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Calculating Time

Hi everybody,

I am establishing a connection using a dll. I need to know in milliseconds or nano seconds how long it is  taking to establish connection can anybody say how to perform this operation

Thanks in advance

1 Solution
TimCotteeHead of Software ServicesCommented:
Here is an  example of using GetTickCount api call to achieve this sort of thing:

Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (pDst As Any, pSrc As Any, ByVal ByteLen As Long)
Private Declare Function GetTickCount Lib "kernel32" () As Long
Private Sub Form_Load()
    'KPD-Team 1999
    Dim sSave As String, Cnt As Long, T As Long, Pos As Long, Length As Long
    Const mStr = "Hello "
    Length = Len(mStr)
    sSave = Space(5000 * Length) 'make buffer for justified comparison
    'Get the current tickcount
    T = GetTickCount
    Pos = 1
    sSave = Space(5000 * Length)
    For Cnt = 1 To 5000
      Mid(sSave, Pos, Length) = mStr
      Pos = Pos + Length
    Next Cnt
    'Show the results
    MsgBox "It took Visual basic" + Str$(GetTickCount - T) + " msecs. to add 5000 times a string to itself."
    'Get the current tickcount
    T = GetTickCount
    Pos = 0
    sSave = Space(5000 * Length)
    For Cnt = 1 To 5000
        CopyMemory ByVal StrPtr(sSave) + Pos, ByVal StrPtr(mStr), LenB(mStr)
        Pos = Pos + LenB(mStr)
    Next Cnt
    'Show the results
    MsgBox "It took CopyMemory" + Str$(GetTickCount - T) + " msecs. to add 5000 times a string to itself."
End Sub
>>in milliseconds or nano seconds<<
AFAIK, maximum accuracy is +/- 50 ms.

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