DSHOW_Class 请参看压缩包内的东西，只是一个封装DShow的视频操作类，实际编译请安装dshow的SDK，同时需要自己下载视频编解码器，否则无法使用。改代码是在网上找的，经过了优化。-DSHOW_Class see things compressed within the package, but a package DShow class video operation, the actual compiler install dshow the SDK, also need to download a video codec, or can not use. Change the code on the Internet to find, it is optimized.