Passing object as param to Python COM server

[Graham Fawcett]

Following up to my own message, in case anyone else needs the answer
(or, more likely, I forget it and end up back at Google...)

You need to wrap the argument using win32com.client.Dispatch:

def QueryApp(self, app):
  #Name should be a valid attribute of a PowerPoint.Application
  app = win32com.client.Dispatch(app)
  print app.Name # or whatever else you want to do.


> Hi folks,
> 
> I've got a COM server written in Python, and it's running great (thank you to 
> EVERYONE who made this marvellous tech possible). But I've got a question 
> about passing parameters in method calls on my server.
> 
> I have a VB script in PowerPoint that creates an instance of my server. I'd 
> like to pass a reference to the PowerPoint application to my server, for 
> example:
> 
> 'in the PowerPoint macro,
> sub PassExample(pptapp as Application)
>   Set myserver = CreateObject("UWindsor.MyServer")
>   myserver.QueryApp pttapp 
> end sub
> 
> # in the server,
> def QueryApp(self, app):
>   #Name should be a valid attribute of a PowerPoint.Application
>   print app.Name
>   ...
> 
> Running the VB macro incurs an AttributeError: Name when the QueryApp method 
> is called.
> 
> The object (app) passed to my server is a PyIDispatch object. What do I have 
> to do to make my server recognize this as a PowerPoint.Application object so 
> that I can access its attributes (and hopefully invoke its methods)?
> 
> Apologies for my lack of what is probably basic COM knowledge. Thanks, 
> everyone.
> 
> -- Graham