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From: mouse@lightning.mcrcim.mcgill.EDU (der Mouse)
Newsgroups: comp.windows.x
Subject: Re:  XChangeWindowAttributes
Message-ID: <9105030612.AA23478@lightning.McRCIM.McGill.EDU>
Date: 3 May 91 06:12:54 GMT
Sender: daemon@athena.mit.edu (Mr Background)
Organization: The Internet
Lines: 22

> It seems that when I execute XChangeWindowAttributes(...) to change
> the background pixmap of a window, the effect only takes place after
> the window is remapped.

Or until an exposure is generated some other way.  Two quotes from the
Xlib document:

[after XSetWindowBackground and XSetWindowBackgroundPixmap]

	XSetWindowBackground and XSetWindowBackgroundPixmap do not
	change the current contents of the window.

[under XChangeWindowAttributes]

	Changing the background does not cause the window contents to
	be changed.  To repaint the window and its background, use
	XClearWindow.

					der Mouse

			old: mcgill-vision!mouse
			new: mouse@larry.mcrcim.mcgill.edu