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Newsgroups: comp.lang.ada
Date: Fri, 14 Aug 2015 22:22:00 -0700 (PDT)
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Subject: Re: pragma/aspect Import, Convention parameters
From: gautier_niouzes@hotmail.com
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Xref: news.eternal-september.org comp.lang.ada:27455
Date: 2015-08-14T22:22:00-07:00
List-Id: <comp.lang.ada>

Le vendredi 14 ao=FBt 2015 01:42:30 UTC+2, David Botton a =E9crit=A0:
> In GWindows I used expressions based on the Win32 API that one chose to s=
upport. Windows has a duplicate Ansi and UNICODE set of APIs. It worked out=
 well.

It work*s*, and to the full satisfaction of its users :-) !
To be more concrete, GWindows spec. has this (the file gwindows.ads depends=
 on whether ANSI or UNICODE is used):

   Character_Mode_Identifier : constant String :=3D "W";

and there are at hundreds of places in children packages:

   procedure GetTextMetrics
     (HDC : in  GWindows.Types.Handle;
      M   : out Font_Metrics_W);
   pragma Import (StdCall, GetTextMetrics,
                    "GetTextMetrics" & Character_Mode_Identifier);

So, having the convention as a string could be helpful if one needs to swit=
ch between C and StdCall as well.
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