gtk-sharp Gtk# is thread aware, but not thread safe; See the Gtk# Thread Programming for details. System.Delegate System.Void 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.