I have fairly rudimentary question. In C++ when I load a DLL a pointer to this DLL stays "alive" untill the program exits. In LabView however when the VI that calls user DLL completes exections, the DLL "disappears" and when I need to make another call to that DLL I need to creat a new pointer to it and so on. Is there a way to keep the pointer to the user DLL from VI call to VI call? That is to say that the first VI for example call a class constructor in the DLL and the subsequent VIs call methods within this DLL. Let me know if I'm thinking too much like a C++ developer and not like a LabView.
Are you running VIs individually, or are you referring to calling VIs from a top-level VI that's kept running? A DLL is supposed to get unloaded when the VI that uses that DLL is unloaded (closed manually or via the VI Server). It also gets unloaded when LabVIEW quits (bviously). As for the actual operation, why is this important in your case? Are there static variables in the DLL?
