waveInGetErrorText problem.

Hi all, I am having problem with the “waveInGetErrorText” and I want to solve it once and for all. The problem is that it doesn’t get the error message when Me._rc = 32 wich is WAVERR_BADFORMAT message. The function returns 0 indicating success? Can anyone take a look on this and tell what I am doing wrong. Here is my code:

This is the declaration

vb Code:

<DllImport("winmm.dll", EntryPoint:="waveInGetErrorTextA")> _
    Public Shared Function waveInGetErrorText( _
    ByVal mmrError As Integer, ByVal pszText As String, _
    ByVal cchText As Integer) As Integer
    End Function

and this is how I use it

vb Code:

Me._rc = WINMM.waveInOpen(Me._hWaveIn, Me._deviceID, waveFormat, New ProcDelegate(AddressOf waveInProc), 0, WINMM.CALLBACK_FUNCTION)
        If Me._rc <> WINMM.MMSYSERR_NOERROR Then
            Dim message As String = Space(200)
            Dim t As Integer = WINMM.waveInGetErrorText(Me._rc, message, message.Length)
            Throw New Exception(message)
            Return False
        End If

Thanks in advance.