对一个文件夹内的所有文件（包括子文件夹内）批量重命名的ＭＦＣ例子。包含了文件拷贝，覆盖，目录操作等知识。是文件操作的一个入门学习资料。-A folder of all files (including subfolders) to rename the MFC-volume example. Document contains the copy, cover, directory operations, such as knowledge. Document the operation of a