说明：  DirectShow—微软Directx开发包之一。DirectX软件开发包是微软公司提供的一套在windows操作平台开发高性能图形，声音，输入，输出和网络游戏的编程接口。本书就介绍了DirectShow。
(Microsoft DirectX DirectShow-one kit. DirectX software development kit is provided by a set of Microsoft windows operating platform in the development of high-performance graphics, sound, input, output and network game programming interfaces. This book on the introduction of DirectShow.)