It would be nice to have a callback to register when a VI is unloaded from memory.
I normaly use FGV pattern to encapsulate my instruments. I would be neet to register a "close" VI when you initilize the FGV VI and then when the FGV is unloaded the close VI closes the refereances (and transform the instrument to a safe state).
To conclude I want a similar way to C++ destructor.
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