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