysticks) to query. * @param[out] state The gamepad input state of the joystick. * @return `GLFW_TRUE` if successful, or `GLFW_FALSE` if no joystick is * connected, it has no gamepad mapping or an [error](@ref error_handling) * occurred. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_INVALID_ENUM. * * @thread_safety This function must only be called from the main thread. * * @sa @ref gamepad * @sa @ref glfwUpdateGamepadMappings * @sa @ref glfwJoystickIsGamepad * * @since Added in version 3.3. * * @ingroup input */ GLFWAPI int glfwGetGamepadState(int jid, GLFWgamepadstate* state); /*! @brief Sets the clipboard to the specified string. * * This function sets the system clipboard to the specified, UTF-8 encoded * string. * * @param[in] window Deprecated. Any valid window or `NULL`. * @param[in] string A UTF-8 encoded string. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_PLATFORM_ERROR. * * @remark @win32 The clipboard on Windows has a single global lock for reading and * writing. GLFW tries to acquire it a few times, which is almost always enough. If it * cannot acquire the lock then this function emits @ref GLFW_PLATFORM_ERROR and returns. * It is safe to try this multiple times. * * @pointer_lifetime The specified string is copied before this function * returns. * * @thread_safety This function must only be called from the main thread. * * @sa @ref clipboard * @sa @ref glfwGetClipboardString * * @since Added in version 3.0. * * @ingroup input */ GLFWAPI void glfwSetClipboardString(GLFWwindow* window, const char* string); /*! @brief Returns the contents of the clipboard as a string. * * This function returns the contents of the system clipboard, if it contains * or is convertible to a UTF-8 encoded string. If the clipboard is empty or * if its contents cannot be converted, `NULL` is returned and a @ref * GLFW_FORMAT_UNAVAILABLE error is generated. * * @param[in] window Deprecated. Any valid window or `NULL`. * @return The contents of the clipboard as a UTF-8 encoded string, or `NULL` * if an [error](@ref error_handling) occurred. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref * GLFW_FORMAT_UNAVAILABLE and @ref GLFW_PLATFORM_ERROR. * * @remark @win32 The clipboard on Windows has a single global lock for reading and * writing. GLFW tries to acquire it a few times, which is almost always enough. If it * cannot acquire the lock then this function emits @ref GLFW_PLATFORM_ERROR and returns. * It is safe to try this multiple times. * * @pointer_lifetime The returned string is allocated and freed by GLFW. You * should not free it yourself. It is valid until the next call to @ref * glfwGetClipboardString or @ref glfwSetClipboardString, or until the library * is terminated. * * @thread_safety This function must only be called from the main thread. * * @sa @ref clipboard * @sa @ref glfwSetClipboardString * * @since Added in version 3.0. * * @ingroup input */ GLFWAPI const char* glfwGetClipboardString(GLFWwindow* window); /*! @brief Returns the GLFW time. * * This function returns the current GLFW time, in seconds. Unless the time * has been set using @ref glfwSetTime it measures time elapsed since GLFW was * initialized. * * This function and @ref glfwSetTime are helper functions on top of @ref * glfwGetTimerFrequency and @ref glfwGetTimerValue. * * The resolution of the timer is system dependent, but is usually on the order * of a few micro- or nanoseconds. It uses the highest-resolution monotonic * time source on each operating system. * * @return The current time, in seconds, or zero if an * [error](@ref error_handling) occurred. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function may be called from any thread. Reading and * writing of the internal base time is not atomic, so it needs to be * externally synchronized with calls to @ref glfwSetTime. * * @sa @ref time * * @since Added in version 1.0. * * @ingroup input */ GLFWAPI double glfwGetTime(void); /*! @brief Sets the GLFW time. * * This function sets the current GLFW time, in seconds. The value must be * a positive finite number less than or equal to 18446744073.0, which is * approximately 584.5 years. * * This function and @ref glfwGetTime are helper functions on top of @ref * glfwGetTimerFrequency and @ref glfwGetTimerValue. * * @param[in] time The new value, in seconds. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_INVALID_VALUE. * * @remark The upper limit of GLFW time is calculated as * floor((2<sup>64</sup> - 1) / 10<sup>9</sup>) and is due to implementations * storing nanoseconds in 64 bits. The limit may be increased in the future. * * @thread_safety This function may be called from any thread. Reading and * writing of the internal base time is not atomic, so it needs to be * externally synchronized with calls to @ref glfwGetTime. * * @sa @ref time * * @since Added in version 2.2. * * @ingroup input */ GLFWAPI void glfwSetTime(double time); /*! @brief Returns the current value of the raw timer. * * This function returns the current value of the raw timer, measured in * 1 / frequency seconds. To get the frequency, call @ref * glfwGetTimerFrequency. * * @return The value of the timer, or zero if an * [error](@ref error_handling) occurred. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function may be called from any thread. * * @sa @ref time * @sa @ref glfwGetTimerFrequency * * @since Added in version 3.2. * * @ingroup input */ GLFWAPI uint64_t glfwGetTimerValue(void); /*! @brief Returns the frequency, in Hz, of the raw timer. * * This function returns the frequency, in Hz, of the raw timer. * * @return The frequency of the timer, in Hz, or zero if an * [error](@ref error_handling) occurred. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function may be called from any thread. * * @sa @ref time * @sa @ref glfwGetTimerValue * * @since Added in version 3.2. * * @ingroup input */ GLFWAPI uint64_t glfwGetTimerFrequency(void); /*! @brief Makes the context of the specified window current for the calling * thread. * * This function makes the OpenGL or OpenGL ES context of the specified window * current on the calling thread. It can also detach the current context from * the calling thread without making a new one current by passing in `NULL`. * * A context must only be made current on a single thread at a time and each * thread can have only a single current context at a time. Making a context * current detaches any previously current context on the calling thread. * * When moving a context between threads, you must detach it (make it * non-current) on the old thread before making it current on the new one. * * By default, making a context non-current implicitly forces a pipeline flush. * On machines that support `GL_KHR_context_flush_control`, you can control * whether a context performs this flush by setting the * [GLFW_CONTEXT_RELEASE_BEHAVIOR](@ref GLFW_CONTEXT_RELEASE_BEHAVIOR_hint) * hint. * * The specified window must have an OpenGL or OpenGL ES context. Specifying * a window without a context will generate a @ref GLFW_NO_WINDOW_CONTEXT * error. * * @param[in] window The window whose context to make current, or `NULL` to * detach the current context. * * @remarks If the previously current context was created via a different * context creation API than the one passed to this function, GLFW will still * detach the previous one from its API before making the new one current. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref * GLFW_NO_WINDOW_CONTEXT and @ref GLFW_PLATFORM_ERROR. * * @thread_safety This function may be called from any thread. * * @sa @ref context_current * @sa @ref glfwGetCurrentContext * * @since Added in version 3.0. * * @ingroup context */ GLFWAPI void glfwMakeContextCurrent(GLFWwindow* window); /*! @brief Returns the window whose context is current on the calling thread. * * This function returns the window whose OpenGL or OpenGL ES context is * current on the calling thread. * * @return The window whose context is current, or `NULL` if no window's * context is current. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function may be called from any thread. * * @sa @ref context_current * @sa @ref glfwMakeContextCurrent * * @since Added in version 3.0. * * @ingroup context */ GLFWAPI GLFWwindow* glfwGetCurrentContext(void); /*! @brief Swaps the front and back buffers of the specified window. * * This function swaps the front and back buffers of the specified window when * rendering with OpenGL or OpenGL ES. If the swap interval is greater than * zero, the GPU driver waits the specified number of screen updates before * swapping the buffers. * * The specified window must have an OpenGL or OpenGL ES context. Specifying * a window without a context will generate a @ref GLFW_NO_WINDOW_CONTEXT * error. * * This function does not apply to Vulkan. If you are rendering with Vulkan, * see `vkQueuePresentKHR` instead. * * @param[in] window The window whose buffers to swap. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref * GLFW_NO_WINDOW_CONTEXT and @ref GLFW_PLATFORM_ERROR. * * @remark __EGL:__ The context of the specified window must be current on the * calling thread. * * @thread_safety This function may be called from any thread. * * @sa @ref buffer_swap * @sa @ref glfwSwapInterval * * @since Added in version 1.0. * @glfw3 Added window handle parameter. * * @ingroup window */ GLFWAPI void glfwSwapBuffers(GLFWwindow* window); /*! @brief Sets the swap interval for the current context. * * This function sets the swap interval for the current OpenGL or OpenGL ES * context, i.e. the number of screen updates to wait from the time @ref * glfwSwapBuffers was called before swapping the buffers and returning. This * is sometimes called _vertical synchronization_, _vertical retrace * synchronization_ or just _vsync_. * * A context that supports either of the `WGL_EXT_swap_control_tear` and * `GLX_EXT_swap_control_tear` extensions also accepts _negative_ swap * intervals, which allows the driver to swap immediately even if a frame * arrives a little bit late. You can check for these extensions with @ref * glfwExtensionSupported. * * A context must be current on the calling thread. Calling this function * without a current context will cause a @ref GLFW_NO_CURRENT_CONTEXT error. * * This function does not apply to Vulkan. If you are rendering with Vulkan, * see the present mode of your swapchain instead. * * @param[in] interval The minimum number of screen updates to wait for * until the buffers are swapped by @ref glfwSwapBuffers. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref * GLFW_NO_CURRENT_CONTEXT and @ref GLFW_PLATFORM_ERROR. * * @remark This function is not called during context creation, leaving the * swap interval set to whatever is the default for that API. This is done * because some swap interval extensions used by GLFW do not allow the swap * interval to be reset to zero once it has been set to a non-zero value. * * @remark Some GPU drivers do not honor the requested swap interval, either * because of a user setting that overrides the application's request or due to * bugs in the driver. * * @thread_safety This function may be called from any thread. * * @sa @ref buffer_swap * @sa @ref glfwSwapBuffers * * @since Added in version 1.0. * * @ingroup context */ GLFWAPI void glfwSwapInterval(int interval); /*! @brief Returns whether the specified extension is available. * * This function returns whether the specified * [API extension](@ref context_glext) is supported by the current OpenGL or * OpenGL ES context. It searches both for client API extension and context * creation API extensions. * * A context must be current on the calling thread. Calling this function * without a current context will cause a @ref GLFW_NO_CURRENT_CONTEXT error. * * As this functions retrieves and searches one or more extension strings each * call, it is recommended that you cache its results if it is going to be used * frequently. The extension strings will not change during the lifetime of * a context, so there is no danger in doing this. * * This function does not apply to Vulkan. If you are using Vulkan, see @ref * glfwGetRequiredInstanceExtensions, `vkEnumerateInstanceExtensionProperties` * and `vkEnumerateDeviceExtensionProperties` instead. * * @param[in] extension The ASCII encoded name of the extension. * @return `GLFW_TRUE` if the extension is available, or `GLFW_FALSE` * otherwise. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref * GLFW_NO_CURRENT_CONTEXT, @ref GLFW_INVALID_VALUE and @ref * GLFW_PLATFORM_ERROR. * * @thread_safety This function may be called from any thread. * * @sa @ref context_glext * @sa @ref glfwGetProcAddress * * @since Added in version 1.0. * * @ingroup context */ GLFWAPI int glfwExtensionSupported(const char* extension); /*! @brief Returns the address of the specified function for the current * context. * * This function returns the address of the specified OpenGL or OpenGL ES * [core or extension function](@ref context_glext), if it is supported * by the current context. * * A context must be current on the calling thread. Calling this function * without a current context will cause a @ref GLFW_NO_CURRENT_CONTEXT error. * * This function does not apply to Vulkan. If you are rendering with Vulkan, * see @ref glfwGetInstanceProcAddress, `vkGetInstanceProcAddr` and * `vkGetDeviceProcAddr` instead. * * @param[in] procname The ASCII encoded name of the function. * @return The address of the function, or `NULL` if an * [error](@ref error_handling) occurred. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref * GLFW_NO_CURRENT_CONTEXT and @ref GLFW_PLATFORM_ERROR. * * @remark The address of a given function is not guaranteed to be the same * between contexts. * * @remark This function may return a non-`NULL` address despite the * associated version or extension not being available. Always check the * context version or extension string first. * * @pointer_lifetime The returned function pointer is valid until the context * is destroyed or the library is terminated. * * @thread_safety This function may be called from any thread. * * @sa @ref context_glext * @sa @ref glfwExtensionSupported * * @since Added in version 1.0. * * @ingroup context */ GLFWAPI GLFWglproc glfwGetProcAddress(const char* procname); /*! @brief Returns whether the Vulkan loader and an ICD have been found. * * This function returns whether the Vulkan loader and any minimally functional * ICD have been found. * * The availability of a Vulkan loader and even an ICD does not by itself guarantee that * surface creation or even instance creation is possible. Call @ref * glfwGetRequiredInstanceExtensions to check whether the extensions necessary for Vulkan * surface creation are available and @ref glfwGetPhysicalDevicePresentationSupport to * check whether a queue family of a physical device supports image presentation. * * @return `GLFW_TRUE` if Vulkan is minimally available, or `GLFW_FALSE` * otherwise. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED. * * @thread_safety This function may be called from any thread. * * @sa @ref vulkan_support * * @since Added in version 3.2. * * @ingroup vulkan */ GLFWAPI int glfwVulkanSupported(void); /*! @brief Returns the Vulkan instance extensions required by GLFW. * * This function returns an array of names of Vulkan instance extensions required * by GLFW for creating Vulkan surfaces for GLFW windows. If successful, the * list will always contain `VK_KHR_surface`, so if you don't require any * additional extensions you can pass this list directly to the * `VkInstanceCreateInfo` struct. * * If Vulkan is not available on the machine, this function returns `NULL` and * generates a @ref GLFW_API_UNAVAILABLE error. Call @ref glfwVulkanSupported * to check whether Vulkan is at least minimally available. * * If Vulkan is available but no set of extensions allowing window surface * creation was found, this function returns `NULL`. You may still use Vulkan * for off-screen rendering and compute work. * * @param[out] count Where to store the number of extensions in the returned * array. This is set to zero if an error occurred. * @return An array of ASCII encoded extension names, or `NULL` if an * [error](@ref error_handling) occurred. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_API_UNAVAILABLE. * * @remark Additional extensions may be required by future versions of GLFW. * You should check if any extensions you wish to enable are already in the * returned array, as it is an error to specify an extension more than once in * the `VkInstanceCreateInfo` struct. * * @pointer_lifetime The returned array is allocated and freed by GLFW. You * should not free it yourself. It is guaranteed to be valid only until the * library is terminated. * * @thread_safety This function may be called from any thread. * * @sa @ref vulkan_ext * @sa @ref glfwCreateWindowSurface * * @since Added in version 3.2. * * @ingroup vulkan */ GLFWAPI const char** glfwGetRequiredInstanceExtensions(uint32_t* count); #if defined(VK_VERSION_1_0) /*! @brief Returns the address of the specified Vulkan instance function. * * This function returns the address of the specified Vulkan core or extension * function for the specified instance. If instance is set to `NULL` it can * return any function exported from the Vulkan loader, including at least the * following functions: * * - `vkEnumerateInstanceExtensionProperties` * - `vkEnumerateInstanceLayerProperties` * - `vkCreateInstance` * - `vkGetInstanceProcAddr` * * If Vulkan is not available on the machine, this function returns `NULL` and * generates a @ref GLFW_API_UNAVAILABLE error. Call @ref glfwVulkanSupported * to check whether Vulkan is at least minimally available. * * This function is equivalent to calling `vkGetInstanceProcAddr` with * a platform-specific query of the Vulkan loader as a fallback. * * @param[in] instance The Vulkan instance to query, or `NULL` to retrieve * functions related to instance creation. * @param[in] procname The ASCII encoded name of the function. * @return The address of the function, or `NULL` if an * [error](@ref error_handling) occurred. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED and @ref * GLFW_API_UNAVAILABLE. * * @pointer_lifetime The returned function pointer is valid until the library * is terminated. * * @thread_safety This function may be called from any thread. * * @sa @ref vulkan_proc * * @since Added in version 3.2. * * @ingroup vulkan */ GLFWAPI GLFWvkproc glfwGetInstanceProcAddress(VkInstance instance, const char* procname); /*! @brief Returns whether the specified queue family can present images. * * This function returns whether the specified queue family of the specified * physical device supports presentation to the platform GLFW was built for. * * If Vulkan or the required window surface creation instance extensions are * not available on the machine, or if the specified instance was not created * with the required extensions, this function returns `GLFW_FALSE` and * generates a @ref GLFW_API_UNAVAILABLE error. Call @ref glfwVulkanSupported * to check whether Vulkan is at least minimally available and @ref * glfwGetRequiredInstanceExtensions to check what instance extensions are * required. * * @param[in] instance The instance that the physical device belongs to. * @param[in] device The physical device that the queue family belongs to. * @param[in] queuefamily The index of the queue family to query. * @return `GLFW_TRUE` if the queue family supports presentation, or * `GLFW_FALSE` otherwise. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref * GLFW_API_UNAVAILABLE and @ref GLFW_PLATFORM_ERROR. * * @remark @macos This function currently always returns `GLFW_TRUE`, as the * `VK_MVK_macos_surface` and `VK_EXT_metal_surface` extensions do not provide * a `vkGetPhysicalDevice*PresentationSupport` type function. * * @thread_safety This function may be called from any thread. For * synchronization details of Vulkan objects, see the Vulkan specification. * * @sa @ref vulkan_present * * @since Added in version 3.2. * * @ingroup vulkan */ GLFWAPI int glfwGetPhysicalDevicePresentationSupport(VkInstance instance, VkPhysicalDevice device, uint32_t queuefamily); /*! @brief Creates a Vulkan surface for the specified window. * * This function creates a Vulkan surface for the specified window. * * If the Vulkan loader or at least one minimally functional ICD were not found, * this function returns `VK_ERROR_INITIALIZATION_FAILED` and generates a @ref * GLFW_API_UNAVAILABLE error. Call @ref glfwVulkanSupported to check whether * Vulkan is at least minimally available. * * If the required window surface creation instance extensions are not * available or if the specified instance was not created with these extensions * enabled, this function returns `VK_ERROR_EXTENSION_NOT_PRESENT` and * generates a @ref GLFW_API_UNAVAILABLE error. Call @ref * glfwGetRequiredInstanceExtensions to check what instance extensions are * required. * * The window surface cannot be shared with another API so the window must * have been created with the [client api hint](@ref GLFW_CLIENT_API_attrib) * set to `GLFW_NO_API` otherwise it generates a @ref GLFW_INVALID_VALUE error * and returns `VK_ERROR_NATIVE_WINDOW_IN_USE_KHR`. * * The window surface must be destroyed before the specified Vulkan instance. * It is the responsibility of the caller to destroy the window surface. GLFW * does not destroy it for you. Call `vkDestroySurfaceKHR` to destroy the * surface. * * @param[in] instance The Vulkan instance to create the surface in. * @param[in] window The window to create the surface for. * @param[in] allocator The allocator to use, or `NULL` to use the default * allocator. * @param[out] surface Where to store the handle of the surface. This is set * to `VK_NULL_HANDLE` if an error occurred. * @return `VK_SUCCESS` if successful, or a Vulkan error code if an * [error](@ref error_handling) occurred. * * @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref * GLFW_API_UNAVAILABLE, @ref GLFW_PLATFORM_ERROR and @ref GLFW_INVALID_VALUE * * @remark If an error occurs before the creation call is made, GLFW returns * the Vulkan error code most appropriate for the error. Appropriate use of * @ref glfwVulkanSupported and @ref glfwGetRequiredInstanceExtensions should * eliminate almost all occurrences of these errors. * * @remark @macos GLFW prefers the `VK_EXT_metal_surface` extension, with the * `VK_MVK_macos_surface` extension as a fallback. The name of the selected * extension, if any, is included in the array returned by @ref * glfwGetRequiredInstanceExtensions. * * @remark @macos This function creates and sets a `CAMetalLayer` instance for * the window content view, which is required for MoltenVK to function. * * @remark @x11 By default GLFW prefers the `VK_KHR_xcb_surface` extension, * with the `VK_KHR_xlib_surface` extension as a fallback. You can make * `VK_KHR_xlib_surface` the preferred extension by setting the * [GLFW_X11_XCB_VULKAN_SURFACE](@ref GLFW_X11_XCB_VULKAN_SURFACE_hint) init * hint. The name of the selected extension, if any, is included in the array * returned by @ref glfwGetRequiredInstanceExtensions. * * @thread_safety This function may be called from any thread. For * synchronization details of Vulkan objects, see the Vulkan specification. * * @sa @ref vulkan_surface * @sa @ref glfwGetRequiredInstanceExtensions * * @since Added in version 3.2. * * @ingroup vulkan */ GLFWAPI VkResult glfwCreateWindowSurface(VkInstance instance, GLFWwindow* window, const VkAllocationCallbacks* allocator, VkSurfaceKHR* surface); #endif /*VK_VERSION_1_0*/ /************************************************************************* * Global definition cleanup *************************************************************************/ /* ------------------- BEGIN SYSTEM/COMPILER SPECIFIC -------------------- */ #ifdef GLFW_WINGDIAPI_DEFINED #undef WINGDIAPI #undef GLFW_WINGDIAPI_DEFINED #endif #ifdef GLFW_CALLBACK_DEFINED #undef CALLBACK #undef GLFW_CALLBACK_DEFINED #endif /* Some OpenGL related headers need GLAPIENTRY, but it is unconditionally * defined by some gl.h variants (OpenBSD) so define it after if needed. */ #ifndef GLAPIENTRY #define GLAPIENTRY … #define GLFW_GLAPIENTRY_DEFINED #endif /* -------------------- END SYSTEM/COMPILER SPECIFIC --------------------- */ #ifdef __cplusplus } #endif #endif /* _glfw3_h_ */
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