CDirectoryTree is based off of CTreeCtrl and automatically fills itself in with the directory information. It does not display any files underneath the directories, only the directories themselves. As users change directories, only the current

仪表式显示控件，生产文件为DLL，添加为引用后可以使用。-Meter-type display control, production documentation for the DLL, add the following can be used as a reference.