gcv.foreground = (WhitePixel(ob_display, ob_screen) ^
BlackPixel(ob_display, ob_screen));
opaque_gc = XCreateGC(ob_display, opaque_window.win,
gcv.foreground = (WhitePixel(ob_display, ob_screen) ^
BlackPixel(ob_display, ob_screen));
opaque_gc = XCreateGC(ob_display, opaque_window.win,