Hi There,
I am working on interfacing a USB device through a vendor supplied DLL. I was able to use the Shared DLL Import Wizard to get VIs set up for the exposed DLL functions. Many of the functions have pointers as function arguments, and I am confused as to why the VI shows both an input and an output for the pointer argument. I am not sure how to wire up the in/out node for the pointer argument to get what I need.
I am attaching a picture for reference as well.
I have a simple function prototype - SI_STATUS WINAPI SI_Open(DWORD dwDevice, HANDLE* cyHandle);
I am looking to receive a return value from the function as well as data from the pointer I am passing. When the Import Wizard VI is created, there is a parameter "cyHandle" input and a "cyHandle out" output created on the VI block diagram. (I noticed a similar type of setup in examples I found for Call Library Function Node). So to get my handle, do I need to hook up controls/indicators to just one or both? It is not clear to me how this is supposed to work.
Thank you.
Brian
