[dllcall]演示 QueryPerformanceCounter(), 它提供了比 A_TickCount 的 10ms 更高的精确度.

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DllCall("QueryPerformanceCounter", "Int64*", CounterBefore)
Sleep 1000
DllCall("QueryPerformanceCounter", "Int64*", CounterAfter)
MsgBox % "Elapsed QPC time is " . CounterAfter - CounterBefore