/*

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 */

#if !SDL_INTERNAL_BUILDING_LOADSO

#error Do not compile directly...compile src/SDL_loadso.c instead!

#endif

#if !defined(WIN32) && !defined(_WIN32_WCE)

#error Compiling for the wrong platform?

#endif

#include <stdio.h>

#include <windows.h>

#include "SDL_types.h"

#include "SDL_error.h"

#include "SDL_loadso.h"

void *SDL_LoadObject(const char *sofile)

{

void *handle = NULL;

const char *loaderror = "Unknown error";

#if defined(_WIN32_WCE)

char errbuf[512];

wchar_t *errbuf_t = malloc(512 * sizeof(wchar_t));

wchar_t *sofile_t = malloc((MAX_PATH+1) * sizeof(wchar_t));

MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, sofile, -1, sofile_t, MAX_PATH);

handle = (void *)LoadLibrary(sofile_t);

/* Generate an error message if all loads failed */

if ( handle == NULL ) {

FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS |

FORMAT_MESSAGE_FROM_SYSTEM),

NULL, GetLastError(),

MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),

errbuf_t, SDL_TABLESIZE(errbuf), NULL);

WideCharToMultiByte(CP_ACP, 0, errbuf_t, -1, errbuf, 511, NULL, NULL);

loaderror = errbuf;

}

free(sofile_t);

free(errbuf_t);

#else /*if defined(WIN32)*/

char errbuf[512];

handle = (void *)LoadLibrary(sofile);

/* Generate an error message if all loads failed */

if ( handle == NULL ) {

FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS |

FORMAT_MESSAGE_FROM_SYSTEM),

NULL, GetLastError(),

MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),

errbuf, SDL_TABLESIZE(errbuf), NULL);

loaderror = errbuf;

}

#endif

if ( handle == NULL ) {

SDL_SetError("Failed loading %s: %s", sofile, loaderror);

}

return(handle);

}

void *SDL_LoadFunction(void *handle, const char *name)

{

void *symbol = NULL;

const char *loaderror = "Unknown error";

#if defined(_WIN32_WCE)

char errbuf[512];

int length = strlen(name);

wchar_t *name_t = malloc((length + 1) * sizeof(wchar_t));

wchar_t *errbuf_t = malloc(512 * sizeof(wchar_t));

MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, name, -1, name_t, length);

symbol = (void *)GetProcAddress((HMODULE)handle, name_t);

if ( symbol == NULL ) {

FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS |

FORMAT_MESSAGE_FROM_SYSTEM),

NULL, GetLastError(),

MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),

errbuf_t, SDL_TABLESIZE(errbuf), NULL);

WideCharToMultiByte(CP_ACP, 0, errbuf_t, -1, errbuf, 511, NULL, NULL);

loaderror = errbuf;

}

free(name_t);

free(errbuf_t);

#else /*if defined(WIN32)*/

char errbuf[512];

symbol = (void *)GetProcAddress((HMODULE)handle, name);

if ( symbol == NULL ) {

FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS |

FORMAT_MESSAGE_FROM_SYSTEM),

NULL, GetLastError(),

MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),

errbuf, SDL_TABLESIZE(errbuf), NULL);

loaderror = errbuf;

}

#endif

if ( symbol == NULL ) {

SDL_SetError("Failed loading %s: %s", name, loaderror);

}

return(symbol);

}

void SDL_UnloadObject(void *handle)

{

if ( handle != NULL ) {

FreeLibrary((HMODULE)handle);

}

}