360程序进度下载源码程序，例程结合易语言扩展界面支持库和多线程支持库，调用API函数实现360最新版本的下载。可以时时来定位当前的位置来显示(360, download the source code program. The routine combines the easy language extension interface support library and multi thread support library. The API function is called to realize the download of the latest version 360. It can be displayed at current position to display)