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From: marbru@auto-trol.com (Martin Brunecky)
Newsgroups: comp.windows.x.motif
Subject: Re: VMS SYSGEN parameter WINDOW_SYSTEM ?
Message-ID: <1991Jun11.213847.13285@auto-trol.com>
Date: 11 Jun 91 21:38:47 GMT
References: <1991Jun11.113458.9384@uwovax.uwo.ca>
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In article <1991Jun11.113458.9384@uwovax.uwo.ca> brent@uwovax.uwo.ca (Brent Sterner) writes:
>
>Could some kind soul please explain the of the VMS sysgen parameter
>WINDOW_SYSTEM?  I'm running VMS 5.4.  SYSGEN says it is dynamic. 
>.....
  It is dynamic to that extent you can change it anytime; however, parameter
  is only used in few places, and the new value will be used when such pieces
  of the code is used.
  Values:
  0 - no window system
  1 - DECWindows, i.e. commands SYSGEN to load X device drivers
  2 - VWS/UIS,    i.e. commands SYSGEN to load UIS device drivers

  Note SYSGEN normally loads (AUTO ALL) drivers for ALL devices it finds
  on the system. However, for frame buffers (QVSS,QDSS...) DEC has different
  drivers (based on window system used) for the same physical device.
  So, even though SYSGEN "sees" the device, it needs an advice which driver
  to load.
  And so, on your 6xxx machine, it won't load anything since there is no
  frame buffer.

  Also, WINDOW_SYSTEM is used by AUTOGEN to properly configure the system,
  however (since I am not a big fan of AUTOGEN), I am not 100% sure that
  this is the ONLY thing it looks for. Tuning system for X client-only
  application may be yet another piece of black magic.

  I don't know about any other utility using WINDOW_SYSTEM value - but
  there are many other things I don't know.....


-- 
=*= Opinions presented here are solely of my own and not those of Auto-trol =*=
Martin Brunecky                      marbru%auto-trol@sunpeaks.central.sun.com
(303) 252-2499                       (better avoid:  marbru@auto-trol.COM )
Auto-trol Technology Corp. 12500 North Washington St., Denver, CO 80241-2404