view include/SDL_loadso.h @ 937:1e6366bde299

Date: Tue, 27 Jul 2004 17:14:00 +0200 From: "Eckhard Stolberg" Subject: Controller names in SDL for Windows I'm working on an Atari 2600 emulator for different systems that uses the SDL. Some time ago someone created an adaptor that lets you use your old Atari controllers with your computer through the USB port. Some of the Atari controllers require special handling by the emulator, so it would be nice, if it would be possible to detect if any of the controllers connected to the computer is this adaptor. SDL would allow that with the SDL_JoystickName function, but unfortunately it doesn't work properly on Windows. On Linux and MacOSX this function returns the name of the controller, but on Windows you'll only get the name of the joystick driver. Most joysticks nowadays use the generic Microsoft driver, so they all return the same name. In an old MSDN article (http://msdn.microsoft.com/archive/default.asp?url=/archive/en-us/dnarinput/html/msdn_extdirect.asp) Microsoft describes how to read out the OEM controller names from the registry. I have implemented this for the SDL controller handler on Windows, and now reading the joystick name works properly there too.
author Sam Lantinga <slouken@libsdl.org>
date Sat, 21 Aug 2004 03:45:58 +0000
parents b8d311d90021
children c9b51268668f
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/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2004 Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the Free
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    Sam Lantinga
    slouken@libsdl.org
*/

#ifdef SAVE_RCSID
static char rcsid =
 "@(#) $Id$";
#endif

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/* System dependent library loading routines                           */

/* Some things to keep in mind:                                        
   - These functions only work on C function names.  Other languages may
     have name mangling and intrinsic language support that varies from
     compiler to compiler.
   - Make sure you declare your function pointers with the same calling
     convention as the actual library function.  Your code will crash
     mysteriously if you do not do this.
   - Avoid namespace collisions.  If you load a symbol from the library,
     it is not defined whether or not it goes into the global symbol
     namespace for the application.  If it does and it conflicts with
     symbols in your code or other shared libraries, you will not get
     the results you expect. :)
*/


#ifndef _SDL_loadso_h
#define _SDL_loadso_h

#include "begin_code.h"
/* Set up for C function definitions, even when using C++ */
#ifdef __cplusplus
extern "C" {
#endif

/* This function dynamically loads a shared object and returns a pointer
 * to the object handle (or NULL if there was an error).
 * The 'sofile' parameter is a system dependent name of the object file.
 */
extern DECLSPEC void * SDLCALL SDL_LoadObject(const char *sofile);

/* Given an object handle, this function looks up the address of the
 * named function in the shared object and returns it.  This address
 * is no longer valid after calling SDL_UnloadObject().
 */
extern DECLSPEC void * SDLCALL SDL_LoadFunction(void *handle, const char *name);

/* Unload a shared object from memory */
extern DECLSPEC void SDLCALL SDL_UnloadObject(void *handle);

/* Ends C function definitions when using C++ */
#ifdef __cplusplus
}
#endif
#include "close_code.h"

#endif /* _SDL_loadso_h */