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From: Dmitry A. Kazakov <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: Minimal pragma Export (StdCall... example?
Date: Thu, 11 Mar 2004 15:03:15 +0100
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On 11 Mar 2004 05:31:24 -0800, happysegfault@yahoo.com (Happy
Segfault) wrote:

>I'm trying to write a DLL using GNAT 3.15p on Windows XP.  The DLL needs to 
>export functions with the StdCall calling convention so that they can be 
>called from Visual Basic.  Using samples/dll/ from the gwindows distribution 
>as a starting point, I haven't been successful in getting this to work.  
>
>If I just change the occurrences of pragma Export (C... to pragma Export 
>(StdCall..., the Ada test driver program call_gw_dll.adb fails to link because 
>the link library libgw_in_a_dll.a exports "_pop_a_window" only, while the 
>linker wants "pop_a_window@0".  Neither of these is the "_pop_a_window@0" I 
>would have expected to see for a StdCall function.  
>
>Does anybody have a minimal set of code for a DLL, test program, and makefile 
>that demonstrates building a StdCall DLL using GNAT on Windows?  

Why do you use C convention? It should be rather

pragma Export (StdCall, Local_Name [, "External_Name"]);

--
Regards,
Dmitry Kazakov
www.dmitry-kazakov.de