Path: utzoo!mnetor!tmsoft!torsqnt!news-server.csri.toronto.edu!cs.utexas.edu!usc!snorkelwacker.mit.edu!mit-eddie!media-lab!halazar
From: halazar@media-lab.MEDIA.MIT.EDU (Michael Halle)
Newsgroups: comp.windows.open-look
Subject: Re: XView bug on DECstation?
Message-ID: <4546@media-lab.MEDIA.MIT.EDU>
Date: 19 Dec 90 00:03:43 GMT
References: <72003@unix.cis.pitt.edu>
Organization: MIT Media Lab, Cambridge, MA
Lines: 71
In-reply-to: lambert@unix.cis.pitt.edu's message of 18 Dec 90 21:10:32 GMT


I posted the following to comp.windows.x a couple of days ago.  Sounds
like your problem.  Hopefully you can hack the xview sources.  Do any
applications work on your system???  All mine (except olwm and
"notice" windows) showed signs of similar brokenness.  I had the
problem under Ultrix 4.0, using the Ultrix (MIPS) compiler.

--------------
Here are a couple of other patches that I had to apply to get XView to
work on a Decstation 5000.

I hate the idea of passing out a lot of unofficial patches to XView,
but it took me a long time to track these down and I don't see a
public patch collection showing up anywhere.  So here goes.

The first patch is to fix a slider core dump...looks like something got
broken in the 2D->3D code transition.
The file is lib/libolgx/ol_slider.c .

The second bug was much more sinister.  My 3D-look panels were all
coming up monochromatic and broken-looking.  2D was fine.  Also, menus
would work only the first time, then would come up blank.  It turned
out that the colormap was not being properly initialized because the
cmap code uses a bunch of single bit bitfields for status .  These
bits were, unfortunately, declared as "int".  Looks like some
interesting sign error happened when a bit got set: where's the sign
bit in a one bit signed field?  Anyway, I changed the declaration to
be "unsigned int" and all was well. 
The file is lib/libxvin/color/cms_impl.h .


*** lib/libolgx/ol_slider.c	Fri Nov 23 02:07:34 1990
--- lib/libolgx/ol_slider.c.~1~	Fri Nov 23 01:29:48 1990
***************
*** 318,325 ****
  	/*
  	 * erase the old slider
  	 */
! 	XFillRectangle(info->dpy, win, info->three_d ? info->gc_rec[OLGX_BG1]->gc
! 		       : info->gc_rec[OLGX_WHITE]->gc, xstart,
  		       y,
  		       xwidth, info->slider_height + 1);
  
--- 318,324 ----
  	/*
  	 * erase the old slider
  	 */
! 	XFillRectangle(info->dpy, win, info->gc_rec[OLGX_BG1]->gc, xstart,
  		       y,
  		       xwidth, info->slider_height + 1);


*** lib/libxvin/color/cms_impl.h	Fri Nov 23 07:01:20 1990
--- lib/libxvin/color/cms_impl.h.~1~	Fri Nov 23 07:00:37 1990
***************
*** 43,49 ****
  #define STATUS(cms, field)           ((cms)->status_bits.field)
  #define STATUS_SET(cms, field)       STATUS(cms, field) = TRUE
  #define STATUS_RESET(cms, field)     STATUS(cms, field) = FALSE
! #define BIT_FIELD(field)             unsigned int field : 1
  
  /*
   ***********************************************************************
--- 43,49 ----
  #define STATUS(cms, field)           ((cms)->status_bits.field)
  #define STATUS_SET(cms, field)       STATUS(cms, field) = TRUE
  #define STATUS_RESET(cms, field)     STATUS(cms, field) = FALSE
! #define BIT_FIELD(field)             int field : 1
  
  /*
   ***********************************************************************