-static int
-win_property(Window w, Atom a, Atom t, long l, unsigned char **prop)
-{
- Atom real;
- int format;
- unsigned long res, extra;
- int status;
-
- status = XGetWindowProperty(dpy, w, a, 0L, l, False, t, &real, &format,
- &res, &extra, prop);
-
- if(status != Success || *prop == 0) {
- return 0;
- }
- if(res == 0) {
- free((void *) *prop);
- }
- return res;
-}
-
-int
-win_proto(Window w)
-{
- unsigned char *protocols;
- long res;
- int protos = 0;
- int i;
-
- res = win_property(w, wm_atom[WMProtocols], XA_ATOM, 20L, &protocols);
- if(res <= 0) {
- return protos;
- }
- for(i = 0; i < res; i++) {
- if(protocols[i] == wm_atom[WMDelete])
- protos |= WM_PROTOCOL_DELWIN;
- }
- free((char *) protocols);
- return protos;
-}
-
-void
-send_message(Window w, Atom a, long value)
-{
- XEvent e;
-
- e.type = ClientMessage;
- e.xclient.window = w;
- e.xclient.message_type = a;
- e.xclient.format = 32;
- e.xclient.data.l[0] = value;
- e.xclient.data.l[1] = CurrentTime;
- XSendEvent(dpy, w, False, NoEventMask, &e);
- XFlush(dpy);
-}
-
-/*
- * There's no way to check accesses to destroyed windows, thus
- * those cases are ignored (especially on UnmapNotify's).
- * Other types of errors call Xlib's default error handler, which
- * calls exit().
- */
-int
-error_handler(Display *dpy, XErrorEvent *error)
-{
- if(error->error_code == BadWindow
- || (error->request_code == X_SetInputFocus
- && error->error_code == BadMatch)
- || (error->request_code == X_PolyText8
- && error->error_code == BadDrawable)
- || (error->request_code == X_PolyFillRectangle
- && error->error_code == BadDrawable)
- || (error->request_code == X_PolySegment
- && error->error_code == BadDrawable)
- || (error->request_code == X_ConfigureWindow
- && error->error_code == BadMatch)
- || (error->request_code == X_GrabKey
- && error->error_code == BadAccess))
- return 0;
- fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
- error->request_code, error->error_code);
- return x_error_handler(dpy, error); /* may call exit() */
-}
-
-/*
- * Startup Error handler to check if another window manager
- * is already running.
- */
-static int
-startup_error_handler(Display *dpy, XErrorEvent *error)
-{
- other_wm_running = True;
- return -1;
-}
-