The type of callback function used for atk_component_add_focus_handler() and atk_component_remove_focus_handler()
Deprecated: Deprecated with atk_component_add_focus_handler() and atk_component_remove_focus_handler(). See those methods for more information.
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The type of callback function used for atk_component_add_focus_handler() and atk_component_remove_focus_handler()