NetNews Usenet Archive 1992 #27/NN_1992_27.iso/spool/comp/sys/sgi/16553

Text File | 1992-11-17 | 1.7 KB | 46 lines

Newsgroups: comp.sys.sgi
Path: sparky!uunet!charon.amdahl.com!pacbell.com!sgiblab!sgigate!sgi!fido!zola!xcedrin.esd.sgi.com!daifuku
From: [e-mail] (Peter Daifuku)
Subject: Re: "imgsnap" capability from application
Message-ID: <[e-mail]>
Sender: [e-mail] (Net News)
Organization: Silicon Graphics, Inc.
References:  <[e-mail]>
Distribution: usa
Date: Tue, 17 Nov 92 21:20:36 GMT
Lines: 33

In article <[e-mail]>, [e-mail] (Dave Wiltzius) writes:
|>
|> I would like to capture all or portions of the screen display
|> from an application and write this to a file that could later
|> be displayed using, for example, "ipaste".  In essence, I would
|> like to have the "imgsnap" capability within the application but
|> without the user interaction (hence forking a process to run
|> imgsnap is not what I desire).
|>
|> I have everything working using a GLX window to cover the area
|> to capture and lrectread to get the image.  However, as soon as
|> this GLX window is managed, the images that are not drawn in RGB
|> have a strange color.
|>
|> I suspect I'm getting fouled up in the GL colormap vs the default
|> X colormap.
|>
|> What to do?  Some of the area under the aforementioned GLX window
|> is was not drawn by the application (and hence does not necessarily
|> share the same colormap).  However, all non-RGB windows have the
|> aforementioned problem.
|>
|> Thanks much.
|>   Dave Wiltzius
|>   Lawrence Livermore Nat'l Lab
|>   [e-mail]


See the manpage for readdisplay. It does what you want, without having to create
a screen-sized window.

Peter Daifuku
[e-mail]