Activates the action on the @widget with the given @args.
Note that some actions ignore the passed in @flags, @widget or @args.
Activation of an action can fail for various reasons. If the action
is not supported by the @widget, if the @args don't match the action
or if the activation otherwise had no effect, %FALSE will be returned.
Activates the action on the @widget with the given @args.
Note that some actions ignore the passed in @flags, @widget or @args.
Activation of an action can fail for various reasons. If the action is not supported by the @widget, if the @args don't match the action or if the activation otherwise had no effect, %FALSE will be returned.