| Re: Colour table, multiple sessions [message #29843 is a reply to message #29839] |
Thu, 21 March 2002 06:37   |
Randall Skelton
Messages: 169
Registered: October 2000
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Senior Member |
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This is probably becuse the first instance of an IDL direct graphics
window is using all of the colors on your 8-bit graphics head. A similar
problem will occur if you run netscape and IDL simultaneously on such a
machine.
In brief, the Xwindow colormap associated with a window is used to display
the contents of the window; each pixel value indexes the colormap to
produce an RGB value that is scaled by the X server to match the display
hardware and these scaled values drive the guns of a monitor. Depending on
hardware limitations, one or more colormaps can be installed at one time
so that windows associated with those maps display with true colors.
Your hardware will only allow one colormap to be displayed, so either
upgrade your video card or live with the limitation.
On Thu, 21 Mar 2002, Reimar Bauer wrote:
> trouble wrote:
>>
>> Yo,
>>
>> When I open 2 IDL sessions on the same workstation and open a window,
>> the colours in the the 2nd window are screwed and the screen flicks
>> into "reverse video"(?) [ie. black->white, white->black] when passing
>> the mouse over it. Is there a remedy? I played with DEVICE for a while
>> but after multiple crashes, concluded that didn't know what I was
>> doing... (oh really?)
>>
>> I was wondering if anyone has a quick fix, something to put in
>> IDL_STARTUP maybe?
>>
>> Currently on Unix Tru64, IDL 5.4.
>>
>> Ciao.
>
> Dear trouble
>
>
> How is your graphics card configured?
> Normally this behaviour is given with 8 bit color mode.
>
>
> Reimar
> --
> Reimar Bauer
>
> Institut fuer Stratosphaerische Chemie (ICG-I)
> Forschungszentrum Juelich
> email: R.Bauer@fz-juelich.de
> ------------------------------------------------------------ -------
> a IDL library at ForschungsZentrum Juelich
> http://www.fz-juelich.de/icg/icg1/idl_icglib/idl_lib_intro.h tml
> ============================================================ =======
>
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