Since CVI is an ANSI C compiler, you can't directly call any functions that require classes as parameters or that require you to instantiate a class before you can call a member function. The DLL functions may use classes internally, as long as the class is not your interface to the function. Many DLLs written with classes export C wrapper functions that can be called from a C compiler. If your doesn't, you'll have to use Visual Studio.Net to create your own wrapper functions. Those functions must pass all parameters acceptable to ANSI C, but may use classes internally.
