Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!cs.utexas.edu!bcm!wilkins!klong
From: klong@wilkins.bcm.tmc.edu (Kevin Long)
Newsgroups: comp.windows.x
Subject: Re: Delayed screen snapshots
Summary: Run program on A:0, xwatchwin and xwd it on B:0.
Keywords: X screen snapshot
Message-ID: <315@gazette.bcm.tmc.edu>
Date: 16 Mar 90 20:09:04 GMT
References: <312@gazette.bcm.tmc.edu>
Sender: usenet@bcm.tmc.edu
Lines: 40

In article <312@gazette.bcm.tmc.edu>, I write:
> I need something to take a snap shot of a region of my screen, but delay
> doing it for enough time for me to bring up a pop-up menu.

Steve Jacobson (csvsj@garnet.berkeley.edu) writes with a good idea:
>Here's what I do (it requires two displays...):
>
>On display one, start up the application you want to dump.
>On display two, run xwatchwin, to watch the root window on display one.
>
>On display one, ...pop up the menu...
>On display two, execute xwd, picking the xwatchwin window.
>
>Steve

I think this will do the trick nicely.
I'd still like for the authors to allow specififying a window ID as a 
command line parameter to xwd so I don't have to use the mouse to click
on the window.  It would only require one display, I think, with a 
scheme like:

	open an xterm
	xlswins the display to get the root window ID
	sleep 10; xwd -display A:0.0 -windowid 0x8023 -out blah.xwd &
        exit to close the xterm
        10 seconds later: voila.

I'll try to mail to them, if I can figure out their mail ids.  The R4
manual page only says:
  >AUTHORS
  >     Tony Della Fera, Digital Equipment Corp., MIT Project Athena
  >     William F. Wyatt, Smithsonian Astrophysical Observatory
Any pointers would be appreciated.


Regards,

	Kevin Long
	Baylor College of Medicine
	klong@bcm.tmc.edu