Horstmuc PathLen

PathLen预计的路径作为参数，并显示一个消息框，路径信息和长度。如果给出一个目录路径，结构中的最长的路径。可选提示打开文件夹（资源管理器窗口）

PathLen expects a path as parameter, and displays a message box with path information and length. If a directory path is given, the longest path in the structure is reported. Optional prompt to open folder (Explorer window)