godot/doc/classes/ButtonGroup.xml

<?xml version="1.0" encoding="UTF-8" ?>
<class name="ButtonGroup" inherits="Resource" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
	<brief_description>
		A group of buttons that doesn't allow more than one button to be pressed at a time.
	</brief_description>
	<description>
		A group of [BaseButton]-derived buttons. The buttons in a [ButtonGroup] are treated like radio buttons: No more than one button can be pressed at a time. Some types of buttons (such as [CheckBox]) may have a special appearance in this state.
		Every member of a [ButtonGroup] should have [member BaseButton.toggle_mode] set to [code]true[/code].
	</description>
	<tutorials>
	</tutorials>
	<methods>
		<method name="get_buttons">
			<return type="BaseButton[]" />
			<description>
				Returns an [Array] of [Button]s who have this as their [ButtonGroup] (see [member BaseButton.button_group]).
			</description>
		</method>
		<method name="get_pressed_button">
			<return type="BaseButton" />
			<description>
				Returns the current pressed button.
			</description>
		</method>
	</methods>
	<members>
		<member name="allow_unpress" type="bool" setter="set_allow_unpress" getter="is_allow_unpress" default="false">
			If [code]true[/code], it is possible to unpress all buttons in this [ButtonGroup].
		</member>
		<member name="resource_local_to_scene" type="bool" setter="set_local_to_scene" getter="is_local_to_scene" overrides="Resource" default="true" />
	</members>
	<signals>
		<signal name="pressed">
			<param index="0" name="button" type="BaseButton" />
			<description>
				Emitted when one of the buttons of the group is pressed.
			</description>
		</signal>
	</signals>
</class>