Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ncar!ames!scubed!optis31!montiel
From: montiel@optis31.UUCP (Tony Montiel)
Newsgroups: comp.windows.x
Subject: AIX (PS/2) X Server bug?
Message-ID: <684@optis31.UUCP>
Date: 17 Nov 89 23:51:29 GMT
Reply-To: montiel@optis31.UUCP (Tony Montiel)
Distribution: usa
Organization: Optigraphics Corporation, San Diego
Lines: 19


I typed in a code segment from O'Reilly & Associates, Inc.: "Xlib Programming Manual
by Adrian Nye, Vol. One" found on page 270 (9.2.1.2.  Using Pointer Motion Hints).
For those of you without the book, this implements a simple line drawing function
with the GC function set to GXxor.

The program works great on my Sun 3/60 using the MIT server (fixes + Purdues), but
when I take it over to my PS/2 running AIX and IBM's X server, XDrawLine() doesn't
work.  When the program gets an Expose event, it changes the GC function to GXcopy
and does an XDrawLines() and this works!  So I tried using: GXcopy, GXset/GXclear
and they both worked with XDrawLine().  It was ugly, but at least I got some lines
to draw.  When I switch back to GXxor...nothing.

Is this a known bug with the IBM X server?  I can't imagine that I'm the first
person to try this.
-- 
Tony Montiel					Optigraphics Corporation
(619) 292-6060					9339 Carroll Park Drive
uunet!seismo!esosun!opti!montiel		San Diego, CA  92121