每次重新安装Windows SDK，都需要手动编译Directshow的基类BaseClasses。这两个库文件是基于Windows SDK for Windows Server 2003 R2编译的，分别是Debug版本（strmbasd.lib）和Retail版本（strmbase.lib），可直接放在lib路径上，为新手节省配置环境的时间。-Each re-install Windows SDK, the compiler need to manually Directshow base class BaseClasses. The two library files is based on the Windows SDK for Windows Server 2003 R2 compiled are Debug version (strmbasd.lib) and the Retail version (strmbase.lib), can be directly on the lib path for the new environment of time-saving configuration .