Mercurial > sdl-ios-xcode
annotate src/main/win32/SDL_main.c @ 202:401f0134f4f9
Fixed crash when using double-buffering with DGA
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 30 Sep 2001 20:19:20 +0000 |
| parents | 0e66fd980014 |
| children | a6fa62b1be09 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL_main.c, placed in the public domain by Sam Lantinga 4/13/98 | |
| 3 | |
| 4 The WinMain function -- calls your program's main() function | |
| 5 */ | |
| 6 | |
| 7 #include <stdio.h> | |
| 8 #include <string.h> | |
| 9 #include <ctype.h> | |
| 10 #include <stdlib.h> | |
| 11 | |
| 12 #include <windows.h> | |
| 13 #include <malloc.h> /* For _alloca() */ | |
| 14 | |
| 15 /* Include the SDL main definition header */ | |
| 16 #include "SDL.h" | |
| 17 #include "SDL_main.h" | |
| 18 #ifdef main | |
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19 #ifndef _WIN32_WCE_EMULATION |
| 0 | 20 #undef main |
| 21 #endif | |
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22 #endif |
| 0 | 23 |
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24 /* Do we really not want stdio redirection with Windows CE? */ |
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25 #ifdef _WIN32_WCE |
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26 #define NO_STDIO_REDIRECT |
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27 #endif |
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28 |
| 0 | 29 /* The standard output files */ |
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30 #define STDOUT_FILE TEXT("stdout.txt") |
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31 #define STDERR_FILE TEXT("stderr.txt") |
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32 |
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33 #if defined(_WIN32_WCE) && _WIN32_WCE < 300 |
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34 /* seems to be undefined in Win CE although in online help */ |
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35 #define isspace(a) (((CHAR)a == ' ') || ((CHAR)a == '\t')) |
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36 |
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37 /* seems to be undefined in Win CE although in online help */ |
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38 char *strrchr(char *str, int c) |
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39 { |
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40 char *p; |
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41 |
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42 /* Skip to the end of the string */ |
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43 p=str; |
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44 while (*p) |
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45 p++; |
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46 |
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47 /* Look for the given character */ |
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48 while ( (p >= str) && (*p != (CHAR)c) ) |
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49 p--; |
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50 |
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51 /* Return NULL if character not found */ |
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52 if ( p < str ) { |
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53 p = NULL; |
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54 } |
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55 return p; |
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56 } |
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57 #endif /* _WIN32_WCE < 300 */ |
| 0 | 58 |
| 59 /* Parse a command line buffer into arguments */ | |
| 60 static int ParseCommandLine(char *cmdline, char **argv) | |
| 61 { | |
| 62 char *bufp; | |
| 63 int argc; | |
| 64 | |
| 65 argc = 0; | |
| 66 for ( bufp = cmdline; *bufp; ) { | |
| 67 /* Skip leading whitespace */ | |
| 68 while ( isspace(*bufp) ) { | |
| 69 ++bufp; | |
| 70 } | |
| 71 /* Skip over argument */ | |
| 72 if ( *bufp == '"' ) { | |
| 73 ++bufp; | |
| 74 if ( *bufp ) { | |
| 75 if ( argv ) { | |
| 76 argv[argc] = bufp; | |
| 77 } | |
| 78 ++argc; | |
| 79 } | |
| 80 /* Skip over word */ | |
| 81 while ( *bufp && (*bufp != '"') ) { | |
| 82 ++bufp; | |
| 83 } | |
| 84 } else { | |
| 85 if ( *bufp ) { | |
| 86 if ( argv ) { | |
| 87 argv[argc] = bufp; | |
| 88 } | |
| 89 ++argc; | |
| 90 } | |
| 91 /* Skip over word */ | |
| 92 while ( *bufp && ! isspace(*bufp) ) { | |
| 93 ++bufp; | |
| 94 } | |
| 95 } | |
| 96 if ( *bufp ) { | |
| 97 if ( argv ) { | |
| 98 *bufp = '\0'; | |
| 99 } | |
| 100 ++bufp; | |
| 101 } | |
| 102 } | |
| 103 if ( argv ) { | |
| 104 argv[argc] = NULL; | |
| 105 } | |
| 106 return(argc); | |
| 107 } | |
| 108 | |
| 109 /* Show an error message */ | |
| 110 static void ShowError(const char *title, const char *message) | |
| 111 { | |
| 112 /* If USE_MESSAGEBOX is defined, you need to link with user32.lib */ | |
| 113 #ifdef USE_MESSAGEBOX | |
| 114 MessageBox(NULL, message, title, MB_ICONEXCLAMATION|MB_OK); | |
| 115 #else | |
| 116 fprintf(stderr, "%s: %s\n", title, message); | |
| 117 #endif | |
| 118 } | |
| 119 | |
| 120 /* Pop up an out of memory message, returns to Windows */ | |
| 121 static BOOL OutOfMemory(void) | |
| 122 { | |
| 123 ShowError("Fatal Error", "Out of memory - aborting"); | |
| 124 return FALSE; | |
| 125 } | |
| 126 | |
| 127 /* Remove the output files if there was no output written */ | |
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128 static void __cdecl cleanup_output(void) |
| 0 | 129 { |
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130 #ifndef NO_STDIO_REDIRECT |
| 0 | 131 FILE *file; |
| 132 int empty; | |
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133 #endif |
| 0 | 134 |
| 135 /* Flush the output in case anything is queued */ | |
| 136 fclose(stdout); | |
| 137 fclose(stderr); | |
| 138 | |
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139 #ifndef NO_STDIO_REDIRECT |
| 0 | 140 /* See if the files have any output in them */ |
| 141 file = fopen(STDOUT_FILE, "rb"); | |
| 142 if ( file ) { | |
| 143 empty = (fgetc(file) == EOF) ? 1 : 0; | |
| 144 fclose(file); | |
| 145 if ( empty ) { | |
| 146 remove(STDOUT_FILE); | |
| 147 } | |
| 148 } | |
| 149 file = fopen(STDERR_FILE, "rb"); | |
| 150 if ( file ) { | |
| 151 empty = (fgetc(file) == EOF) ? 1 : 0; | |
| 152 fclose(file); | |
| 153 if ( empty ) { | |
| 154 remove(STDERR_FILE); | |
| 155 } | |
| 156 } | |
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157 #endif |
| 0 | 158 } |
| 159 | |
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160 #if defined(_MSC_VER) && !defined(_WIN32_WCE) |
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161 /* The VC++ compiler needs main defined */ |
| 0 | 162 #define console_main main |
| 163 #endif | |
| 164 | |
| 165 /* This is where execution begins [console apps] */ | |
| 166 int console_main(int argc, char *argv[]) | |
| 167 { | |
| 168 int n; | |
| 169 char *bufp, *appname; | |
| 170 | |
| 171 /* Get the class name from argv[0] */ | |
| 172 appname = argv[0]; | |
| 173 if ( (bufp=strrchr(argv[0], '\\')) != NULL ) { | |
| 174 appname = bufp+1; | |
| 175 } else | |
| 176 if ( (bufp=strrchr(argv[0], '/')) != NULL ) { | |
| 177 appname = bufp+1; | |
| 178 } | |
| 179 | |
| 180 if ( (bufp=strrchr(appname, '.')) == NULL ) | |
| 181 n = strlen(appname); | |
| 182 else | |
| 183 n = (bufp-appname); | |
| 184 | |
| 185 bufp = (char *)alloca(n+1); | |
| 186 if ( bufp == NULL ) { | |
| 187 return OutOfMemory(); | |
| 188 } | |
| 189 strncpy(bufp, appname, n); | |
| 190 bufp[n] = '\0'; | |
| 191 appname = bufp; | |
| 192 | |
| 193 /* Load SDL dynamic link library */ | |
| 194 if ( SDL_Init(SDL_INIT_NOPARACHUTE) < 0 ) { | |
| 195 ShowError("WinMain() error", SDL_GetError()); | |
| 196 return(FALSE); | |
| 197 } | |
| 198 atexit(cleanup_output); | |
| 199 atexit(SDL_Quit); | |
| 200 | |
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201 #ifndef DISABLE_VIDEO |
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202 #if 0 |
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203 /* Create and register our class * |
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204 DJM: If we do this here, the user nevers gets a chance to |
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205 putenv(SDL_WINDOWID). This is already called later by |
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206 the (DIB|DX5)_CreateWindow function, so it should be |
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207 safe to comment it out here. |
| 0 | 208 if ( SDL_RegisterApp(appname, CS_BYTEALIGNCLIENT, |
| 209 GetModuleHandle(NULL)) < 0 ) { | |
| 210 ShowError("WinMain() error", SDL_GetError()); | |
| 211 exit(1); | |
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212 }*/ |
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213 #else |
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214 /* Sam: |
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215 We still need to pass in the application handle so that |
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216 DirectInput will initialize properly when SDL_RegisterApp() |
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217 is called later in the video initialization. |
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218 */ |
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219 SDL_SetModuleHandle(GetModuleHandle(NULL)); |
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220 #endif /* 0 */ |
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221 #endif /* !DISABLE_VIDEO */ |
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222 |
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223 /* Run the application main() code */ |
| 0 | 224 SDL_main(argc, argv); |
| 225 | |
| 226 /* Exit cleanly, calling atexit() functions */ | |
| 227 exit(0); | |
| 228 } | |
| 229 | |
| 230 /* This is where execution begins [windowed apps] */ | |
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231 #ifdef _WIN32_WCE |
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232 int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrev, LPWSTR szCmdLine, int sw) |
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233 #else |
| 0 | 234 int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrev, LPSTR szCmdLine, int sw) |
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235 #endif |
| 0 | 236 { |
| 237 HINSTANCE handle; | |
| 238 char **argv; | |
| 239 int argc; | |
| 240 char *cmdline; | |
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241 #ifdef _WIN32_WCE |
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242 wchar_t *bufp; |
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243 int nLen; |
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244 #else |
| 0 | 245 char *bufp; |
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246 #endif |
| 0 | 247 #ifndef NO_STDIO_REDIRECT |
| 248 FILE *newfp; | |
| 249 #endif | |
| 250 | |
| 251 /* Start up DDHELP.EXE before opening any files, so DDHELP doesn't | |
| 252 keep them open. This is a hack.. hopefully it will be fixed | |
| 253 someday. DDHELP.EXE starts up the first time DDRAW.DLL is loaded. | |
| 254 */ | |
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255 handle = LoadLibrary(TEXT("DDRAW.DLL")); |
| 0 | 256 if ( handle != NULL ) { |
| 257 FreeLibrary(handle); | |
| 258 } | |
| 259 | |
| 260 #ifndef NO_STDIO_REDIRECT | |
| 261 /* Redirect standard input and standard output */ | |
| 262 newfp = freopen(STDOUT_FILE, "w", stdout); | |
| 263 if ( newfp == NULL ) { /* This happens on NT */ | |
| 264 #if !defined(stdout) | |
| 265 stdout = fopen(STDOUT_FILE, "w"); | |
| 266 #else | |
| 267 newfp = fopen(STDOUT_FILE, "w"); | |
| 268 if ( newfp ) { | |
| 269 *stdout = *newfp; | |
| 270 } | |
| 271 #endif | |
| 272 } | |
| 273 newfp = freopen(STDERR_FILE, "w", stderr); | |
| 274 if ( newfp == NULL ) { /* This happens on NT */ | |
| 275 #if !defined(stderr) | |
| 276 stderr = fopen(STDERR_FILE, "w"); | |
| 277 #else | |
| 278 newfp = fopen(STDERR_FILE, "w"); | |
| 279 if ( newfp ) { | |
| 280 *stderr = *newfp; | |
| 281 } | |
| 282 #endif | |
| 283 } | |
| 284 setvbuf(stdout, NULL, _IOLBF, BUFSIZ); /* Line buffered */ | |
| 285 setbuf(stderr, NULL); /* No buffering */ | |
| 286 #endif /* !NO_STDIO_REDIRECT */ | |
| 287 | |
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288 #ifdef _WIN32_WCE |
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289 nLen = wcslen(szCmdLine)+128+1; |
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290 bufp = (wchar_t *)alloca(nLen*2); |
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291 GetModuleFileName(NULL, bufp, 128); |
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292 wcsncpy(bufp+wcslen(bufp), szCmdLine,nLen-wcslen(bufp)); |
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293 nLen = wcslen(bufp)+1; |
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294 cmdline = (char *)alloca(nLen); |
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295 if ( cmdline == NULL ) { |
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296 return OutOfMemory(); |
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297 } |
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298 WideCharToMultiByte(CP_ACP, 0, bufp, -1, cmdline, nLen, NULL, NULL); |
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299 #else |
| 0 | 300 /* Grab the command line (use alloca() on Windows) */ |
| 301 bufp = GetCommandLine(); | |
| 302 cmdline = (char *)alloca(strlen(bufp)+1); | |
| 303 if ( cmdline == NULL ) { | |
| 304 return OutOfMemory(); | |
| 305 } | |
| 306 strcpy(cmdline, bufp); | |
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307 #endif |
| 0 | 308 |
| 309 /* Parse it into argv and argc */ | |
| 310 argc = ParseCommandLine(cmdline, NULL); | |
| 311 argv = (char **)alloca((argc+1)*(sizeof *argv)); | |
| 312 if ( argv == NULL ) { | |
| 313 return OutOfMemory(); | |
| 314 } | |
| 315 ParseCommandLine(cmdline, argv); | |
| 316 | |
| 317 /* Run the main program (after a little SDL initialization) */ | |
| 318 return(console_main(argc, argv)); | |
| 319 } |