在 Windows 的资源管理器窗口中，我们见过 WinZIP,WinRAR 等软件能在文件或文件夹的默认快捷菜单中添加几个菜单项，它可以使用户无须进入软件内部而直接在视窗中进行压缩/解压操作，十分方便用户操作，这无疑是一个较好的应用模型，它就是我们所说的Shell扩展技术。此源代码将以一个普通的源代码统计程序为例来说明怎样实现Shell扩展技术。-the Windows Resource Manager window, we have seen Photoshop, WinRAR software or documents in the default folder quick to add extra menu individual, it can save users from having access to the internal software directly in Windows for compression / decompression operation, it is very convenient for users, which undoubtedly it is a good application model, it is what we call the Shell extensions. This source will be a general source statistical procedures as an example to illustrate how to achieve the Shell extensions.