Controlling active display from another VI?

Hi,
I have a VI that needs to serve the purpose of selecting different display screens. The selction process is just one enumeration that should keep one screen up at a time, but I have no idea how to code it such that is the case. I could bring up the different subVI's in a case statement but is there any way to close them and re-open them without restarting the whole process? Please let me know if I'm not being really clear.

Well, this was my first answer on these forums, and I am a bit embarrassed since I could not get it to work the way I described. I do think it's possible the way I mentioned, but there is another way.
There is a 'close panel no abort.vi' in the labview\vi.llb\utility\victl.llb library that will let you close the displays. You will also need to set up the display vi's so that they open when called, but don't close when done.
I am attaching a simple example. If you can't read version 6.02, let me know and I will upload a version 5 example.
Good luck,
Bill Kemmerer
Attachments:
DisplayExample.llb ‏51 KB

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Attachments:
Enum Control.jpg ‏74 KB
Async Call.jpg ‏40 KB

djs_at_eaton wrote:
Your description:
The labview code has been evolved for a number of years now, by many different developers, and is in a word AWFUL. It is just about the the most complicated and convoluted code I have ever seen. What makes it even worse, is that there is no documentation whatsoever. Imagine trying to fix the engine of a car, with no instructions as to how any of the parts are supposed to work, and you get the idea.
sounds frighteningly familiar.
Unfortunately your situation is quite common. But I'm wondering if you couldn't simply have used normal LabVIEW techniques to call the code as a sub-VI.
I understand your misery. I've got code with a cluster of about 140 variables passed through a queue-driven case statement with over 100 cases. Each case can add any other cases to the execution queue. I'm not sure the original programmer understood it. I'm rewriting it.
Something like that, I would likely leave alone. You just don't know that something idepending on something that was coded incorrectly. You could end up chasing your tail.
edit
Unless, of course, that was the scope of the project.
/edit
Bill
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Controlling active display from another VI?

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