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From: jnelson@gauche.zko.dec.com (Jeff E. Nelson)
Newsgroups: alt.graphics.pixutils,comp.graphics
Subject: wanted: ability to capture color X display and convert to greyscale Postscript
Keywords: xwd, xwdtoppm, X, Postscript, screen capture
Message-ID: <1990Dec6.114800@gauche.zko.dec.com>
Date: 6 Dec 90 16:48:00 GMT
Sender: news@shlump.nac.dec.com
Reply-To: jnelson@gauche.zko.dec.com (Jeff E. Nelson)
Followup-To: alt.graphics.pixutils
Organization: Digital Equipment Corporation
Lines: 23

I want to capture a Xwindows screen display in color and convert it to greyscale
Postscript. It appears that the pbmplus tools can do this:

	xwdtoppm file.xwd | ppmtopgm | pgmtops > file.ps

The problem is that I can't seem to locate an xwd that xwdtoppm likes. I did
find one, but when I ran it's output through xwdtoppm, I get the message:

	xwdtoppm: unknown XWD file version: 117440512

Assistance in accomplishing my goal of capturing a color display and converting
it to greyscale Postscript is greatly appreciated. I sorta assume xwd is the
"missing link," but if you have other ideas, please let me know.

In case it matters: this is on a DECstation 3100 running Ultrix 4.0 and the
DECwindows session and window managers. However, the xwd program I found was on
a VAX 6000-series machine running Ultrix 3.1; I pointed the DISPLAY variable
back to the DS3100 to perform the screen capture.

-Jeff E. Nelson
-Digital Equipment Corporation
-Internet: jnelson@tle.enet.dec.com
-Affiliation given for identification purposes only


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