From: arlindo AT niteroi DOT gsfc DOT nasa DOT gov (Arlindo da Silva)
Subject: Re: opening X display
4 Nov 1997 04:07:17 -0800
Message-ID: <199711041157.GAA02721.cygnus.gnu-win32@woodmore.gsfc.nasa.gov>
References: <3 DOT 0 DOT 1 DOT 32 DOT 19971104070019 DOT 00927d30 AT zip DOT com DOT au>
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To: raf2 AT zip DOT com DOT au (raf)
Cc: gnu-win32 AT cygnus DOT com

> 
> an x app works fine when run directly from the command line.
> but when another program calls it, it fails to open the display.
> does anyone know why this is and what can be done about it?
> 

I am not sure. I spawnv() X applications all the time and have no problems
openning the display. Before starting the X application I always make sure
DISPLAY is set, e.g.,

  if ( !getenv("DISPLAY") ) putenv("DISPLAY=localhost:0.0");
  spawnv(_P_DETACH,path,argv), etc...

As I reported here the other day, I am having problems with execv() in the
lastest coolview.

-- 
Arlindo da Silva    
dasilva AT alum DOT mit DOT edu


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