void IWindowFrameBackend.Initialize(IWindowFrameEventSink eventSink)
{
this.eventSink = eventSink;
Initialize ();
#if !XWT_GTK3
Window.SizeRequested += delegate(object o, Gtk.SizeRequestedArgs args) {
if (!Window.Resizable) {
int w = args.Requisition.Width, h = args.Requisition.Height;
if (w < (int) requestedSize.Width)
w = (int) requestedSize.Width;
if (h < (int) requestedSize.Height)
h = (int) requestedSize.Height;
args.Requisition = new Gtk.Requisition () { Width = w, Height = h };
}
};
#endif
}