要防止PDA闲置时电源自动关闭,可以从两种角度去思考, 常规做法是更改WinCE配置, 也就是修改电源闲置关闭时间的注册表键值, 然后激发一个事件重新加载这些配置, 这样做存在一个恢复的问题, 当我们的工作(同步)完成后需要恢复用户原来的配置, 那么我们换一角度去思考, 既然WinCE允许设置自动关闭时间, 那么WinCE系统中必然存在一个线程在指定时间后挂起系统(关闭电源), 这个线程一定有一个定时器-To prevent the PDA automatically turn off the power when idle, to think from two angles, the conventional approach is to change the WinCE configuration, that is, idle power off time change the registry key, and then trigger an event to re-load the configuration, do exist a recovery problem, when we work (sync) is completed need to restore the original configuration of the user, then we change a point of view and since the WinCE allow automatic closing time, then there must be a WinCE system after a specified time hanging thread from the system (power off), the thread must have a timer