I wrote a serial comm server DLL using ATL (MS C++ Ver. 6). A test program using VB 6 works fine - I can pass and receive BSTRs (Unicode) back and forth.

Things aren't so easy when VFP8 is the client. I can send a BSTR from FoxPro to the server DLL if the server method takes a BSTR argument (but not if the server method takes a BSTR* argument).

I'd like to be able to pass a variable length Unicode BSTR back to FoxPro because I can't tell in advance how long the string will be. The prototype for my C++ method that returns the string to FoxPro is:

STDMETHODIMP CSerialClass::GetSerialData(BSTR* sData);

Is there a way to do this. I saw somewhere in the documentation that FoxPro does not support Unicode (if this is true, then why does Microsoft push Unicode as the next frontier?)