--- /dev/null
+/* This file is part of the Project Athena Zephyr Notification System.
+ * It is one of the source files comprising zwgc, the Zephyr WindowGram
+ * client.
+ *
+ * Created by: Marc Horowitz <marc@athena.mit.edu>
+ *
+ * $Id: xerror.c,v 1.5 1999/08/13 00:19:51 danw Exp $
+ *
+ * Copyright (c) 1989 by the Massachusetts Institute of Technology.
+ * For copying and distribution information, see the file
+ * "mit-copyright.h".
+ */
+
+#include <sysdep.h>
+
+#if (!defined(lint) && !defined(SABER))
+static const char rcsid_xerror_c[] = "$Id: xerror.c,v 1.5 1999/08/13 00:19:51 danw Exp $";
+#endif
+
+#include <zephyr/mit-copyright.h>
+
+#ifndef X_DISPLAY_MISSING
+
+#include <X11/Xlib.h>
+#include "mux.h"
+
+int xerror_happened;
+
+/*ARGSUSED*/
+static int xerrortrap(dpy,xerrev)
+ Display *dpy;
+ XErrorEvent *xerrev;
+{
+ xerror_happened = 1;
+ return 0;
+}
+
+/*ARGSUSED*/
+void begin_xerror_trap(dpy)
+ Display *dpy;
+{
+ xerror_happened = 0;
+ XSetErrorHandler(xerrortrap);
+}
+
+void end_xerror_trap(dpy)
+ Display *dpy;
+{
+ XSync(dpy,False);
+ XSetErrorHandler(NULL);
+}
+
+#endif
+