Dynamic Event Registration in Reentrant VI

[sumguy16]

I have a VI running two reentrant Clients.  The client uses a subVI (not reentrant) to handle keystrokes.  The client passes a VI refnum to the subVI to dynamically register the keydown event.  When I run the main VI I receive the FP not open error (1001).  I have made the subVI reentrant and did not change the error output, any ideas?

[Ben]

Bogus reply deleted by Ben.

Message Edited by Ben on 07-20-2007 02:05 PM

[Ben]

THen on second thought and re-reading...

I believe reentrant VI's share FP's.

Try using a template instead.

Ben

[sumguy16]

Thanks for the quick reply,

However, setting the subVIs to reentrant does not fix the problem.   I believe the FP that is being called in the error is the reentrant subVI.

Adam

[Ben]

Hi Adam,

I replaced your "This VI" constant with a "Open VI" that used a "This VI Path" constant and it worked.

I am not sure why the constant does not work.

Could someone else take a look and see if this is a bug or am I missing a sublty?

Ben

[sumguy16]

Is it possible that the constant refnum is a refnum to the disk instead of the clone?

Message Edited by sumguy16 on 07-20-2007 02:48 PM

[Ben]

I suspect a bug but since this stuff has changed with LV 8+, I want someone else to share their thoghts on this.

Ben

[sumguy16]

I have attached a modified VI testing the difference between the "This VI" refnum constant and the "This VI's path" -> open refnum constant.  The comparison equates both, but the hex values are different.  The FP 1001 error still occurs with the Dynamic event registration, the DER requires that the disk FP is open...Why? I don't know.

Odd show...

[AristosQueue (NI)]

This was reported to R&D (CAR 496I9700) and will be fixed in the next version of LabVIEW.
It was confirmed as a bug.

[Ben]

A big THANK YOU to Jason C. and Craig S. who Aristos attributed credit for finding this CAR!

Ben