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