本人正在写一个利用DirectShow capture video and audio 的程序,其中需用到ISampleGrabber接口,已经#include <qedit.h>,但Link的时候提示：
encoder_dshow.obj : error LNK2001: unresolved external symbol _IID_ISampleGrabber
encoder_dshow.obj : error LNK2001: unresolved external symbol _CLSID_NullRenderer
encoder_dshow.obj : error LNK2001: unresolved external symbol _CLSID_SampleGrabber
encoder_dshow.obj : error LNK2001: unresolved external symbol _IID_ISampleGrabberCB
Debug/encode_demo.exe : fatal error LNK1120: 4 unresolved externals

请问我该连接哪个LIB文件，谢谢!