网络注册登录源码程序，结合易语言扩展界面支持库和互联网支持库，实现网络登录的注册码验证。代码清晰易懂，功能完美，账号安全，同一个用户不可重复登录。(Network Sign source program, combined with easy language support library expansion interface and Internet support library that implements the registration code verification network login. )