void CancelPrompt()
{
	Exclamation("Canceled");
}

GUI_APP_MAIN
{
	DropList list;
	list.ListObject().WhenCancel = callback(CancelPrompt);
	TopWindow win;
	win.Add(list.HSizePos().TopPos(0, Ctrl::STDSIZE));
	list.Add("Something");
	win.Run();
}