#define MAKE_MEDIA_PATH(pFileName) (TEXT("C:\\LEADTOOLS 17.5\\Media\\")TEXT(pFileName)) void OnCopyBufferToFile(ILMDVRSink* pSink) { BSTR targetFile = ::SysAllocString(MAKE_MEDIA_PATH("CapturedVideo.MPG")); double startPos; double endPos; pSink->CopyBufferToFile(targetFile, startPos, endPos); ::SysFreeString(targetFile); }