void prop_set_strings_utf8(Window win, Atom prop, gchar **strs);
void prop_erase(Window win, Atom prop);
void prop_message(Window about, Atom messagetype, glong data0, glong data1,
void prop_set_strings_utf8(Window win, Atom prop, gchar **strs);
void prop_erase(Window win, Atom prop);
void prop_message(Window about, Atom messagetype, glong data0, glong data1,