| Re: How to display image on X root window? [message #22489] |
Mon, 20 November 2000 00:00 |
Martin Schultz
Messages: 515
Registered: August 1997
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Senior Member |
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"David G. Grier" wrote:
>
> Hi Folks,
>
> Is there a straightfoward way to get IDL to display an image on the
> root window of an X display?
> I have something in mind along the lines of xloadimage -onroot
>
> Alternatively, is there a way to open an IDL window with no borders
> or title bar?
>
> Finally, is there a way to open an IDL window on an alternate
> display? Again, I have something
> in mind along the lines of xloadimage -onroot -display :0.1 .
>
> Thanks in advance,
>
> David
>
> P.S. My problem getting IDL 5.3/5.4 to work under Mandrake Linux 7.2
> isn't solved yet.
> RSI suggested switching to RedHat 7.0, but I'm looking for a better
> solution.
>
> --
> ============================================================ =============
> David G. Grier Dept of Physics, James Franck Institute, and
> (773) 702-9176 (voice) Institute for Biophysical Dynamics
> (773) 702-5863 (FAX) The University of Chicago
> d-grier@uchicago.edu 5640 S. Ellis Ave
> http://griergroup.uchicago.edu/~grier/ Chicago, IL 60637
> ============================================================ =============
If you use KDE, putting an image on the root window won't do you much
good, for if you change your desktop and back again, it will be
overwritten with the old background. However, you can exploit this
feature, define a background image in KDE and overwrite this image
file from IDL. I do this to load "current" (i.e. today's) satellite
images on my background. Only that I barely ever see them because of
all these open windows. Time for a 64" monitor ;-)
Cheers,
Martin
--
[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[ [[[[[[[
[[ Dr. Martin Schultz Max-Planck-Institut fuer Meteorologie [[
[[ Bundesstr. 55, 20146 Hamburg [[
[[ phone: +49 40 41173-308 [[
[[ fax: +49 40 41173-298 [[
[[ martin.schultz@dkrz.de [[
[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[ [[[[[[[
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| Re: How to display image on X root window? [message #22491 is a reply to message #22489] |
Sat, 18 November 2000 23:34  |
Craig Markwardt
Messages: 1869
Registered: November 1996
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Senior Member |
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"David G. Grier" <grier@fafnir.uchicago.edu> writes:
> Hi Folks,
>
> Is there a straightfoward way to get IDL to display an image on the
> root window of an X display?
> I have something in mind along the lines of xloadimage -onroot
>
> Alternatively, is there a way to open an IDL window with no borders
> or title bar?
You can probably accomplish this by creating a window the exact size
of the display. Here is some code to do that:
IDL> device, get_screen_size=screenxy
IDL> window, 0, xsize=screenxy(0), ysize=screenxy(1)
On my Linux at least, the border is there, but appears off-screen, so
the full screen real-estate is taken by the IDL graphics window. Also
a user can move the window and resize it.
As for a way to open a window on another display, that may be
trickier. If you can, you should set the DISPLAY variable before
calling IDL. You might also try doing
setenv, 'DISPLAY=:0.1'
However when I tried this, a license error came up [ IDL thinks you
are trying to bypass the one-machine, one-license restriction.
Commercial software, harumph! ]
Craig
--
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Craig B. Markwardt, Ph.D. EMAIL: craigmnet@cow.physics.wisc.edu
Astrophysics, IDL, Finance, Derivatives | Remove "net" for better response
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