用VC++编程，比较三种定时器——SetTimer、timeSetEvent、、QueryPerformanceCounter、GetTickCount的在精度上的差别-Using VC++ programming, comparing three types of timers- SetTimer, timeSetEvent,, QueryPerformanceCounter, GetTickCount the difference in accuracy

通过多媒体定时器，timeSetEvent函数高精度时间计算。-Through the multimedia timer, timeSetEvent function high-precision time.