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vb.net and/or c#.net wrapper for dwf.dll

Go to solution Solved by Tetus,


Just downloaded Waveforms and would like to use the dwf.dll in a vb.net program. When trying to include the dll as a reference I get an error that it is not recognized as a valid COM component or assembly.

Do you have a compatible wrapper or other suggestion?


Regards mijq

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Got a little further:

Imports System.Runtime.InteropServices

Public Class frmMain
    Public Shared Function FDwfDeviceOpen(ByVal idxDevice As Integer, ByRef phdwf As IntPtr) As Integer
    End Function
    Dim hdwf As IntPtr
    Private Sub frmMain_Load(sender As Object, e As System.EventArgs) Handles Me.Load
            FDwfDeviceOpen(-1, hdwf)
        Catch ex As Exception
        End Try

    End Sub
End Class


It seems that the <DllImport..> works, but the program throws an exception: 

A call to PInvoke function 'testAnalogDiscovery2!testAnalogDiscovery2.frmMain::FDwfDeviceOpen' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature.


Please advise

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