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Tip of the Day
Language: VB5,VB6
Expertise: Intermediate
Feb 28, 2001



Building the Right Environment to Support AI, Machine Learning and Deep Learning

Determine the total playing time of an Audio CD

The Microsoft Multimedia Control lets you easily determine the total playing time of an Audio CD: you only need to correctly initialize the control and then decipher the value returned by its Length property. Use the following code as a guideline for your routines:

Private Sub cmdDisplayTime_Click()
    Dim Value As Integer
    Dim TotalTime As String
    With MMControl1
        ' Initialize the Multimedia control
        .DeviceType = "CDAudio"
        .TimeFormat = 10
        .Command = "Open"
        ' seconds are held in the most significant byte
        Value = (.Length \ 256) And 255
        TotalTime = Right$("0" & CStr(Value), 2) & """"
        ' minutes are held in the least significant byte
        Value = (.Length And 255) Mod 60
        TotalTime = Right$("0" & CStr(Value), 2) & "' " & TotalTime
        Value = (.Length And 255) \ 60
        If Value > 0 Then
            ' display hour value only if necessary
            TotalTime = CStr(Value) & "h " & TotalTime
        End If
        MsgBox TotalTime
    End With
End Sub

Francesco Balena
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