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Re: Colors and Virtual Machine [message #49232 is a reply to message #49145]

Wed, 05 July 2006 10:10

Karl Schultz
Messages: 341
Registered: October 1999

Senior Member

On Mon, 03 Jul 2006 20:56:07 -0700, Phillip Bitzer wrote:

> I'm using 6.0, if that helps.

Yep. Quite important in this context.

> There must be something in the way VM is called that sets the device
> visual. Maybe someone out there knows a way to tell VM which visual to
> use.

OK, I think I got to the bottom of this.

Your program:

device, true_color=24
device, get_visual_name=state
print, state

runs ok in the VM on IDL 6.2. It reports DirectColor on IDL 6.0.

I think that was a bug that has been fixed between 6.0 and 6.2. When you
start the VM, it displays a splash screen where you click that button to
start runing the app. This splash screen caused the visual to get set to
DirectColor, which was a bug. So, there was no way for the app to select
a visual when running under the VM.

> I'll try that on my machine, but I was hoping to be able to package
> this program, which means that other users would have to do the same
> thing - more work than I want the end user to have to do.

Yes, agreed. It's just a weak workaround.

> One more thing- if I compile this thing in say IDL 6.2, will VM be able
> to interpet the program correctly? i.e., if I compile it in 6.2, and a
> user runs it in a IDL VM that is packaged with 6.0, will it find the
> correct visual?

No, a 6.0 VM would still have the bug. Your users would have to upgrade
their VM's.

Karl

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[Message index]

		Re: Colors and Virtual Machine By: Phillip Bitzer on Mon, 03 July 2006 20:56
		Re: Colors and Virtual Machine By: Karl Schultz on Mon, 03 July 2006 14:58
		Re: Colors and Virtual Machine By: Phillip Bitzer on Mon, 03 July 2006 11:12
		Re: Colors and Virtual Machine By: David Fanning on Sun, 02 July 2006 05:33
		Re: Colors and Virtual Machine By: Karl Schultz on Wed, 05 July 2006 10:10

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