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8-bit vs. 24-bit color on Windows [message #14103]

Fri, 22 January 1999 00:00

thompson
Messages: 584
Registered: August 1991

Senior Member

I know this question has been asked many times before, but I'm afraid I don't
remember what the answer is. Is there any way to convince IDL to use 8-bit
pseudo-color on a Windows computer with a 16-bit or higher display? I know
that in other operating systems this is done by using

DEVICE,PSEUDO_COLOR=8

However, this is not supported under Windows. I tried

DEVICE,DECOMPOSED=0

which the documentation claims will make routines work like they did before,
but this doesn't appear to be the whole story. With DECOMPOSED=0, data will
come up with the correct color, but only if they are displayed after the color
table is loaded. This is unacceptable. There must be another step to convince
IDL to use 8-bit pseudo-color, and if there isn't then RSI must address this.

I've checked David Fanning's Coyote Guide (http://www.dfanning.com/), but the
only suggestion I could find there that meets my needs is to set Windows to run
at 256 colors. I'm perfectly happy to do that, but it would be nice to be able
to use 16-bit or 24-bit for those programs which need it, and 8-bit color for
IDL. This is possible in other operating systems; can it be done in Windows?

William Thompson

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[Message index]

		8-bit vs. 24-bit color on Windows By: thompson on Fri, 22 January 1999 00:00
		Re: 8-bit vs. 24-bit color on Windows By: davidf on Thu, 28 January 1999 00:00
		Re: 8-bit vs. 24-bit color on Windows By: Liam Gumley on Thu, 28 January 1999 00:00
		Re: 8-bit vs. 24-bit color on Windows By: thompson on Wed, 27 January 1999 00:00
		Re: 8-bit vs. 24-bit color on Windows By: davidf on Wed, 27 January 1999 00:00
		Re: 8-bit vs. 24-bit color on Windows By: thompson on Wed, 27 January 1999 00:00
		Re: 8-bit vs. 24-bit color on Windows By: Martin Schultz on Fri, 29 January 1999 00:00
		Re: 8-bit vs. 24-bit color on Windows By: steinhh on Fri, 29 January 1999 00:00
		Re: 8-bit vs. 24-bit color on Windows By: Phillip & Suzanne on Tue, 09 February 1999 00:00

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