Path: utzoo!attcan!uunet!lll-winken!csd4.milw.wisc.edu!bionet!agate!ucbvax!tut.cis.ohio-state.edu!bloom-beacon!EXPO.LCS.MIT.EDU!converse
From: converse@EXPO.LCS.MIT.EDU (Donna Converse)
Newsgroups: comp.windows.x
Subject: Re: using XtIsManaged or XtIsRealized
Message-ID: <8904141416.AA21116@expo.lcs.mit.edu>
Date: 14 Apr 89 14:16:39 GMT
References: <2418@lll-lcc.UUCP>
Sender: daemon@bloom-beacon.MIT.EDU
Organization: X Consortium, MIT Laboratory for Computer Science
Lines: 13


Your original question:

> The
>images will change depending on what the user wants to look at, so I
>need to be able to "wipe out" the image in a Core widget and then redo
>it with the new image.

Set the window background pixel to the white pixel of the screen,
then clear the window:

XSetWindowBackground(dpy, win, WhitePixel(dpy, screen_number));
XClearWindow(dpy, win);