How to create predefined session setup for high-volume scanner

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ActiveX allows to load/save predefined session setups for mid- and high-volume scanners.

Example: Here is an example that shows how to get the current device settings as byte array.

VB.NET

Private VSTwain1 As New VintaSoftTwain()


''' <summary>
''' Returns the device settings as byte array.
''' </summary>
Private Function GetDeviceSettingsAsByteArray() As Byte()
    ' open the device manager
    If Not VSTwain1.DeviceManager_Open() Then
        Throw New ApplicationException(VSTwain1.errorString)
    End If

    ' open the device
    If Not VSTwain1.Device_Open Then
        Throw New ApplicationException(VSTwain1.errorString)
    End If

    ' get device settings as byte array
    Dim settings As Byte() = CType(VSTwain1.Device_GetSettings(), Byte())
    Return settings
End Function

Example: Here is an example that shows how to load previously saved device settings into the device.

VB.NET

Private VSTwain1 As New VintaSoftTwain()


''' <summary>
''' Returns the device settings as byte array.
''' </summary>
Private Sub LoadDeviceSettingsAsByteArray(settings As Byte())
    ' open the device manager
    If Not VSTwain1.DeviceManager_Open() Then
        Throw New ApplicationException(VSTwain1.errorString)
    End If

    ' open the device
    If Not VSTwain1.Device_Open Then
        Throw New ApplicationException(VSTwain1.errorString)
    End If

    ' set device settings
    If Not VSTwain1.Device_SetSettings(settings) Then
        Throw New ApplicationException(VSTwain1.errorString)
    End If
End Sub

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