LARGE_INTEGER liCount1; LARGE_INTEGER liCount2; LARGE_INTEGER liFrequency; double fSeconds; //你的其他代码... //时间点１(例如按某个button的时间) QueryPerformanceCounter(&liCount1); //你的其他代码... //时间点２(例如某事件完成的时间) QueryPerformanceCounter(&liCount2); QueryPerformanceFrequency(&liFrequency);//每秒记数 fSeconds=(double)(liCount2.QuadPart -liCount1.QuadPart )/(double)liFrequency.QuadPart; //时间点２和时间点１之间的精确秒数