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From: tmoran@acm.org
Newsgroups: comp.lang.ada
Subject: Re: LoadLibrary problem
References: <hZnMb.31463$qC.15980@bignews3.bellsouth.net>
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Xref: archiver1.google.com comp.lang.ada:4350
Date: 2004-01-12T06:18:02+00:00
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>What's more, instead of writing your own interface, you can use
>the imports provided in the win32-winbase.ads file, viz.:
>
>    pragma Import(Stdcall, LoadLibraryA, "LoadLibraryA");         --
>winbase.h:3619
> ...
>Also, note that the C calling convention is not the proper convention for
>use with Win32 libraries.

Or you could use Claw:
package CLAW.DLL is ...
    type DLL_Type is new Ada.Finalization.Controlled with private;
    procedure Load (DLL_Object: in out DLL_Type;
                    DLL_File:   in String);
    ...
and let it worry about things like Ada->C strings, proper finalization of
the handle, and StdCall vs C.