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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: Declaring GLADE callbacks with G_MODULE_EXPORT.
Date: Thu, 31 Mar 2016 11:34:25 +0200
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Date: 2016-03-31T11:34:25+02:00
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On 31/03/2016 11:21, George J wrote:
> On Thursday, 31 March 2016 12:11:12 UTC+3, George J  wrote:
>> Hi all! I've got a problem with connecting signals with
>> Builder.Connect_Signals. It's said in description that "...When
>> compiling applications for Windows, you must declare callbacks with
>> G_MODULE_EXPORT...". So my question is "how to do this?" and what does
>> it mean?
 >
> For example how I can link this way procedure like
> ---------------------------------------------------------
> procedure Test(Self:Gtk_Some_Object) is
> begin
>     null;
> end Test;
> ---------------------------------------------------------
> I couldn't find any example for Ada with this declaration, and really
> can't understand, how I can do it. Thanks.

I don't use GLADE, of course, so it is just guessing. Under Windows 
G_MODULE_EXPORT is likely DLL export used to bind to the procedure after 
loading the DLL. In Ada terms it must be

    pragma Export (C, Test, "Test");

or, if GLADE uses Windows API conventions:

    pragma Export (Stdcal, Test, "Test");

The external name "Test" is up to experiments. It could be "_test" or 
some Windows mangled name "Test@...". I have no idea what external names 
GLADE uses. An error message upon loading/linking should hint at it.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de