#define WINDOW_AS_MENUFRAME(win) ((struct _ObMenuFrame*)win)
#define WINDOW_AS_DOCK(win) ((struct _ObDock*)win)
#define WINDOW_AS_CLIENT(win) ((struct _ObClient*)win)
#define WINDOW_AS_INTERNAL(win) ((struct _ObInternalWindow*)win)
#define WINDOW_AS_MENUFRAME(win) ((struct _ObMenuFrame*)win)
#define WINDOW_AS_DOCK(win) ((struct _ObDock*)win)
#define WINDOW_AS_CLIENT(win) ((struct _ObClient*)win)
#define WINDOW_AS_INTERNAL(win) ((struct _ObInternalWindow*)win)