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SDL_sysloadso.c
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SDL_sysloadso.c
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/*
SDL - Simple DirectMedia Layer
Copyright (C) 1997-2010 Sam Lantinga
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Sam Lantinga
slouken@libsdl.org
*/
#include "SDL_config.h"
#ifdef SDL_LOADSO_WINDOWS
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/* System dependent library loading routines */
#define WIN32_LEAN_AND_MEAN
#include <windows.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 = SDL_malloc(512 * sizeof(wchar_t));
wchar_t *sofile_t = SDL_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_arraysize(errbuf), NULL);
WideCharToMultiByte(CP_ACP, 0, errbuf_t, -1, errbuf, 511, NULL, NULL);
loaderror = errbuf;
}
SDL_free(sofile_t);
SDL_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_arraysize(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 = SDL_strlen(name);
wchar_t *name_t = SDL_malloc((length + 1) * sizeof(wchar_t));
wchar_t *errbuf_t = SDL_malloc(512 * sizeof(wchar_t));
MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, name, -1, name_t, length + 1);
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_arraysize(errbuf), NULL);
WideCharToMultiByte(CP_ACP, 0, errbuf_t, -1, errbuf, 511, NULL, NULL);
loaderror = errbuf;
}
SDL_free(name_t);
SDL_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_arraysize(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);
}
}
#endif /* SDL_LOADSO_WINDOWS */
/* vi: set ts=4 sw=4 expandtab: */