- Event sender.
- Event arguments.
The Widget.SizeRequested event utilizes this delegate:
Event data is passed via the Gtk.SizeRequestedArgs parameter.
To attach a Gtk.SizeRequestedHandler to an event, add the SizeRequestedHandler instance to the event. The methods referenced by the SizeRequestedHandler instance are invoked whenever the event is raised, until the SizeRequestedHandler is removed from the event.