How do I know if an IMAQdx session is open or not?

I, me again.

I would like to know if there is a way to know if an IMAQdx session is already open or not. I did a Subvi, which manages part of imagery of a more complex software. My problem is simple: I need to open and close the session of IMAQdx. If I do this whenever my VI is called I have a delay of a few seconds and I don't really like it. So I thought that I could login the first time that my VI is called, to use with the session already open time and close when the main program, perhaps through a Boolean flag.

Thank you

Francesco.

I found a solution. I used the "not a number/path/Refnum?" function on the palette of "comparison". If the session is not open, but the function returns 'true', otherwise it return "false". Much more simple than I thought!

Tags: NI Software

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