Any postings of suggested solutions, lacking simple reproducer, are to be treated as hints as to the solution you should take. Meaning, the working solution may require a little rework on your part.
The suggestion I made outlined how you might structure your interface such that you would not need to decorate the many CALL's to your C++ code in your program.
By the way. I do not have a PhD in computer science. In fact, I've never taken a computer science course (or programming class). In college (1967-1971) I self-learned programming, became a teaching assistant for computer science classes, and also taught computer programming at a local high school. Because I was, to some extent, teaching the CS classes, the college wouldn't let me take the classes. Hence, I do not have a computer science degree. In 1972 I began working at Digital Equipment Corporation as a software support engineer. In 1974 I left to join a different company and wrote my first operating system, a multi-user virtual memory system. In 1976 I left there to form my first computer software/hardware company and wrote another much improved multi-user operating system. And between then and now I formed a small handful of computer software/consulting companies. You can call me Jim (without the Dr.)
Jim
