Public Declare Function QueryPerformanceCounter Lib "kernel32" Alias "QueryPerformanceCounter" (lpPerformanceCount As LARGE_INTEGER) As LongPublic Declare Function QueryPerformanceFrequency Lib "kernel32" Alias "QueryPerformanceFrequency" (lpFrequency As LARGE_INTEGER) As LongPublic Type LARGE_INTEGER lowpart As Long highpart As Long End Type在进行定时之前,先调用QueryPerformanceFrequency()函数获得机器内部定时器的时钟频率, 然后在需要严格定时的事件发生之前和发生之后分别调用QueryPerformanceCounter()函数,利用两次获得的计数之差及时钟频率,计算出事件经历的精确时间。定时误差不超过 1 微秒,精度与 CPU 等机器配置有关。
lowpart As Long
highpart As Long
End Type在进行定时之前,先调用QueryPerformanceFrequency()函数获得机器内部定时器的时钟频率, 然后在需要严格定时的事件发生之前和发生之后分别调用QueryPerformanceCounter()函数,利用两次获得的计数之差及时钟频率,计算出事件经历的精确时间。定时误差不超过 1 微秒,精度与 CPU 等机器配置有关。
LARGE_INTEGER值 = Currency值 * CDec(10000)
我正想要...
用Time好像只能到秒啊