free(buf);
XSetSelectionOwner (dpy, a, w, 0);
/* Send a ClientMessage notification so other apps
can detect the compositing manager started */
XClientMessageEvent ev;
ev.type = ClientMessage;
ev.window = RootWindow (dpy, scr);
ev.message_type = a;
ev.format = 32;
ev.data.l[0] = CurrentTime;
ev.data.l[1] = a;
ev.data.l[2] = w;
ev.data.l[3] = 0;
ev.data.l[4] = 0;
XSendEvent(dpy, RootWindow (dpy, scr), False, StructureNotifyMask, (XEvent*)&ev);
}
int