Widget.connectUnrealize

gulong connectUnrealize(T)(T callback,  Flag!"After" after =  No.After) if (isCallable!T
    &&  is(ReturnType!T ==  void)
   && (Parameters!T.length <  1 || (ParameterStorageClassTuple!T[0]  ==  ParameterStorageClass.none &&  is(Parameters!T[0] :  gtk.widget.Widget)))
   &&  Parameters!T.length <  2)

Connect to Unrealize signal.

Emitted when the [gdk.surface.Surface] associated with widget is destroyed.

This means that [gtk.widget.Widget.unrealize] has been called or the widget has been unmapped (that is, it is going to be hidden).

Parameters

`callback`	signal callback delegate or function to connect `void callback(gtk.widget.Widget widget)` `widget` the instance the signal is connected to (optional)
`after`	Yes.After to execute callback after default handler, No.After to execute before (default)

Returns

Signal ID