Hello Neko,
I don't know if it is still relevant, but I worked with this stuff some time ago. I had to implement the control of the Vector CAN Stress module into our measurement system because I was too lazy to convert everything that had already been done into CANoe CAPL. I did it within Borland C++ Builder using COM objects (not a COM port, for sure

). I spent several nights learning how to do it, but in the end, I realized how simple it is. Of course, I consulted with Vector support staff; they are very helpful, but unfortunately, they didn't have any usable examples in C++. But now the job is done, and I can share it with you if you still need it.
Best regards,
Vaclav.