长时间对着电脑屏幕，对身体不益。本程序可以设置定时提醒用户活动活动。 主要使用了，定时器 ， 开机启动 ， 最小化到托盘，等代码可供借鉴参考-Long time facing the computer screen, do not benefit the body. This procedure can be set from time to time to remind the user activity activity. Mainly used, timer, start-up, m