实现 软件登陆 用户管理 注册，增加删除用户-Implement software Login User registration.

易语言MySQL注册登录源码例程程序结合易语言扩展界面支持库和MySQL支持库，实现用户注册登录功能。-Easy language MySQL registration login source routine procedures combined with easy language extensions interface support library and MySQL support library, to achieve user registration login functi