Public Module scanning
    Public Function scanImage() As Byte()
        Dim fileScanned As Integer = 0

        Dim filepath As String = String.Format("{0}\RXImage.png", Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData))
        EZTwain.SetAppTitle("Script Assist 9")
        Call EZTwain.SetVendorKey("RS Software", -469019609)
        Call EZTwain.SetHideUI(False)
        Call EZTwain.SetFileAppendFlag(False)
        Call EZTwain.SetMultiTransfer(False)
        If EZTwain.OpenDefaultSource() Then
            Call EZTwain.SetBlankPageMode(False)
            fileScanned = EZTwain.AcquireToFilename(System.IntPtr.Zero, filepath)
            If EZTwain.LastErrorCode <> 0 Then
                If EZTwain.LastErrorCode = EZTwain.EZTEC_USER_CANCEL Then
                    Throw New Exception("Scan Was Cancelled")
                End If

            End If
        End If
        Call EZTwain.ReportLastError("While trying to scan")

        Call EZTwain.CloseSource()

        'EZTwain returns 0 on filescan success
        If fileScanned = 0 Then
            Try
                Using fs As System.IO.FileStream = New System.IO.FileStream(filepath, IO.FileMode.Open, IO.FileAccess.Read)
                    Dim imagedata(fs.Length) As Byte
                    fs.Read(imagedata, 0, System.Convert.ToInt32(fs.Length))
                    fs.Close()
                    Return imagedata
                End Using
            Catch ex As Exception
                DevExpress.XtraEditors.XtraMessageBox.Show("There was an error with converting the image for the database")
                Clipboard.SetText(ex.ToString)
                Return Nothing
            End Try
        Else
            Return Nothing
        End If

    End Function
End Module