A function which is called when an object emits a matching event,
as used in #atk_add_focus_tracker.
Currently the only events for which object-specific handlers are
supported are events of type "focus:". Most clients of ATK will prefer to
attach signal handlers for the various ATK signals instead.
A function which is called when an object emits a matching event, as used in #atk_add_focus_tracker. Currently the only events for which object-specific handlers are supported are events of type "focus:". Most clients of ATK will prefer to attach signal handlers for the various ATK signals instead.
see idatk_add_focus_tracker