Thank you Peter,
However, our problem is not interfacing the c++ dll from our C# application
but rather creating the c++ dll. As i mentioned, the purpose of this dll is
to create a wrapper around Windows Media Device Manger dll. According to the
Windows Media Device Manger documentation, interfacing with it can be done
obly with c++. When we take the sample code from the documentation and try to
compile it as a c++ .net class library, we get all kinds of errors (like
double pointers errors). So the question is how can a c++ class library can
be used to interface with a dll that requires staff like double pointers etc.