About the last bit, a long time ago I would use the ctypes library in Python to inspect, list, and call functions defined in .DLLs. All the symbol exports are right there in the object file, so for non-C++ callers you don't exactly need the source code to call functions. It doesn't seem like a large stretch to ask whether the same thing can be done with classes, or to expect that this particular aspect would have changed sometime in three iterations of the standard.
