[python-win32] How to implement a callback COM object

[Michael Bode]

Hi,

I've problems to get started with COM programming. I'm trying to write a
COM client which uses a COM server controlling an instrument (power
meter). The COM Server is using a DLL called FieldMax2ServerDLL which is
registered. I've run makepy to get the bindings. Now to do anything
useful with the server I have to implement a callback object which
implements an interface from said DLL. I have VB sample code, but don't
know how to translate that to python:

Option Explicit

Implements IFM2DeviceEvents

Private m_CallbackEvent As String
Private m_CallbackMessage As String
Private m_DeviceIndex As Integer
Private m_SerialNumber As String
Private m_ZeroDeviceTimeoutCounter As Integer

' Methods

Private Sub IFM2DeviceEvents_DisplayErrorToClient()
    frmTest.DisplayErrorMessage m_CallbackMessage
End Sub

Private Sub IFM2DeviceEvents_NotifyData(ByVal CallbackData As
IFM2DeviceEvents)
    frmTest.NotifyData CallbackData
End Sub

Private Sub IFM2DeviceEvents_NotifyDeviceStatus(ByVal CallbackData As
IFM2DeviceEvents, ByVal DevicesList As cFM2Devices)
    frmTest.NotifyDeviceStatus CallbackData, DevicesList
End Sub

Private Sub IFM2DeviceEvents_DisplayZeroDeviceProgressToClient()
    frmTest.DisplayZeroDeviceProgress m_CallbackMessage,
m_ZeroDeviceTimeoutCounter
End Sub

' Read/write properties

Private Property Let IFM2DeviceEvents_CallbackEvent(ByVal RHS As String)
    m_CallbackEvent = RHS
End Property

Private Property Get IFM2DeviceEvents_CallbackEvent() As String
    IFM2DeviceEvents_CallbackEvent = m_CallbackEvent
End Property

...



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