Question: I converted a Visual C++ project to C++ Builder 5.0 and I’m getting unresolved external AnsiString.
Answer: The project conversion utility
vctobpr.exe defines the rule
USING_VCL in the converted project. This causes a problem when compiling Visual C++ projects that us MFC and ATL. The rule
USING_VCL can be defined in a number of places. What you need to do is grep for the rule and remove it.