gtk-sharp 2.12.0.0 Gtk# is thread aware, but not thread safe; See the Gtk# Thread Programming for details. Event sender. Event arguments.

Event handler. Called whenever a widget is unmapped--- that is, whenever its window is hidden.

The event utilizes this delegate: Event data is passed via the parameter. To attach a to an event, add the UnmapEventHandler instance to the event. The methods referenced by the UnmapEventHandler instance are invoked whenever the event is raised, until the UnmapEventHandler is removed from the event. System.Delegate System.Void