Signal emitted when the GdkSurface associated with widget is destroyed, which means that gtk.widget.Widget.unrealize has been called or the widget has been unmapped (that is, it is going to be hidden).
Signal emitted when the GdkSurface associated with widget is destroyed, which means that gtk.widget.Widget.unrealize has been called or the widget has been unmapped (that is, it is going to be hidden).