高手请看！

daoshou

请各位高手帮忙看看如下是什么错误：
TestDialog.obj : error LNK2001: unresolved external symbol "public: virtual int __thiscall CATMfErrUpdate::IsCycleDetected(void)const " (?IsCycleDetected@CATMfErrUpdate@@UBEHXZ)
TestDialog.obj : error LNK2001: unresolved external symbol "public: virtual void __thiscall CATMfErrUpdate::GetErrorTable(unsigned int *,class CATErrDsc const * *)" (?GetErrorTable@CATMfErrUpdate@@UAEXPAIPAPBVCATErrDsc@@@Z)
TestDialog.obj : error LNK2001: unresolved external symbol "public: virtual class CATError * __thiscall CATMfErrUpdate::CloneSelf(void)" (?CloneSelf@CATMfErrUpdate@@UAEPAVCATError@@XZ)
TestDialog.obj : error LNK2001: unresolved external symbol "public: virtual class CATUnicodeString  __thiscall CATMfErrUpdate::GetNLSDiagnostic(void)" (?GetNLSDiagnostic@CATMfErrUpdate@@UAE?AVCATUnicodeString@@XZ)
TestDialog.obj : error LNK2001: unresolved external symbol "public: virtual int __thiscall CATMfErrUpdate::IsAKindOf(char const *)const " (?IsAKindOf@CATMfErrUpdate@@UBEHPBD@Z)
TestDialog.obj : error LNK2001: unresolved external symbol "public: virtual char const * __thiscall CATMfErrUpdate::IsA(void)const " (?IsA@CATMfErrUpdate@@UBEPBDXZ)
TestDialog.obj : error LNK2001: unresolved external symbol "public: virtual class CATMetaClass * __stdcall CATMfErrUpdate::GetMetaObject(void)const " (?GetMetaObject@CATMfErrUpdate@@UBGPAVCATMetaClass@@XZ)
TestDialog.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) public: void __cdecl CATMfErrUpdate::SetDiagnostic(int,char const *,...)" (__imp_?SetDiagnostic@CATMfErrUpdate@@QAAXHPBDZZ)
TestDialog.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) public: __thiscall CATMfErrUpdate::CATMfErrUpdate(void)" (__imp_??0CATMfErrUpdate@@QAE@XZ)
TestDialog.obj : error LNK2001: unresolved external symbol "private: void __stdcall CATBody_var::__CastTo(struct IUnknown *)" (?__CastTo@CATBody_var@@AAGXPAUIUnknown@@@Z)
TestDialog.obj : error LNK2001: unresolved external symbol "private: void __stdcall CATIShapeFeatureBody_var::__CastTo(struct IUnknown *)" (?__CastTo@CATIShapeFeatureBody_var@@AAGXPAUIUnknown@@@Z)
TestDialog.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) public: virtual __thiscall CATMfErrUpdate::~CATMfErrUpdate(void)" (__imp_??1CATMfErrUpdate@@UAE@XZ)