I have been successful in the past using COM from Python to control
ActiveX elements such as LabView programs and a few third-party device
servers. I recently tried to integrate a new component which came with
a LabView example and some Visual Basic sample code. The LabView example
works for me and I can examine the methods and properties of the server
but I can't seem to do anything with the server from Python.
I can successfully get an instance with:
>>>ps = Dispatch("PPServer.PPServerClass")
>>>ps
<win32com.gen_py.PPServer 1.0 Type Library.IPPServerClass instance at
0x20239664>
>>>cha = ps.ChannelA <--- Fails
and none of the expected methods or properties are exposed except those
seen in the attached genpy file.
The VB example shows:
Set pps = New PServer
cha = pps.ChannelA
I've tried various combinations, in Python, of ps.ChannelA, ps.Start()
etc and none of the documented methods or properties seem to work.
Any thoughts on how to proceed?
Thanks
Rob
# -*- coding: mbcs -*-
# Created by makepy.py version 0.5.00
# By python version 2.7 (r27:82525, Jul 4 2010, 09:01:59) [MSC v.1500 32 bit
(Intel)]
# From type library 'sniffpol.dll'
# On Wed Nov 03 09:43:53 2010
"""PPServer 1.0 Type Library"""
makepy_version = '0.5.00'
python_version = 0x20700f0
import win32com.client.CLSIDToClass, pythoncom, pywintypes
import win32com.client.util
from pywintypes import IID
from win32com.client import Dispatch
# The following 3 lines may need tweaking for the particular server
# Candidates are pythoncom.Missing, .Empty and .ArgNotFound
defaultNamedOptArg=pythoncom.Empty
defaultNamedNotOptArg=pythoncom.Empty
defaultUnnamedArg=pythoncom.Empty
CLSID = IID('{23D1AE21-8023-11D3-8D47-00C04F949D33}')
MajorVersion = 1
MinorVersion = 0
LibraryFlags = 8
LCID = 0x0
from win32com.client import DispatchBaseClass
class IPPServerClass(DispatchBaseClass):
"""IPPServerClass Interface"""
CLSID = IID('{23D1AE2F-8023-11D3-8D47-00C04F949D33}')
coclass_clsid = IID('{23D1AE30-8023-11D3-8D47-00C04F949D33}')
def AllowAutomaticSniffing(self):
"""method AllowAutomaticSniffing"""
return self._ApplyTypes_(1, 1, (12, 0), (),
u'AllowAutomaticSniffing', None,)
_prop_map_get_ = {
}
_prop_map_put_ = {
}
from win32com.client import CoClassBaseClass
# This CoClass is known by the name 'PPServer.PPServerClass.1'
class PPServerClass(CoClassBaseClass): # A CoClass
# PPServerClass Class
CLSID = IID('{23D1AE30-8023-11D3-8D47-00C04F949D33}')
coclass_sources = [
]
coclass_interfaces = [
IPPServerClass,
]
default_interface = IPPServerClass
IPPServerClass_vtables_dispatch_ = 1
IPPServerClass_vtables_ = [
(( u'AllowAutomaticSniffing' , u'pvarShow' , ), 1, (1, (), [ (16396,
10, None, None) , ], 1 , 1 , 4 , 0 , 28 , (3, 0, None, None) , 0 , )),
]
RecordMap = {
}
CLSIDToClassMap = {
'{23D1AE2F-8023-11D3-8D47-00C04F949D33}' : IPPServerClass,
'{23D1AE30-8023-11D3-8D47-00C04F949D33}' : PPServerClass,
}
CLSIDToPackageMap = {}
win32com.client.CLSIDToClass.RegisterCLSIDsFromDict( CLSIDToClassMap )
VTablesToPackageMap = {}
VTablesToClassMap = {
'{23D1AE2F-8023-11D3-8D47-00C04F949D33}' : 'IPPServerClass',
}
NamesToIIDMap = {
'IPPServerClass' : '{23D1AE2F-8023-11D3-8D47-00C04F949D33}',
}
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