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