ftp的文件下载（qt4平台C语言编写），与xp下使用的ftp下载差不多，界面没xp下好看，基本实现了文件的下载和上传-ftp file download (qt4 platform, C language), and use the ftp download xp or less the same under the good-looking interface, not xp, basically download and upload documents

利用QT界面编写TFTP客户端，实现文件的上传，下载(Using the QT interface to write TFTP client, to achieve the file upload, download)