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From: =?utf-8?Q?Yannick_Duch=C3=AAne_=28Hibou57?=
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Newsgroups: comp.lang.ada
Subject: Re: Telephony Application Programming Interface
Date: Wed, 07 Nov 2012 10:38:12 +0100
Organization: Ada @ Home
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Date: 2012-11-07T10:38:12+01:00
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Le Wed, 07 Nov 2012 09:10:24 +0100, MAriusz <irmar@duno.pl> a =C3=A9crit=
:

> http://msdn.microsoft.com/en-us/library/windows/desktop/ms728171(v=3Dv=
s.85).aspx
>
> How to do it in ADA ?

Create a function definition for `CoInitializeEx` and `CoCreateInstance`=
,  =

then instead of creating a body, imports with C++ convention. Map  =

constants `NULL`, `COINIT_MULTITHREADED` to Ada typed constants, with  =

appropriate representations and conventions. Similarly, create a mapping=
  =

of `ITTAPI` as an Ada record. I don't know how well typical Ada compiler=
s  =

handles C++ dispatching, so I wonder what to do for `gpTapi->Initialize(=
)`.

Alternatively and simpler, you may compile the whole snippet to an objec=
t  =

file, and bind to this object file with its own simplified interface  =

instead of to the Windows API directly. That's a good option (something =
 =

like pre-re-interfacing) when one don't want to bind to a full API but  =

only to a particular usage of it.

You may look at [Annex B =E2=80=94 Interface to Other  =

Languages](http://www.adaic.org/resources/add_content/standards/05rm/htm=
l/RM-B.html)  =

for more on the topic.


-- =

=E2=80=9CSyntactic sugar causes cancer of the semi-colons.=E2=80=9D [1]
=E2=80=9CStructured Programming supports the law of the excluded muddle.=
=E2=80=9D [1]
[1]: Epigrams on Programming =E2=80=94 Alan J. =E2=80=94 P. Yale Univers=
ity