Mercurial > sdl-ios-xcode
annotate src/SDL.c @ 4280:e1826b24ee8d SDL-1.2
Updated documentation with major changes for 1.2.14
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Wed, 07 Oct 2009 08:00:20 +0000 |
| parents | a1b03ba2fcd0 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
| 4159 | 3 Copyright (C) 1997-2009 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
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6 modify it under the terms of the GNU Lesser General Public |
| 0 | 7 License as published by the Free Software Foundation; either |
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8 version 2.1 of the License, or (at your option) any later version. |
| 0 | 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 | |
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13 Lesser General Public License for more details. |
| 0 | 14 |
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15 You should have received a copy of the GNU Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
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20 slouken@libsdl.org |
| 0 | 21 */ |
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22 #include "SDL_config.h" |
| 0 | 23 |
| 24 /* Initialization code for SDL */ | |
| 25 | |
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26 #include "SDL.h" |
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27 #include "SDL_fatal.h" |
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28 #if !SDL_VIDEO_DISABLED |
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29 #include "video/SDL_leaks.h" |
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30 #endif |
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31 |
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32 #if SDL_THREAD_PTH |
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33 #include <pth.h> |
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34 #endif |
| 0 | 35 |
| 36 /* Initialization/Cleanup routines */ | |
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37 #if !SDL_JOYSTICK_DISABLED |
| 0 | 38 extern int SDL_JoystickInit(void); |
| 39 extern void SDL_JoystickQuit(void); | |
| 40 #endif | |
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41 #if !SDL_CDROM_DISABLED |
| 0 | 42 extern int SDL_CDROMInit(void); |
| 43 extern void SDL_CDROMQuit(void); | |
| 44 #endif | |
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45 #if !SDL_TIMERS_DISABLED |
| 0 | 46 extern void SDL_StartTicks(void); |
| 47 extern int SDL_TimerInit(void); | |
| 48 extern void SDL_TimerQuit(void); | |
| 49 #endif | |
| 50 | |
| 51 /* The current SDL version */ | |
| 52 static SDL_version version = | |
| 53 { SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_PATCHLEVEL }; | |
| 54 | |
| 55 /* The initialized subsystems */ | |
| 56 static Uint32 SDL_initialized = 0; | |
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57 #if !SDL_TIMERS_DISABLED |
| 0 | 58 static Uint32 ticks_started = 0; |
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59 #endif |
| 0 | 60 |
| 61 #ifdef CHECK_LEAKS | |
| 62 int surfaces_allocated = 0; | |
| 63 #endif | |
| 64 | |
| 65 int SDL_InitSubSystem(Uint32 flags) | |
| 66 { | |
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67 #if !SDL_VIDEO_DISABLED |
| 0 | 68 /* Initialize the video/event subsystem */ |
| 69 if ( (flags & SDL_INIT_VIDEO) && !(SDL_initialized & SDL_INIT_VIDEO) ) { | |
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70 if ( SDL_VideoInit(SDL_getenv("SDL_VIDEODRIVER"), |
| 0 | 71 (flags&SDL_INIT_EVENTTHREAD)) < 0 ) { |
| 72 return(-1); | |
| 73 } | |
| 74 SDL_initialized |= SDL_INIT_VIDEO; | |
| 75 } | |
| 76 #else | |
| 77 if ( flags & SDL_INIT_VIDEO ) { | |
| 78 SDL_SetError("SDL not built with video support"); | |
| 79 return(-1); | |
| 80 } | |
| 81 #endif | |
| 82 | |
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83 #if !SDL_AUDIO_DISABLED |
| 0 | 84 /* Initialize the audio subsystem */ |
| 85 if ( (flags & SDL_INIT_AUDIO) && !(SDL_initialized & SDL_INIT_AUDIO) ) { | |
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86 if ( SDL_AudioInit(SDL_getenv("SDL_AUDIODRIVER")) < 0 ) { |
| 0 | 87 return(-1); |
| 88 } | |
| 89 SDL_initialized |= SDL_INIT_AUDIO; | |
| 90 } | |
| 91 #else | |
| 92 if ( flags & SDL_INIT_AUDIO ) { | |
| 93 SDL_SetError("SDL not built with audio support"); | |
| 94 return(-1); | |
| 95 } | |
| 96 #endif | |
| 97 | |
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98 #if !SDL_TIMERS_DISABLED |
| 0 | 99 /* Initialize the timer subsystem */ |
| 100 if ( ! ticks_started ) { | |
| 101 SDL_StartTicks(); | |
| 102 ticks_started = 1; | |
| 103 } | |
| 104 if ( (flags & SDL_INIT_TIMER) && !(SDL_initialized & SDL_INIT_TIMER) ) { | |
| 105 if ( SDL_TimerInit() < 0 ) { | |
| 106 return(-1); | |
| 107 } | |
| 108 SDL_initialized |= SDL_INIT_TIMER; | |
| 109 } | |
| 110 #else | |
| 111 if ( flags & SDL_INIT_TIMER ) { | |
| 112 SDL_SetError("SDL not built with timer support"); | |
| 113 return(-1); | |
| 114 } | |
| 115 #endif | |
| 116 | |
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117 #if !SDL_JOYSTICK_DISABLED |
| 0 | 118 /* Initialize the joystick subsystem */ |
| 119 if ( (flags & SDL_INIT_JOYSTICK) && | |
| 120 !(SDL_initialized & SDL_INIT_JOYSTICK) ) { | |
| 121 if ( SDL_JoystickInit() < 0 ) { | |
| 122 return(-1); | |
| 123 } | |
| 124 SDL_initialized |= SDL_INIT_JOYSTICK; | |
| 125 } | |
| 126 #else | |
| 127 if ( flags & SDL_INIT_JOYSTICK ) { | |
| 128 SDL_SetError("SDL not built with joystick support"); | |
| 129 return(-1); | |
| 130 } | |
| 131 #endif | |
| 132 | |
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133 #if !SDL_CDROM_DISABLED |
| 0 | 134 /* Initialize the CD-ROM subsystem */ |
| 135 if ( (flags & SDL_INIT_CDROM) && !(SDL_initialized & SDL_INIT_CDROM) ) { | |
| 136 if ( SDL_CDROMInit() < 0 ) { | |
| 137 return(-1); | |
| 138 } | |
| 139 SDL_initialized |= SDL_INIT_CDROM; | |
| 140 } | |
| 141 #else | |
| 142 if ( flags & SDL_INIT_CDROM ) { | |
| 143 SDL_SetError("SDL not built with cdrom support"); | |
| 144 return(-1); | |
| 145 } | |
| 146 #endif | |
| 147 return(0); | |
| 148 } | |
| 149 | |
| 150 int SDL_Init(Uint32 flags) | |
| 151 { | |
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152 #if !SDL_THREADS_DISABLED && SDL_THREAD_PTH |
| 397 | 153 if (!pth_init()) { |
| 154 return -1; | |
| 155 } | |
| 156 #endif | |
| 157 | |
| 0 | 158 /* Clear the error message */ |
| 159 SDL_ClearError(); | |
| 160 | |
| 161 /* Initialize the desired subsystems */ | |
| 162 if ( SDL_InitSubSystem(flags) < 0 ) { | |
| 163 return(-1); | |
| 164 } | |
| 165 | |
| 166 /* Everything is initialized */ | |
| 167 if ( !(flags & SDL_INIT_NOPARACHUTE) ) { | |
| 168 SDL_InstallParachute(); | |
| 169 } | |
| 170 return(0); | |
| 171 } | |
| 172 | |
| 173 void SDL_QuitSubSystem(Uint32 flags) | |
| 174 { | |
| 175 /* Shut down requested initialized subsystems */ | |
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176 #if !SDL_CDROM_DISABLED |
| 0 | 177 if ( (flags & SDL_initialized & SDL_INIT_CDROM) ) { |
| 178 SDL_CDROMQuit(); | |
| 179 SDL_initialized &= ~SDL_INIT_CDROM; | |
| 180 } | |
| 181 #endif | |
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182 #if !SDL_JOYSTICK_DISABLED |
| 0 | 183 if ( (flags & SDL_initialized & SDL_INIT_JOYSTICK) ) { |
| 184 SDL_JoystickQuit(); | |
| 185 SDL_initialized &= ~SDL_INIT_JOYSTICK; | |
| 186 } | |
| 187 #endif | |
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188 #if !SDL_TIMERS_DISABLED |
| 0 | 189 if ( (flags & SDL_initialized & SDL_INIT_TIMER) ) { |
| 190 SDL_TimerQuit(); | |
| 191 SDL_initialized &= ~SDL_INIT_TIMER; | |
| 192 } | |
| 193 #endif | |
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194 #if !SDL_AUDIO_DISABLED |
| 0 | 195 if ( (flags & SDL_initialized & SDL_INIT_AUDIO) ) { |
| 196 SDL_AudioQuit(); | |
| 197 SDL_initialized &= ~SDL_INIT_AUDIO; | |
| 198 } | |
| 199 #endif | |
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200 #if !SDL_VIDEO_DISABLED |
| 0 | 201 if ( (flags & SDL_initialized & SDL_INIT_VIDEO) ) { |
| 202 SDL_VideoQuit(); | |
| 203 SDL_initialized &= ~SDL_INIT_VIDEO; | |
| 204 } | |
| 205 #endif | |
| 206 } | |
| 207 | |
| 208 Uint32 SDL_WasInit(Uint32 flags) | |
| 209 { | |
| 210 if ( ! flags ) { | |
| 211 flags = SDL_INIT_EVERYTHING; | |
| 212 } | |
| 213 return (SDL_initialized&flags); | |
| 214 } | |
| 215 | |
| 216 void SDL_Quit(void) | |
| 217 { | |
| 218 /* Quit all subsystems */ | |
| 1190 | 219 #ifdef DEBUG_BUILD |
| 220 printf("[SDL_Quit] : Enter! Calling QuitSubSystem()\n"); fflush(stdout); | |
| 221 #endif | |
| 0 | 222 SDL_QuitSubSystem(SDL_INIT_EVERYTHING); |
| 223 | |
| 224 #ifdef CHECK_LEAKS | |
| 1190 | 225 #ifdef DEBUG_BUILD |
| 226 printf("[SDL_Quit] : CHECK_LEAKS\n"); fflush(stdout); | |
| 227 #endif | |
| 228 | |
| 0 | 229 /* Print the number of surfaces not freed */ |
| 230 if ( surfaces_allocated != 0 ) { | |
| 231 fprintf(stderr, "SDL Warning: %d SDL surfaces extant\n", | |
| 232 surfaces_allocated); | |
| 233 } | |
| 234 #endif | |
| 1190 | 235 #ifdef DEBUG_BUILD |
| 236 printf("[SDL_Quit] : SDL_UninstallParachute()\n"); fflush(stdout); | |
| 237 #endif | |
| 0 | 238 |
| 239 /* Uninstall any parachute signal handlers */ | |
| 240 SDL_UninstallParachute(); | |
| 397 | 241 |
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242 #if !SDL_THREADS_DISABLED && SDL_THREAD_PTH |
| 397 | 243 pth_kill(); |
| 244 #endif | |
| 1190 | 245 #ifdef DEBUG_BUILD |
| 246 printf("[SDL_Quit] : Returning!\n"); fflush(stdout); | |
| 247 #endif | |
| 248 | |
| 0 | 249 } |
| 250 | |
| 251 /* Return the library version number */ | |
| 252 const SDL_version * SDL_Linked_Version(void) | |
| 253 { | |
| 254 return(&version); | |
| 255 } | |
| 256 | |
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257 #if defined(__OS2__) |
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258 /* Building for OS/2 */ |
| 1190 | 259 #ifdef __WATCOMC__ |
| 260 | |
| 261 #define INCL_DOSERRORS | |
| 262 #define INCL_DOSEXCEPTIONS | |
| 263 #include <os2.h> | |
| 264 | |
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265 /* Exception handler to prevent the Audio thread hanging, making a zombie process! */ |
| 1190 | 266 ULONG _System SDL_Main_ExceptionHandler(PEXCEPTIONREPORTRECORD pERepRec, |
| 267 PEXCEPTIONREGISTRATIONRECORD pERegRec, | |
| 268 PCONTEXTRECORD pCtxRec, | |
| 269 PVOID p) | |
| 270 { | |
| 271 if (pERepRec->fHandlerFlags & EH_EXIT_UNWIND) | |
| 272 return XCPT_CONTINUE_SEARCH; | |
| 273 if (pERepRec->fHandlerFlags & EH_UNWINDING) | |
| 274 return XCPT_CONTINUE_SEARCH; | |
| 275 if (pERepRec->fHandlerFlags & EH_NESTED_CALL) | |
| 276 return XCPT_CONTINUE_SEARCH; | |
| 277 | |
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278 /* Do cleanup at every fatal exception! */ |
| 1190 | 279 if (((pERepRec->ExceptionNum & XCPT_SEVERITY_CODE) == XCPT_FATAL_EXCEPTION) && |
| 280 (pERepRec->ExceptionNum != XCPT_BREAKPOINT) && | |
| 281 (pERepRec->ExceptionNum != XCPT_SINGLE_STEP) | |
| 282 ) | |
| 283 { | |
| 284 if (SDL_initialized & SDL_INIT_AUDIO) | |
| 285 { | |
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286 /* This removes the zombie audio thread in case of emergency. */ |
| 1190 | 287 #ifdef DEBUG_BUILD |
| 288 printf("[SDL_Main_ExceptionHandler] : Calling SDL_CloseAudio()!\n"); | |
| 289 #endif | |
| 290 SDL_CloseAudio(); | |
| 291 } | |
| 292 } | |
| 293 return (XCPT_CONTINUE_SEARCH); | |
| 294 } | |
| 295 | |
| 296 | |
| 297 EXCEPTIONREGISTRATIONRECORD SDL_Main_xcpthand = {0, SDL_Main_ExceptionHandler}; | |
| 298 | |
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299 /* The main DLL entry for DLL Initialization and Uninitialization: */ |
| 1190 | 300 unsigned _System LibMain(unsigned hmod, unsigned termination) |
| 301 { | |
| 302 if (termination) | |
| 303 { | |
| 304 #ifdef DEBUG_BUILD | |
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305 /* printf("[SDL DLL Unintialization] : Removing exception handler\n"); */ |
| 1190 | 306 #endif |
| 307 DosUnsetExceptionHandler(&SDL_Main_xcpthand); | |
| 308 return 1; | |
| 309 } else | |
| 310 { | |
| 311 #ifdef DEBUG_BUILD | |
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312 /* Make stdout and stderr unbuffered! */ |
| 1190 | 313 setbuf(stdout, NULL); |
| 314 setbuf(stderr, NULL); | |
| 315 #endif | |
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316 /* Fire up exception handler */ |
| 1190 | 317 #ifdef DEBUG_BUILD |
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318 /* printf("[SDL DLL Initialization] : Setting exception handler\n"); */ |
| 1190 | 319 #endif |
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320 /* Set exception handler */ |
| 1190 | 321 DosSetExceptionHandler(&SDL_Main_xcpthand); |
| 322 | |
| 323 return 1; | |
| 324 } | |
| 325 } | |
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326 #endif /* __WATCOMC__ */ |
| 1190 | 327 |
| 3975 | 328 #elif defined(__WIN32__) && !defined(__SYMBIAN32__) |
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329 |
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330 #if !defined(HAVE_LIBC) || (defined(__WATCOMC__) && defined(BUILD_DLL)) |
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331 /* Need to include DllMain() on Watcom C for some reason.. */ |
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332 #define WIN32_LEAN_AND_MEAN |
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333 #include <windows.h> |
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334 |
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335 BOOL APIENTRY _DllMainCRTStartup( HANDLE hModule, |
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336 DWORD ul_reason_for_call, |
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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337 LPVOID lpReserved ) |
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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338 { |
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
1312
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339 switch (ul_reason_for_call) { |
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
1312
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340 case DLL_PROCESS_ATTACH: |
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
1312
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341 case DLL_THREAD_ATTACH: |
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450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
1312
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342 case DLL_THREAD_DETACH: |
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
1312
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343 case DLL_PROCESS_DETACH: |
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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344 break; |
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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345 } |
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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346 return TRUE; |
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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347 } |
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1465
8dfa9a6d69a5
Updated WinCE support by Dmitry (with some tweaks)
Sam Lantinga <slouken@libsdl.org>
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1433
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348 #endif /* building DLL with Watcom C */ |
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Sam Lantinga <slouken@libsdl.org>
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349 |
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1402
d910939febfa
Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents:
1361
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350 #endif /* OS/2 elif __WIN32__ */ |