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From: happysegfault@yahoo.com (Happy Segfault)
Newsgroups: comp.lang.ada
Subject: Re: Minimal pragma Export (StdCall... example?
Date: 12 Mar 2004 04:50:59 -0800
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Dmitry A. Kazakov <mailbox@dmitry-kazakov.de> wrote in message news:<d6s0501t3r52o1aikiedgcbh65q2rfhuvr@4ax.com>...
> 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"]);


That's what I'm trying to do, and I'm having the problems above.  

John