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Article View: comp.os.ms-windows.programmer.misc
Article #2505

Re: DLL problem (using BC++/AF)

#2505
From: Mehran Farimani
Date: Wed, 06 Jan 1993 10:17
33 lines
1504 bytes
In article <1993Jan5.212008.6162@msdhsv.ingr.com> ahmad@norooz.b17a.ingr.com writes:
>
>    BOOL FAR PASCAL MyFunction (char far *theString) /* this functions is */
>    {                                            /* exported in .DEF */
>         return 1;
>    }
>
>
>And the main executable source:
>
>    #include <owl.h>
>    int PASCAL WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
>                       LPSTR lpCmdLine, int nCmdShow)
>    {
>        HINSTANCE DLLInstance;
>        BOOL FAR (*MyFunctionFunc)(char far  *theString);

If this is not a typo in your posting, then the problem is that you should
declare lpfnMyFunction as BOOL FAR PASCAL (*lpfnMyFunction) (...) (you're
missing the pascal part). To avoid these mistakes, you can use the CALLBACK
typedef for declaring your functions. So, in your DLL you'd have

BOOL CALLBACK MyFunction (...)

and in your program you'd have

BOOL (CALLBACK *lpfnMyFunction) (...);

Hope this helps ...

Regards,

--Mehran
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From: mehran@monet.uwaterloo.ca (Mehran Farimani)
Subject: Re: DLL problem (using BC++/AF)
Message-ID: <C0FGKG.2n6@watserv1.uwaterloo.ca>
Sender: news@watserv1.uwaterloo.ca
Organization: University of Waterloo
References: <1993Jan5.212008.6162@msdhsv.ingr.com>
Date: Wed, 6 Jan 1993 10:17:03 GMT
Lines: 34