本程序用WTL编写，运用了HOOK，模态对话框转为非模态（标准FileDialog)，窗体分隔， ShellExtension(context menu),ATL COM等编程技术，并附有全部源码. -WTL prepared by this procedure, the use of the HOOK, to non-modal dialog mode (standard FileDialog), form separate, ShellExtension (context menu)