[python-win32] using a COM interface with [in, out]

[Rex Corrovan]

The problem was actually that the COM interface had not been fully 
implemented. The API was just bouncing back input. The COM server is not 
mine, I am just required to write code against it. The fact that this API 
was not fully implimented was not apparent until I started delving into the 
VB code of the server.

Communication here is not at an all time high :)

The few things I did figure out is that if the API has [in, out] params, 
where in is never actually used, you can just send it junk and it will 
return the values as it normally does.

retval, return1, return2 = o.testFunc(realval, junkval1, junkval2)

Where real val is a required input or an [in], and junkval1 and junkval 2 
are [in, out] and meant to return data. retval has the HRESULT and return1 
has the return data from the junkval1 [in, out] and return2 has the returned 
data from the junkval2 [in,out].

Might be obvious to some, but for those of us just trying to make heads or 
tails of COM programming, the subtlties in things like this can get you.


From: Tim Roberts <timr at probo.com>
To: Python-Win32 List <python-win32 at python.org>
Subject: Re: [python-win32] using a COM interface with [in, out]
Date: Wed, 24 Jan 2007 17:47:14 -0800

Rex Corrovan wrote:
 > Nevermind, I am an idiot, figured out my problem. Sorry to bother.

What was the problem?  You can help the next guy trying to do this.

--
Tim Roberts, timr at probo.com
Providenza & Boekelheide, Inc.

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