Connect to Unrealize signal.
The ::unrealize signal is emitted when the #GdkWindow 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 callback delegate or function to connect
void callback(gtk.widget.Widget widget)
widget the instance the signal is connected to (optional)
Yes.After to execute callback after default handler, No.After to execute before (default)
Signal ID
Connect to Unrealize signal.
The ::unrealize signal is emitted when the #GdkWindow 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).