error LNK2001: unresolved external symbol _IID_ISampleGrabberCB

DIRECTSHOW编译问题

Linking...

1> Creating library Release/VideoCap.libandobject Release/VideoCap.exp

1>VideoCapCtrl.obj : error LNK2001: unresolvedexternal symbol _IID_ISampleGrabberCB

1>VideoCapCtrl.obj : error LNK2001: unresolvedexternal symbol _IID_IBaseFilter

1>VideoCapCtrl.obj : error LNK2001: unresolvedexternal symbol _CLSID_VideoInputDeviceCategory

1>VideoCapCtrl.obj : error LNK2001: unresolvedexternal symbol _CLSID_SystemDeviceenum

1>VideoCapCtrl.obj : error LNK2001: unresolvedexternal symbol _IID_ICreateDevenum

1>VideoCapCtrl.obj : error LNK2001: unresolvedexternal symbol _IID_IMediaEvent

1>VideoCapCtrl.obj : error LNK2001: unresolvedexternal symbol _IID_IMediaControl

1>VideoCapCtrl.obj : error LNK2001: unresolvedexternal symbol _CLSID_FilterGraph

1>VideoCapCtrl.obj : error LNK2001: unresolvedexternal symbol _IID_IGraphBuilder

1>VideoCapCtrl.obj : error LNK2001: unresolvedexternal symbol _CLSID_CaptureGraphBuilder2

1>VideoCapCtrl.obj : error LNK2001: unresolvedexternal symbol _IID_ICaptureGraphBuilder2

1>VideoCapCtrl.obj : error LNK2001: unresolvedexternal symbol _IID_ISampleGrabber

1>VideoCapCtrl.obj : error LNK2001: unresolvedexternal symbol _PIN_CATEGORY_CAPTURE

1>VideoCapCtrl.obj : error LNK2001: unresolvedexternal symbol _MEDIATYPE_Video

1>VideoCapCtrl.obj : error LNK2001: unresolvedexternal symbol _CLSID_NullRenderer

1>VideoCapCtrl.obj : error LNK2001: unresolvedexternal symbol _CLSID_SampleGrabber

1>VideoCapCtrl.obj : error LNK2001: unresolvedexternal symbol _CLSID_VideoRenderer

1>VideoCapCtrl.obj : error LNK2001: unresolvedexternal symbol _CLSID_SmartTee

1>Release/VideoCap.ocx : fatal error LNK1120: 18 unresolvedexternals

解决办法：工程-> 设置-> link (对象/模块库)中加入strmiids.lib   即可。