[IronPython] Newbie InterOp-related question

Vernon Cole vernondcole at gmail.com
Wed Mar 30 17:39:10 PDT 2011


x = my_goofy_routine()
print repr

Vernon Cole
(sent from my 'droid phone)

On Mar 30, 2011 1:27 PM, "Tilley, Paul" <Paul.Tilley at honeywell.com> wrote:
> Thanks Markus,
>
>
>
> I'll use the info to try to figure out how things will work in my actual
real world example. That involves the return of 4 or 5 arrays of strings and
ints (horrible API I'm dealing with)
>
>
>
> Paul
>
>
>
> From: Markus Schaber [mailto:m.schaber at 3s-software.com]
> Sent: Wednesday, March 30, 2011 12:42 AM
> To: Discussion of IronPython
> Subject: Re: [IronPython] Newbie InterOp-related question
>
>
>
> Hi, Paul,
>
>
>
> it's documented at
http://ironpython.net/documentation/dotnet/dotnet.html#ref-and-out-parameters.

>
>
>
> The out parameter will be mapped as an additional return value.
>
>
>
> So if myComObj.foo returns void, a simple call like
>
>
>
> blah = myComObj.Foo()
>
>
>
> should do the trick.
>
>
>
> Grüße,
>
> Markus
>
>
>
> Von: users-bounces at lists.ironpython.com [mailto:
users-bounces at lists.ironpython.com] Im Auftrag von Tilley, Paul
> Gesendet: Mittwoch, 30. März 2011 01:10
> An: users at lists.ironpython.com
> Betreff: [IronPython] Newbie InterOp-related question
>
>
>
> Hi,
>
>
>
> I've just started using IronPython but have hit a bit of a roadblock. This
may also be caused by inadequate .Net knowledge.
>
>
>
> In C# I can call a COM object (where the COM method is going to fill in
the parameter) like so:
>
> object blah;
>
> myComObj.Foo(out blah);
>
>
>
> If for example the COM method returns an array of strings ( with the
parameter VARIANT* in COM method signature) then in C# I get an object[]
back which with appropriate massaging I can process.
>
>
>
> How would I declare the variable in Python if I want access the returned
contents correctly? Knowing I was to get an array back I naively tried:
>
> blah = []
>
> myComObj.Foo(blah)
>
>
>
> The call is made correctly - I can see the COM object is filling out the
return parameter OK but blah remains an empty list.
>
> Any insights on what I should be doing more than welcome,
>
>
>
> Thanks,
>
>
>
> Paul
>
>
>
>
>
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