Path: utzoo!attcan!uunet!snorkelwacker!bloom-beacon!LARRY.MCRCIM.MCGILL.EDU!mouse
From: mouse@LARRY.MCRCIM.MCGILL.EDU (der Mouse)
Newsgroups: comp.windows.x
Subject: Re:  XSetWindowBackgroundPixmap?
Message-ID: <9003211947.AA28456@Larry.McRCIM.McGill.EDU>
Date: 21 Mar 90 19:47:33 GMT
Sender: daemon@athena.mit.edu (Mr Background)
Organization: The Internet
Lines: 17

> If I'm using XSetWindowBackgroundPixmap(dpy, win, pix), is it
> guaranteed that subsequent changes to the pixmap will appear in win,
> whenever XClearWindow(win) is called?

No.  From the Xlib documentation....

	ground.  The background-pixmap can be freed immediately if
	no further explicit reference is made to it (the X server
	will keep a copy to use when needed).  If you later draw
	into the pixmap used for the background, what happens is
	undefined because the X implementation is free to make a
	copy of the pixmap or to use the same pixmap.

					der Mouse

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