Path: utzoo!attcan!uunet!ginosko!gem.mps.ohio-state.edu!apple!sun-barr!ames!amdahl!pacbell!tandem!wizard!steve
From: steve@wizard.UUCP (Steve Mansour)
Newsgroups: comp.windows.x
Subject: Problem with GXxor Function???
Keywords: X window
Message-ID: <521@wizard.UUCP>
Date: 22 Sep 89 23:32:00 GMT
Lines: 34

Hello,

I have a small program that works with some X servers and not
with others.  I'm not sure what I'm doing wrong.  It involves 
setting the graphics context function to GXxor mode.  Once the 
GXxor mode is set, the program draws some rectangles.  The 
rectangles appear when we direct the output to the X servers
for the following machines:
		MIT's for the Sun 4/260
		xnews  (pre-FCS)
		Solbourne 4/600
		MAC IIx AUX 1.1
Nothing appears when we send the output to the servers for these
machines:
		DEC 3100
		Apollo DN4500 (SR10.2)
		a PC Clone (ISC Unix 2.0)

Essentially, the program is as follows:

    {
      // create a window, create a gc
      // set foreground to black and background to white

      XSetFunction( display, gc, GCxor );
      // draw some rectangles
      // wait
    }

What am I forgetting????

Any help would be greatly apprecicated.

Steve Mansour