attrib_set.do_not_propagate_mask = CLIENT_NOPROPAGATEMASK;
XChangeWindowAttributes(obt_display, window,
CWEventMask|CWDontPropagate, &attrib_set);
attrib_set.do_not_propagate_mask = CLIENT_NOPROPAGATEMASK;
XChangeWindowAttributes(obt_display, window,
CWEventMask|CWDontPropagate, &attrib_set);