该程序采用多线程技术来进行搜索，即遍历文件的过程中，每当发现一个文件夹时，就新建一个工作线程进行文件搜索-The program multi-thread technology to search, that is, the process of traversing documents, whenever found in a folder, then create a new thread to document the work of the search

MFC，本例采用多线程技术，即遍历文件的过程中，每当发现一个文件夹时，就新建一个工作线程进行文件搜索。-MFC, in this case multi-threading technology, that is, the process of traversing documents, whenever found in a folder, you create a new worker thread for file search.