CallbackAction# class CallbackAction(**properties: Any)# Superclasses: ShortcutAction, Object A GtkShortcutAction that invokes a callback. Constructors# class CallbackAction classmethod new(callback: Callable[[Widget, Variant | None, Any], bool], data: Any = None) → CallbackAction# Create a custom action that calls the given callback when activated. Parameters: callback – the callback to call when the action is activated data – the data to be passed to callback