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Private Type LARGE_INTEGER LowPart As Long HighPart As Long End Type Private Declare Function QueryPerformanceCounter Lib "kernel32" (lpPerformanceCount As LARGE_INTEGER) As Long Private Declare Function QueryPerformanceFrequency Lib "kernel32" (lpFrequency As LARGE_INTEGER) As Long Private Declare Sub CopyMemory Lib "kernel32.dll" Alias "RtlMoveMemory" (Destination As Any, Source As Any, ByVal Length As Long) Private Sub Form_Load() 'KPD-Team 2001 'URL: http://www.allapi.net/ 'E-Mail: KPDTeam@Allapi.net Dim T As Long, liFrequency As LARGE_INTEGER, liStart As LARGE_INTEGER, liStop As LARGE_INTEGER Dim cuFrequency As Currency, cuStart As Currency, cuStop As Currency 'Retrieve the frequency of the performance counter If QueryPerformanceFrequency(liFrequency) = 0 Then MsgBox "Your hardware doesn't support a high-resolution performance counter!", vbInformation Else 'convert the large integer to currency cuFrequency = LargeIntToCurrency(liFrequency) 'retrieve tick count QueryPerformanceCounter liStart 'do something For T = 0 To 100000 DoEvents Next T 'retrieve tick count QueryPerformanceCounter liStop 'convert large integers to currency's cuStart = LargeIntToCurrency(liStart) cuStop = LargeIntToCurrency(liStop) 'calculate how many seconds passed, and show the result MsgBox "Time: " + CStr((cuStop - cuStart) / cuFrequency) + " seconds" End If End Sub Private Function LargeIntToCurrency(liInput As LARGE_INTEGER) As Currency 'copy 8 bytes from the large integer to an ampty currency CopyMemory LargeIntToCurrency, liInput, LenB(liInput) 'adjust it LargeIntToCurrency = LargeIntToCurrency * 10000 End Function |