RefNum null

Hi all

I have a very simple question, I need an expression to detect a null refnum.

I'll send the TestStand StationGlobals.TS.CurrentUser.LoginName for the user through the FrontEndCallback.seq by using the UIMessage Interface. There are times where the StationGlobals.TS.CurrentUser does not exist (i.e. when the user click on the button 'Cancel' in the connection dialog box). I want to detect this situation by checking whether the StationGlobals.TS.CurrentUser is a null refnum. I tried the following expression as

StationGlobals.TS.CurrentUser is nothing

or

StationGlobals.TS.CurrentUser is nothing

but all do not work.

Can someone tell me please the expression to detect a null refnum?

Thanks for reading

chati

Sorry, didn't read your post correctly...

StationGlobals.TS.CurrentUser is the type container. To check if it has been created, you can use the API PropertyExists function

Tags: NI Software

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