检查系统空闲时间的控件,在设定空闲时间自动触发事件,在空闲后有初次键盘鼠标动作触发另一事件,用于做单机版程序空闲安全保护或网络程序在空闲时断开,触发后再次连接-Check the system idle time control, set the idle time in the auto-trigger event, in the spare keyboard and mouse actions after the initial trigger another event, used for

倒计时，检查时间间隔，触发事件，利用timer实现-Countdown, check interval, the triggering event