Re: FVWM: loses info in graphics windows

From: Paul D. Smith <pausmith_at_nortelnetworks.com>
Date: 10 Jul 2001 09:39:06 -0400

%% Dan Melconian <melcon_at_triumf.ca> writes:

  dm> I have recently switched (back) to FVWM from GNOME, and am
  dm> generally happy with everything. The one thing I _really_ want to
  dm> fix, and which may sway me back to GNOME, is the way FVWM is
  dm> handling my graphics windows. I use a local program, physica,
  dm> which brings up it's own graphics window to make my pretty plots;
  dm> whenever I switch pages/desks, or even just place another window
  dm> on top of this graphics window, the graphics disappear and I'm
  dm> left with a blank window (when placing other windows on top, only
  dm> the area covered is lost). When I work with small files, this
  dm> isn't a problem because I generally use macros, but sometimes it
  dm> takes 20 mins to analyze stuff, which is far too long just to look
  dm> again at what I've already analyzed!

It's not the job of the window manager to save the contents of windows
when they're obscured: it's the job of the application to redisplay its
contents when it gets the appropriate event.

If physica can't do this without recalculating everything from scratch,
it's _seriously_ broken. You should ask them to fix it or get a better
tool...

Anyway, you can have FVWM ask the X server to try to cache the contents
of windows using the BackingStore and/or SaveUnder Style options; see
the fvwm2 man page. This must be what GNOME is doing if you don't see
this behavior there. BTW, what WM were you using with GNOME? GNOME is
a whole desktop environment, not just a WM. At work I run GNOME with
FVWM as the WM.

-- 
-------------------------------------------------------------------------------
 Paul D. Smith <psmith_at_baynetworks.com>    HASMAT--HA Software Methods & Tools
 "Please remain calm...I may be mad, but I am a professional." --Mad Scientist
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   These are my opinions---Nortel Networks takes no responsibility for them.
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Received on Tue Jul 10 2001 - 08:39:24 BST

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