抽奖系统的实现，实现了无规律随机且不重复的功能，在右下方的TEXT中输入“关闭”即可关闭程序。点击程序窗体任意一处都可执行程序。-Implementation of lottery system, realized the irregular random and non repeating function, input close to close the program in the lower right corner of the TEXT. Click on any point