[python-win32] Calling (D)COM Server from another PC

[Christian Junker]

Your explanation perfectly makes sense, Mr. Jorgensen.
Maybe I'll get the book you suggested, but for right now: Where is this InprocServer32 entry and how can I delete it?
And are there any other issues (local functionality or network issues) that could occur when this entry is missing.
Thanks anyway for all your replies up till now.
 
Another question I have is: Couldn't these programs possibly be reached with OLE Automation? Or does the command CreateOLEObject() not support any actions on another pc and I am stuck with DCOM? Is it right to say OLE 'inherits' from COM?
Still you see I have not got very much knowledge of all these concepts, but I am currently writing a documentation for OOo's (OpenOffice.org) ability to be accessed from 'outside' its own component model called UNO:
http://www.oooforum.org/forum/viewtopic.php?t=9815
 
If you have any suggestions or comments (or even if something is wrong in this text) then let me know.
 
Best regards
Christian Junker

-----Original Message-----
From: Jens B. Jorgensen [mailto:jens.jorgensen at tallan.com]
Sent: Monday, June 21, 2004 10:00 AM
To: Christian Junker
Cc: python-win32 at python.org
Subject: Re: [python-win32] Calling (D)COM Server from another PC


I have a bit of experience with this and I can tell you you're in for some fun. When I was doing something like this (not controlling IE but rather my own COM object) I found that if a COM object has a InprocServer32 entry on the machine you're running this on then your attempt to create an instance on a remote machine will succeed but in fact instead an instance is created on the local machine. In order to convince COM to actually create an instance on the remote machine you'd have to remove the InprocServer32 entry. This was my experience anyway.

Note that this has nothing to do with anything wrong with Python or anything like that. The code I was working with was in C++. If you haven't already done it you need to go out and get yourself a copy of Don  <http://www.amazon.com/exec/obidos/tg/detail/-/0201634465/qid=1087829698/sr=1-2/ref=sr_1_2/102-5830482-8566539?v=glance&s=books> Box' "Essential COM": The title ain't just kiddin'. For the kind of stuff you're talking about doing you'll need this level of understanding. The next thing you're probably going to find is that getting the permissions set such that you can create a graphical application on the logged-in user's desktop will be even more interesting. There's all sorts of security stuff that has to be in line for this kind of thing to happen. 


Christian Junker wrote:


Hello together,

this question might be foolish, but after quite some search I could not find

how to make use of DCOM with the current win32com package.

I tested out the DispatchEx which takes as its second parameter a 'machine',

probably either the hostname or the IP. I tried to invoke methods of the

Internet Explorer on other PCs in the network, and actually it worked (no

exception thrown), but on the target machine no changes could be seen

(IE.Visible=1 would make a IE Window visible but it didn't do anything on

the other pc).

So does someone of you know how to make use of DCOM, ie calling COM or OLE

objects on other PCs.



Thanks in advance.



Best regards

Christian









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Jens B. Jorgensen

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