hpux man page for xclosedisplay

XCloseDisplay() 														   XCloseDisplay()

Name
  XCloseDisplay - disconnect a client program from an X server and display.

Synopsis
  XCloseDisplay(display)
	Display *display;

Arguments
  display   Specifies a connection to an X server; returned from XOpenDisplay().

Description
  XCloseDisplay() closes the connection between the current client and the X server specified by the Display argument.

  The  XCloseDisplay()	routine destroys all windows, resource IDs (Window, Font, Pixmap, Colormap, Cursor, and GContext), or other resources
  (GCs) that the client application has created on this display, unless the close down mode of the client's resources  has  been  changed  by
  XSetCloseDownMode().	 Therefore,  these windows, resource IDs, and other resources should not be referenced again.  In addition, this rou-
  tine discards any requests that have been buffered but not yet sent to the server.

  Although these operations automatically (implicitly) occur when a process exits under UNIX, you should call XCloseDisplay() anyway so  that
  any pending errors are reported as XCloseDisplay() performs a final XSync() operation.

  For more information, see Volume One, Chapter 3, Basic Window Program.

Errors
  BadGC     Default GC already freed.

See Also
  XDefaultScreen(), XFree(), XNoOp(), XOpenDisplay().

Xlib - HouseKeeping														   XCloseDisplay()