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From: "Dave Korn" <dave DOT korn AT artimi DOT com>
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References: <18613133 DOT post AT talk DOT nabble DOT com>
Subject: RE: GetProcAddress Problem
Date: Wed, 23 Jul 2008 16:29:46 +0100
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Stefano Facchetti wrote on 23 July 2008 16:17:

> How specify in FAQ 6.16 I try to compile this code:
> 
> ...
>  HMODULE h = LoadLibrary("cygwin1.dll");
>  void (*init)() = GetProcAddress(h, "cygwin_dll_init");
>  init();
> ...
> 
> The compiler give my the following error:
> 
> festivalDll.cc: In function `void festival_init()':
> festivalDll.cc:18: error: invalid conversion from `int (*)()' to `void
> (*)()'
> 
> How can I do..?

  GetProcAddress returns all function pointers as if they were of type 'int
(*)()', because it has to return a pointer to some kind of function, but it
can't know what actual prototype the function has, so it uses the simplest.

  In your program, where you /know/ the actual type of the function, you
need to cast the result returned from GPA:

  void (*init)() = (void (*)()) GetProcAddress(h, "cygwin_dll_init");

    cheers,
      DaveK
-- 
Can't think of a witty .sigline today....


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