[python-win32] Implementing a python com server that is used by a python client

[Mark Hammond]

On 2/03/2010 9:10 AM, Ulrich Mierendorff wrote:
> Hi,
>
> I have implemented a simple com server called "TestServer" using the
> following mail as an example
> http://markmail.org/message/vheujc2lijgwhhju#query:+page:1+mid:4lgd7lzzokglsckc+state:results
>
> (but without multi-threading support)
>
> Now I want to write a python client that should be able to connect to
> "TestServer" via COM and receive events. Connecting to the server and
> calling methods is easy: I just use win32com.client.Dispatch(..).
>
> As far as I know I have to use DispatchWithEvents if I would like to
> receive events. This requires makepy registration, so I created an
> idl-file for the server, compiled it with midl to a tlb file and
> compiled this with makepy to a python file.

You probably need to tell your server about the typelib being associated 
with your server - eg, look at the win32com\test\pippo_server.py - it 
includes the following information in the class:

     ### Link to typelib
     _typelib_guid_ = '{41059C57-975F-4B36-8FF3-C5117426647A}'
     _typelib_version_ = 1, 0
     _com_interfaces_ = ['IPippo']

Obviously your ids will be different, but this should be enough to allow 
your server to provide the typeinfo when requested by Python, and 
therefore allow clients to use it.

HTH,

Mark
>
> Now I thought everything should work. But it doesn't:
>
> Z:\extension\test>testclient.py
> <COMObject testproject.TestServer>
> Traceback (most recent call last):
> File "Z:\extension\test\testclient.py", line 28, in <module>
> server = win32com.client.DispatchWithEvents("testproject.TestServer",
> TestServerEventHandler)
> File "C:\Python26\lib\site-packages\win32com\client\__init__.py", line
> 256, in DispatchWithEvents
> raise TypeError("This COM object can not automate the makepy process -
> please run makepy manually for this object")
> TypeError: This COM object can not automate the makepy process - please
> run makepy manually for this object
>
> (I've attached a simple example client and server including the file
> generated by makepy)
>
> Others seem to have similar problems
> http://www.mail-archive.com/python-win32@python.org/msg02142.html
> http://mail.python.org/pipermail/python-win32/2008-November/008384.html
>
> but I can't find a solution. Is it impossible? If yes, is there another
> way to connect a python client to a python com server with events?
>
>
> -Ulrich
>
>
>
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