Introduction - If you have any usage issues, please Google them yourself
Multi-threaded download principle is not complicated, the two main technology is multi-threaded and breakpoints download. Program open multiple threads, each use of the breakpoint download, respectively, in different parts of the file download, download after the merger, on it. Multithreaded programming has been introduced many books are not repeated here, on breakpoint download, CInternetFile MFC class provided enables HTTP breakpoint download, but can not achieve breakpoint FTP downloads.