说明: Windows 外壳扩展编程入门实例。第一篇 概述。第二篇 建立程序框架。第三篇 支持IShellExtInit接口。第四篇 支持IContextMenu接口。第五篇 加入注册/反注册ActiveXLibrary的功能。第六篇 加入图像预览功能 (Windows Shell Extension programming examples entry. First outlined. The second established procedural framework. The third support IShellExtInit interface. Fourth support IContextMenu interface. The fifth chapter by adding registration/ActiveXLibrary anti-registration functions. Part VI s accession to the image preview feature)