error LNK2001: unresolved external symbol "__declspec(dllimport) const XXXX::`vftable'"
错误：error LNK2001: unresolved external symbol "__declspec(dllimport) const CXxxxxx::`vftable'" ([email protected]@[email protected])
建的类是导出类，以DLL扩展的方式导出，需要加宏_AFXEXT