首先用Delphi来实现.delphi实现很简单.因为delphi的单元WinInet中就封装了该API调用的所有文档所以就简单多了.首先做一级面向对象的封装.一个对象TsetProxy,然后定义两个数据分别是代理主机和代理端口.然后一个负责调用的函数.-First use Delphi to achieve. Delphi achieve is very simple, because delphi unit WinInet encapsulates all the documents in respect of the API calls so much easier. First made level object-oriented package. An object TsetProxy, then define two data are the proxy host and proxy port. then responsible for a function call.