一个小巧好用的互联网在线更新工具，使用FTP下载，可以自行配置FTP服务器信息(当然为了安全起见可以直接写到程序中,以便分发).支持显示下载进度，下载后支持即时执行更新，也可以自定义启动程序。主要这个代码不复杂，比较方便易用，没有其他第三方控件和API函数，在线更新的功能都具有。-A small, easy to use Internet online update tool, using FTP to download, you can self-configure the FTP server information (of course, for security reasons can directly write the program for distribution). Support the display download progress, download the update immediately after the support can also be custom boot process. This code is not the main complex, more convenient to use, there is no other third-party controls and API functions, online update feature have.