asyncrdr.obj : error LNK2001: unresolved external symbol "public: virtual long __cdecl CBasePin::SetSink(struct IQualityControl *)" (?SetSink@CBasePin@@UAAJPAUIQualityControl@@@Z)
asyncrdr.obj : error LNK2001: unresolved external symbol "public: virtual long __cdecl CBasePin::Notify(struct IBaseFilter *,struct tagQuality)" (?Notify@CBasePin@@UAAJPAUIBaseFilter@@UtagQuality@@@Z)
asyncrdr.obj : error LNK2001: unresolved external symbol "public: virtual long __cdecl CBasePin::NewSegment(__int64,__int64,double)" (?NewSegment@CBasePin@@UAAJ_J0N@Z)
asyncrdr.obj : error LNK2001: unresolved external symbol "public: virtual 编译陆其明老师的《directshow开发指南》下的代码出现如此错误，我只贴出3个，不过此类错误有几十个，望达人指教
asyncrdr.obj : error LNK2001: unresolved external symbol "public: virtual long __cdecl CBasePin::Notify(struct IBaseFilter *,struct tagQuality)" (?Notify@CBasePin@@UAAJPAUIBaseFilter@@UtagQuality@@@Z)
asyncrdr.obj : error LNK2001: unresolved external symbol "public: virtual long __cdecl CBasePin::NewSegment(__int64,__int64,double)" (?NewSegment@CBasePin@@UAAJ_J0N@Z)
asyncrdr.obj : error LNK2001: unresolved external symbol "public: virtual 编译陆其明老师的《directshow开发指南》下的代码出现如此错误，我只贴出3个，不过此类错误有几十个，望达人指教
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