| 1 | /* |
| 2 | SDL - Simple DirectMedia Layer |
| 3 | Copyright (C) 1997-2009 Sam Lantinga |
| 4 | |
| 5 | This library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 of the License, or (at your option) any later version. |
| 9 | |
| 10 | This library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with this library; if not, write to the Free Software |
| 17 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | |
| 19 | Sam Lantinga |
| 20 | slouken@libsdl.org |
| 21 | */ |
| 22 | #include "SDL_config.h" |
| 23 | |
| 24 | #ifdef SDL_LOADSO_WIN32 |
| 25 | |
| 26 | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
| 27 | /* System dependent library loading routines */ |
| 28 | |
| 29 | #define WIN32_LEAN_AND_MEAN |
| 30 | #include <windows.h> |
| 31 | |
| 32 | #include "SDL_loadso.h" |
| 33 | |
| 34 | void *SDL_LoadObject(const char *sofile) |
| 35 | { |
| 36 | void *handle = NULL; |
| 37 | const char *loaderror = "Unknown error"; |
| 38 | |
| 39 | #if defined(_WIN32_WCE) |
| 40 | char errbuf[512]; |
| 41 | |
| 42 | wchar_t *errbuf_t = SDL_malloc(512 * sizeof(wchar_t)); |
| 43 | wchar_t *sofile_t = SDL_malloc((MAX_PATH+1) * sizeof(wchar_t)); |
| 44 | |
| 45 | MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, sofile, -1, sofile_t, MAX_PATH); |
| 46 | handle = (void *)LoadLibrary(sofile_t); |
| 47 | |
| 48 | /* Generate an error message if all loads failed */ |
| 49 | if ( handle == NULL ) { |
| 50 | FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS | |
| 51 | FORMAT_MESSAGE_FROM_SYSTEM), |
| 52 | NULL, GetLastError(), |
| 53 | MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), |
| 54 | errbuf_t, SDL_arraysize(errbuf), NULL); |
| 55 | WideCharToMultiByte(CP_ACP, 0, errbuf_t, -1, errbuf, 511, NULL, NULL); |
| 56 | loaderror = errbuf; |
| 57 | } |
| 58 | |
| 59 | SDL_free(sofile_t); |
| 60 | SDL_free(errbuf_t); |
| 61 | |
| 62 | #else /*if defined(__WIN32__)*/ |
| 63 | char errbuf[512]; |
| 64 | |
| 65 | handle = (void *)LoadLibrary(sofile); |
| 66 | |
| 67 | /* Generate an error message if all loads failed */ |
| 68 | if ( handle == NULL ) { |
| 69 | FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS | |
| 70 | FORMAT_MESSAGE_FROM_SYSTEM), |
| 71 | NULL, GetLastError(), |
| 72 | MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), |
| 73 | errbuf, SDL_arraysize(errbuf), NULL); |
| 74 | loaderror = errbuf; |
| 75 | } |
| 76 | #endif |
| 77 | |
| 78 | if ( handle == NULL ) { |
| 79 | SDL_SetError("Failed loading %s: %s", sofile, loaderror); |
| 80 | } |
| 81 | return(handle); |
| 82 | } |
| 83 | |
| 84 | void *SDL_LoadFunction(void *handle, const char *name) |
| 85 | { |
| 86 | void *symbol = NULL; |
| 87 | const char *loaderror = "Unknown error"; |
| 88 | |
| 89 | #if defined(_WIN32_WCE) |
| 90 | char errbuf[512]; |
| 91 | int length = SDL_strlen(name); |
| 92 | |
| 93 | wchar_t *name_t = SDL_malloc((length + 1) * sizeof(wchar_t)); |
| 94 | wchar_t *errbuf_t = SDL_malloc(512 * sizeof(wchar_t)); |
| 95 | |
| 96 | MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, name, -1, name_t, length+1); |
| 97 | |
| 98 | symbol = (void *)GetProcAddress((HMODULE)handle, name_t); |
| 99 | if ( symbol == NULL ) { |
| 100 | FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS | |
| 101 | FORMAT_MESSAGE_FROM_SYSTEM), |
| 102 | NULL, GetLastError(), |
| 103 | MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), |
| 104 | errbuf_t, SDL_arraysize(errbuf), NULL); |
| 105 | WideCharToMultiByte(CP_ACP, 0, errbuf_t, -1, errbuf, 511, NULL, NULL); |
| 106 | loaderror = errbuf; |
| 107 | } |
| 108 | |
| 109 | SDL_free(name_t); |
| 110 | SDL_free(errbuf_t); |
| 111 | |
| 112 | #else /*if defined(WIN32)*/ |
| 113 | char errbuf[512]; |
| 114 | |
| 115 | symbol = (void *)GetProcAddress((HMODULE)handle, name); |
| 116 | if ( symbol == NULL ) { |
| 117 | FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS | |
| 118 | FORMAT_MESSAGE_FROM_SYSTEM), |
| 119 | NULL, GetLastError(), |
| 120 | MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), |
| 121 | errbuf, SDL_arraysize(errbuf), NULL); |
| 122 | loaderror = errbuf; |
| 123 | } |
| 124 | #endif |
| 125 | |
| 126 | if ( symbol == NULL ) { |
| 127 | SDL_SetError("Failed loading %s: %s", name, loaderror); |
| 128 | } |
| 129 | return(symbol); |
| 130 | } |
| 131 | |
| 132 | void SDL_UnloadObject(void *handle) |
| 133 | { |
| 134 | if ( handle != NULL ) { |
| 135 | FreeLibrary((HMODULE)handle); |
| 136 | } |
| 137 | } |
| 138 | |
| 139 | #endif /* SDL_LOADSO_WIN32 */ |