How to tell if top level vi is loaded from a project?

[FireFist-Redhawk]

Hmm... I'm seeing something different than that on 2017. I can't get the string "Main Application Instance" no matter what I put where or what's open. I either get the the name of the last project I clicked on if one or more projects is open, or Not a Refnum and therefore error 1055 if no project is open.

[FireFist-Redhawk]

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wiebe@CARYA wrote:

How about this (even simpler):

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That is what I was about to suggest, I think this will work for the OP.

EDIT: Clear the error coming out of the property node or you get this:

Spoiler

[_Bryan]

Thanks for the help!

I marked Wiebe's post as the solution, but I will will give Redhawk an honorable mention for clearing the error.

I was able to use the snippet to get the code.  But it took a few minutes to figure out that the scripting property nodes are inside the regular property nodes so I could recreate it myself.   I thought all the scripting functions would all be in the VI Scripting palette.

Thanks again.