No-a-Ref does not work with audio files?

I use LabVIEW 2013 32 bit under W7 - 64.  When I open an audio file and you write for, for example ref is valid, Not-a-Refnum? function returns True.  Is this a limit known audio file?  The same is true with the example program OR 'His file to the Output.vi' when an audio file is opened in read mode.  The works of VI, but the Not-a-Refnum? is set to True.

DaveT

This is a known limitation. The screws of Sound do not use a real LabVIEW refnum, they take advantage of just the type of file refnum to conceal their own internel reference as a LabVIEW refnum That has the advantage that you can wire not accidentally other refnum or integer to these screws, but that it is not working with the primitive IsNotA Refnum(). The node RefnumToPath in any case never could work, even if these screws used a real refnum of LabVIEW, given refnum would be a refnum of Sound specific resource, not a file (normal file or datalog) Refnum, which is type single refnum where the Refnum of the function of the path runs on for pretty obvious reasons, like other resources in LabVIEW are not a valid path.

Tags: NI Software

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