XMapWindow(ob_display, win);
XSelectInput(ob_display, win, ExposureMask | StructureNotifyMask);
root = RootWindow (ob_display, DefaultScreen (ob_display));
XMapWindow(ob_display, win);
XSelectInput(ob_display, win, ExposureMask | StructureNotifyMask);
root = RootWindow (ob_display, DefaultScreen (ob_display));