Fwd: [python-win32] Using a COM interface where the objects don't have ProgIDs

[John Clark]

Okay - sorry for the interruption - banging at this for several more  
minutes gave me the direction I needed.  For anyone else out there  
struggling, I found that if I call

win32com.client.dynamic.Dispatch('{70107C62-8ABB-11D5-961B 
-0010A4F73DE4}')

and if I actually DO register the COM control, rather than just  
assuming that it's registered because the DLL exists ("Of course it is  
registered - the file is right there!  No one would place the file on  
the disk without actually registering the objects...") everything then  
seems to work as advertised (imagine that :)).

Well, I guess sometimes it just helps to talk it out in email.....

-John


On Mar 23, 2005, at 10:21 PM, John Clark wrote:

> My apologies if this is something that should be obvious to me, but I  
> cannot figure out how to use a typelib if that typelib does not  
> establish ProgID values for the CoClasses.
>
> The class that was created by EnsureModule() is as follows:
>
> class CaWHarvest(CoClassBaseClass): # A CoClass
> 	# CaWHarvest Class
> 	CLSID = IID('{70107C62-8ABB-11D5-961B-0010A4F73DE4}')
> 	coclass_sources = [
> 		_ICaWHarvestEvents,
> 	]
> 	default_source = _ICaWHarvestEvents
> 	coclass_interfaces = [
> 		ICaWHarvest,
> 	]
> 	default_interface = ICaWHarvest
>
> I have tried calling½ win32com.client.Dispatch(None, resultCLSID =  
> IID('{70107C62-8ABB-11D5-961B-0010A4F73DE4}')) but this returned a  
> 'Class Not registered' error.  I have searched the registry for the  
> above CLSID and have found entries, so to the best of my knowledge  
> this COM component is registered.  Beyond that I am afraid I have  
> exceeded my knowledge of COM & Python.
>
> My only experience with calling COM components from Python has been in  
> situations where the class has a ProgID that I would pass into  
> Dispatch() as the parameter... I suppose I could force a programmatic  
> ID by creating something in the registry, but it seems there should be  
> an answer without doing that.
>
> Could someone point me in the right direction?  I am sure I am just  
> missing something obvious.
>
> Thanks,
> -John_______________________________________________
> Python-win32 mailing list
> Python-win32 at python.org
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