vte-sharp Gtk# is thread aware, but not thread safe; See the Gtk# Thread Programming for details. System.Delegate To be added. To be added. Event handler. The event utilizes this delegate: Event data is passed via the parameter. To attach a to an event, add the ChildExitedHandler instance to the event. The methods referenced by the ChildExitedHandler instance are invoked whenever the event is raised, until the ChildExitedHandler is removed from the event. System.Void