[ctypes-users] problem on call a dll

[Michele P. <mic...@un...>]

Hi list,
I'm trying to call the freetype (freetype.org) dll with ctypes, but I
have some problems on my win platform.
I create a little wrapper for the freeimage library that work well on
linux, but on win I receive:

   File "V:\dev\FreeTypePy_h.py", line 599, in __init__
     print self.lib.FT_Init_FreeType (C.addressof(library))
ValueError: Procedure probably called with too many arguments (4 bytes
in excess)

Like I said, the same code work on linux!
The dll that I'm using is that found on gnuwin32.sf.net on the freetype
section.

The developer, that I wrote to, said that this problem derive from the
compiler and the calling conversion.

So, for try, I made a simple "C -> C++" dll wrapper like this:

-------dllmain.c

#include <ft2build.h>
#include FT_FREETYPE_H

#define DLL_API extern "C" __declspec(dllexport)
#define DLL_CALLCONV __stdcall

DLL_API
FT_Error DLL_CALLCONV initLib(FT_Library *library) {
   return FT_Init_FreeType( library );
}

DLL_API
FT_Error DLL_CALLCONV doneLib(FT_Library library) {
   return FT_Done_FreeType( library );
}

And compiled with g++.exe to project.dll

And now if I call the "project.dll", I can call the freetype.dll!

What can I do for try to make all work?

Thanks,
Michele