Mercurial > sdl-ios-xcode
annotate docs/html/index.html @ 688:c0522010bb6d
Date: Tue, 12 Aug 2003 14:26:19 +0200 (MEST)
From: "Mattias Engdeg?rd"
Subject: bug in SDL_GetRGB/GetRGBA
There's an embarrassing bug in GetRGB/GetRGBA which apparently has been there
for years. It incorrectly converts colours with < 8 bits/channel.
It came to my attention today in #sdl.
What it does now is (for each channel):
rv = (pixel & fmt->Rmask) >> fmt->Rshift;
*r = (rv << fmt->Rloss) + (rv >> (8 - fmt->Rloss));
which is wrong; the last line should be
*r = (rv << fmt->Rloss) + (rv >> (8 - (fmt->Rloss << 1)));
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 12 Aug 2003 15:17:20 +0000 |
| parents | e5bc29de3f0a |
| children | 355632dca928 |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 ></TITLE | |
| 5 ><META | |
| 6 NAME="GENERATOR" | |
|
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7 CONTENT="Modular DocBook HTML Stylesheet Version 1.64 |
| 0 | 8 "><LINK |
| 9 REL="NEXT" | |
| 10 TITLE="SDL Guide" | |
| 11 HREF="guide.html"></HEAD | |
| 12 ><BODY | |
| 13 CLASS="BOOK" | |
| 14 BGCOLOR="#FFF8DC" | |
| 15 TEXT="#000000" | |
| 16 LINK="#0000ee" | |
| 17 VLINK="#551a8b" | |
| 18 ALINK="#ff0000" | |
| 19 ><DIV | |
| 20 CLASS="BOOK" | |
| 21 ><A | |
| 22 NAME="AEN1" | |
| 23 ></A | |
| 24 ><DIV | |
| 25 CLASS="TOC" | |
| 26 ><DL | |
| 27 ><DT | |
| 28 ><B | |
| 29 >Table of Contents</B | |
| 30 ></DT | |
| 31 ><DT | |
| 32 >I. <A | |
| 33 HREF="guide.html" | |
| 34 >SDL Guide</A | |
| 35 ></DT | |
| 36 ><DD | |
| 37 ><DL | |
| 38 ><DT | |
| 39 ><A | |
| 40 HREF="guidepreface.html" | |
| 41 >Preface</A | |
| 42 ></DT | |
| 43 ><DD | |
| 44 ><DL | |
| 45 ><DT | |
| 46 ><A | |
| 47 HREF="guidepreface.html#GUIDEABOUTSDL" | |
| 48 >About SDL</A | |
| 49 ></DT | |
| 50 ><DT | |
| 51 ><A | |
| 52 HREF="guideaboutsdldoc.html" | |
| 53 >About SDLdoc</A | |
| 54 ></DT | |
| 55 ><DT | |
| 56 ><A | |
| 57 HREF="guidecredits.html" | |
| 58 >Credits</A | |
| 59 ></DT | |
| 60 ></DL | |
| 61 ></DD | |
| 62 ><DT | |
| 63 >1. <A | |
| 64 HREF="guidethebasics.html" | |
| 65 >The Basics</A | |
| 66 ></DT | |
| 67 ><DD | |
| 68 ><DL | |
| 69 ><DT | |
| 70 ><A | |
| 71 HREF="guidethebasics.html#GUIDEINTRODUCTION" | |
| 72 >Introduction</A | |
| 73 ></DT | |
| 74 ><DT | |
| 75 ><A | |
| 76 HREF="guidebasicsinit.html" | |
| 77 >Initializing SDL</A | |
| 78 ></DT | |
| 79 ></DL | |
| 80 ></DD | |
| 81 ><DT | |
| 82 >2. <A | |
| 83 HREF="guidevideo.html" | |
| 84 >Graphics and Video</A | |
| 85 ></DT | |
| 86 ><DD | |
| 87 ><DL | |
| 88 ><DT | |
| 89 ><A | |
|
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90 HREF="guidevideo.html#GUIDEVIDEOINTRO" |
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91 >Introduction to SDL Video</A |
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92 ></DT |
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93 ><DT |
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94 ><A |
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95 HREF="guidevideoopengl.html" |
| 0 | 96 >Using OpenGL With SDL</A |
| 97 ></DT | |
| 98 ></DL | |
| 99 ></DD | |
| 100 ><DT | |
| 101 >3. <A | |
| 102 HREF="guideinput.html" | |
| 103 >Input handling</A | |
| 104 ></DT | |
| 105 ><DD | |
| 106 ><DL | |
| 107 ><DT | |
| 108 ><A | |
| 109 HREF="guideinput.html#GUIDEINPUTJOYSTICK" | |
| 110 >Handling Joysticks</A | |
| 111 ></DT | |
| 112 ><DT | |
| 113 ><A | |
| 114 HREF="guideinputkeyboard.html" | |
| 115 >Handling the Keyboard</A | |
| 116 ></DT | |
| 117 ></DL | |
| 118 ></DD | |
| 119 ><DT | |
| 120 >4. <A | |
| 121 HREF="guideexamples.html" | |
| 122 >Examples</A | |
| 123 ></DT | |
| 124 ><DD | |
| 125 ><DL | |
| 126 ><DT | |
| 127 ><A | |
|
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128 HREF="guideexamples.html#AEN369" |
| 0 | 129 >Introduction</A |
| 130 ></DT | |
| 131 ><DT | |
| 132 ><A | |
| 133 HREF="guideeventexamples.html" | |
| 134 >Event Examples</A | |
| 135 ></DT | |
| 136 ><DT | |
| 137 ><A | |
| 138 HREF="guideaudioexamples.html" | |
| 139 >Audio Examples</A | |
| 140 ></DT | |
| 141 ><DT | |
| 142 ><A | |
| 143 HREF="guidecdromexamples.html" | |
| 144 >CDROM Examples</A | |
| 145 ></DT | |
| 146 ><DT | |
| 147 ><A | |
| 148 HREF="guidetimeexamples.html" | |
| 149 >Time Examples</A | |
| 150 ></DT | |
| 151 ></DL | |
| 152 ></DD | |
| 153 ></DL | |
| 154 ></DD | |
| 155 ><DT | |
| 156 >II. <A | |
| 157 HREF="reference.html" | |
| 158 >SDL Reference</A | |
| 159 ></DT | |
| 160 ><DD | |
| 161 ><DL | |
| 162 ><DT | |
| 163 >5. <A | |
| 164 HREF="general.html" | |
| 165 >General</A | |
| 166 ></DT | |
| 167 ><DD | |
| 168 ><DL | |
| 169 ><DT | |
| 170 ><A | |
| 171 HREF="sdlinit.html" | |
| 172 >SDL_Init</A | |
| 173 > — Initializes SDL</DT | |
| 174 ><DT | |
| 175 ><A | |
| 176 HREF="sdlinitsubsystem.html" | |
| 177 >SDL_InitSubSystem</A | |
| 178 > — Initialize subsystems</DT | |
| 179 ><DT | |
| 180 ><A | |
| 181 HREF="sdlquitsubsystem.html" | |
| 182 >SDL_QuitSubSystem</A | |
| 183 > — Shut down a subsystem</DT | |
| 184 ><DT | |
| 185 ><A | |
| 186 HREF="sdlquit.html" | |
| 187 >SDL_Quit</A | |
| 188 > — Shut down SDL</DT | |
| 189 ><DT | |
| 190 ><A | |
| 191 HREF="sdlwasinit.html" | |
| 192 >SDL_WasInit</A | |
| 193 > — Check which subsystems are initialized</DT | |
|
181
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194 ><DT |
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195 ><A |
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196 HREF="sdlgeterror.html" |
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197 >SDL_GetError</A |
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198 > — Get SDL error string</DT |
| 0 | 199 ></DL |
| 200 ></DD | |
| 201 ><DT | |
| 202 >6. <A | |
| 203 HREF="video.html" | |
| 204 >Video</A | |
| 205 ></DT | |
| 206 ><DD | |
| 207 ><DL | |
| 208 ><DT | |
| 209 ><A | |
| 210 HREF="sdlgetvideosurface.html" | |
| 211 >SDL_GetVideoSurface</A | |
| 212 > — returns a pointer to the current display surface</DT | |
| 213 ><DT | |
| 214 ><A | |
| 215 HREF="sdlgetvideoinfo.html" | |
| 216 >SDL_GetVideoInfo</A | |
| 217 > — returns a pointer to information about the video hardware</DT | |
| 218 ><DT | |
| 219 ><A | |
| 220 HREF="sdlvideodrivername.html" | |
| 221 >SDL_VideoDriverName</A | |
| 222 > — Obtain the name of the video driver</DT | |
| 223 ><DT | |
| 224 ><A | |
| 225 HREF="sdllistmodes.html" | |
| 226 >SDL_ListModes</A | |
| 227 > — Returns a pointer to an array of available screen dimensions for | |
| 228 the given format and video flags</DT | |
| 229 ><DT | |
| 230 ><A | |
| 231 HREF="sdlvideomodeok.html" | |
| 232 >SDL_VideoModeOK</A | |
| 233 > — Check to see if a particular video mode is supported.</DT | |
| 234 ><DT | |
| 235 ><A | |
| 236 HREF="sdlsetvideomode.html" | |
| 237 >SDL_SetVideoMode</A | |
| 238 > — Set up a video mode with the specified width, height and bits-per-pixel.</DT | |
| 239 ><DT | |
| 240 ><A | |
| 241 HREF="sdlupdaterect.html" | |
| 242 >SDL_UpdateRect</A | |
| 243 > — Makes sure the given area is updated on the given screen.</DT | |
| 244 ><DT | |
| 245 ><A | |
| 246 HREF="sdlupdaterects.html" | |
| 247 >SDL_UpdateRects</A | |
| 248 > — Makes sure the given list of rectangles is updated on the given screen.</DT | |
| 249 ><DT | |
| 250 ><A | |
| 251 HREF="sdlflip.html" | |
| 252 >SDL_Flip</A | |
| 253 > — Swaps screen buffers</DT | |
| 254 ><DT | |
| 255 ><A | |
| 256 HREF="sdlsetcolors.html" | |
| 257 >SDL_SetColors</A | |
| 258 > — Sets a portion of the colormap for the given 8-bit surface.</DT | |
| 259 ><DT | |
| 260 ><A | |
| 261 HREF="sdlsetpalette.html" | |
| 262 >SDL_SetPalette</A | |
| 263 > — Sets the colors in the palette of an 8-bit surface.</DT | |
| 264 ><DT | |
| 265 ><A | |
| 266 HREF="sdlsetgamma.html" | |
| 267 >SDL_SetGamma</A | |
| 268 > — Sets the color gamma function for the display</DT | |
| 269 ><DT | |
| 270 ><A | |
| 271 HREF="sdlgetgammaramp.html" | |
| 272 >SDL_GetGammaRamp</A | |
| 273 > — Gets the color gamma lookup tables for the display</DT | |
| 274 ><DT | |
| 275 ><A | |
| 276 HREF="sdlsetgammaramp.html" | |
| 277 >SDL_SetGammaRamp</A | |
| 278 > — Sets the color gamma lookup tables for the display</DT | |
| 279 ><DT | |
| 280 ><A | |
| 281 HREF="sdlmaprgb.html" | |
| 282 >SDL_MapRGB</A | |
| 283 > — Map a RGB color value to a pixel format.</DT | |
| 284 ><DT | |
| 285 ><A | |
| 286 HREF="sdlmaprgba.html" | |
| 287 >SDL_MapRGBA</A | |
| 288 > — Map a RGBA color value to a pixel format.</DT | |
| 289 ><DT | |
| 290 ><A | |
| 291 HREF="sdlgetrgb.html" | |
| 292 >SDL_GetRGB</A | |
| 293 > — Get RGB values from a pixel in the specified pixel format.</DT | |
| 294 ><DT | |
| 295 ><A | |
| 296 HREF="sdlgetrgba.html" | |
| 297 >SDL_GetRGBA</A | |
| 298 > — Get RGBA values from a pixel in the specified pixel format.</DT | |
| 299 ><DT | |
| 300 ><A | |
| 301 HREF="sdlcreatergbsurface.html" | |
| 302 >SDL_CreateRGBSurface</A | |
| 303 > — Create an empty SDL_Surface</DT | |
| 304 ><DT | |
| 305 ><A | |
| 306 HREF="sdlcreatergbsurfacefrom.html" | |
| 307 >SDL_CreateRGBSurfaceFrom</A | |
| 308 > — Create an SDL_Surface from pixel data</DT | |
| 309 ><DT | |
| 310 ><A | |
| 311 HREF="sdlfreesurface.html" | |
| 312 >SDL_FreeSurface</A | |
|
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313 > — Frees (deletes) a SDL_Surface</DT |
| 0 | 314 ><DT |
| 315 ><A | |
| 316 HREF="sdllocksurface.html" | |
| 317 >SDL_LockSurface</A | |
| 318 > — Lock a surface for directly access.</DT | |
| 319 ><DT | |
| 320 ><A | |
| 321 HREF="sdlunlocksurface.html" | |
| 322 >SDL_UnlockSurface</A | |
| 323 > — Unlocks a previously locked surface.</DT | |
| 324 ><DT | |
| 325 ><A | |
| 326 HREF="sdlloadbmp.html" | |
| 327 >SDL_LoadBMP</A | |
| 328 > — Load a Windows BMP file into an SDL_Surface.</DT | |
| 329 ><DT | |
| 330 ><A | |
| 331 HREF="sdlsavebmp.html" | |
| 332 >SDL_SaveBMP</A | |
| 333 > — Save an SDL_Surface as a Windows BMP file.</DT | |
| 334 ><DT | |
| 335 ><A | |
| 336 HREF="sdlsetcolorkey.html" | |
| 337 >SDL_SetColorKey</A | |
| 338 > — Sets the color key (transparent pixel) in a blittable surface and | |
| 339 RLE acceleration.</DT | |
| 340 ><DT | |
| 341 ><A | |
| 342 HREF="sdlsetalpha.html" | |
| 343 >SDL_SetAlpha</A | |
| 344 > — Adjust the alpha properties of a surface</DT | |
| 345 ><DT | |
| 346 ><A | |
| 347 HREF="sdlsetcliprect.html" | |
| 348 >SDL_SetClipRect</A | |
| 349 > — Sets the clipping rectangle for a surface.</DT | |
| 350 ><DT | |
| 351 ><A | |
| 352 HREF="sdlgetcliprect.html" | |
| 353 >SDL_GetClipRect</A | |
| 354 > — Gets the clipping rectangle for a surface.</DT | |
| 355 ><DT | |
| 356 ><A | |
| 357 HREF="sdlconvertsurface.html" | |
| 358 >SDL_ConvertSurface</A | |
| 359 > — Converts a surface to the same format as another surface.</DT | |
| 360 ><DT | |
| 361 ><A | |
| 362 HREF="sdlblitsurface.html" | |
| 363 >SDL_BlitSurface</A | |
| 364 > — This performs a fast blit from the source surface to the destination surface.</DT | |
| 365 ><DT | |
| 366 ><A | |
| 367 HREF="sdlfillrect.html" | |
| 368 >SDL_FillRect</A | |
| 369 > — This function performs a fast fill of the given rectangle with some color</DT | |
| 370 ><DT | |
| 371 ><A | |
| 372 HREF="sdldisplayformat.html" | |
| 373 >SDL_DisplayFormat</A | |
| 374 > — Convert a surface to the display format</DT | |
| 375 ><DT | |
| 376 ><A | |
| 377 HREF="sdldisplayformatalpha.html" | |
| 378 >SDL_DisplayFormatAlpha</A | |
| 379 > — Convert a surface to the display format</DT | |
| 380 ><DT | |
| 381 ><A | |
| 382 HREF="sdlwarpmouse.html" | |
| 383 >SDL_WarpMouse</A | |
| 384 > — Set the position of the mouse cursor.</DT | |
| 385 ><DT | |
| 386 ><A | |
| 387 HREF="sdlcreatecursor.html" | |
| 388 >SDL_CreateCursor</A | |
| 389 > — Creates a new mouse cursor.</DT | |
| 390 ><DT | |
| 391 ><A | |
| 392 HREF="sdlfreecursor.html" | |
| 393 >SDL_FreeCursor</A | |
| 394 > — Frees a cursor created with SDL_CreateCursor.</DT | |
| 395 ><DT | |
| 396 ><A | |
| 397 HREF="sdlsetcursor.html" | |
| 398 >SDL_SetCursor</A | |
| 399 > — Set the currently active mouse cursor.</DT | |
| 400 ><DT | |
| 401 ><A | |
| 402 HREF="sdlgetcursor.html" | |
| 403 >SDL_GetCursor</A | |
| 404 > — Get the currently active mouse cursor.</DT | |
| 405 ><DT | |
| 406 ><A | |
| 407 HREF="sdlshowcursor.html" | |
| 408 >SDL_ShowCursor</A | |
| 409 > — Toggle whether or not the cursor is shown on the screen.</DT | |
| 410 ><DT | |
| 411 ><A | |
| 412 HREF="sdlglloadlibrary.html" | |
| 413 >SDL_GL_LoadLibrary</A | |
| 414 > — Specify an OpenGL library</DT | |
| 415 ><DT | |
| 416 ><A | |
| 417 HREF="sdlglgetprocaddress.html" | |
| 418 >SDL_GL_GetProcAddress</A | |
| 419 > — Get the address of a GL function</DT | |
| 420 ><DT | |
| 421 ><A | |
| 422 HREF="sdlglgetattribute.html" | |
| 423 >SDL_GL_GetAttribute</A | |
| 424 > — Get the value of a special SDL/OpenGL attribute</DT | |
| 425 ><DT | |
| 426 ><A | |
| 427 HREF="sdlglsetattribute.html" | |
| 428 >SDL_GL_SetAttribute</A | |
| 429 > — Set a special SDL/OpenGL attribute</DT | |
| 430 ><DT | |
| 431 ><A | |
| 432 HREF="sdlglswapbuffers.html" | |
| 433 >SDL_GL_SwapBuffers</A | |
| 434 > — Swap OpenGL framebuffers/Update Display</DT | |
| 435 ><DT | |
| 436 ><A | |
| 437 HREF="sdlcreateyuvoverlay.html" | |
| 438 >SDL_CreateYUVOverlay</A | |
| 439 > — Create a YUV video overlay</DT | |
| 440 ><DT | |
| 441 ><A | |
| 442 HREF="sdllockyuvoverlay.html" | |
| 443 >SDL_LockYUVOverlay</A | |
| 444 > — Lock an overlay</DT | |
| 445 ><DT | |
| 446 ><A | |
| 447 HREF="sdlunlockyuvoverlay.html" | |
| 448 >SDL_UnlockYUVOverlay</A | |
| 449 > — Unlock an overlay</DT | |
| 450 ><DT | |
| 451 ><A | |
| 452 HREF="sdldisplayyuvoverlay.html" | |
| 453 >SDL_DisplayYUVOverlay</A | |
| 454 > — Blit the overlay to the display</DT | |
| 455 ><DT | |
| 456 ><A | |
| 457 HREF="sdlfreeyuvoverlay.html" | |
| 458 >SDL_FreeYUVOverlay</A | |
| 459 > — Free a YUV video overlay</DT | |
| 460 ><DT | |
| 461 ><A | |
| 462 HREF="sdlglattr.html" | |
| 463 >SDL_GLattr</A | |
| 464 > — SDL GL Attributes</DT | |
| 465 ><DT | |
| 466 ><A | |
| 467 HREF="sdlrect.html" | |
| 468 >SDL_Rect</A | |
| 469 > — Defines a rectangular area</DT | |
| 470 ><DT | |
| 471 ><A | |
| 472 HREF="sdlcolor.html" | |
| 473 >SDL_Color</A | |
| 474 > — Format independent color description</DT | |
| 475 ><DT | |
| 476 ><A | |
| 477 HREF="sdlpalette.html" | |
| 478 >SDL_Palette</A | |
| 479 > — Color palette for 8-bit pixel formats</DT | |
| 480 ><DT | |
| 481 ><A | |
| 482 HREF="sdlpixelformat.html" | |
| 483 >SDL_PixelFormat</A | |
| 484 > — Stores surface format information</DT | |
| 485 ><DT | |
| 486 ><A | |
| 487 HREF="sdlsurface.html" | |
| 488 >SDL_Surface</A | |
| 489 > — Graphical Surface Structure</DT | |
| 490 ><DT | |
| 491 ><A | |
| 492 HREF="sdlvideoinfo.html" | |
| 493 >SDL_VideoInfo</A | |
| 494 > — Video Target information</DT | |
| 495 ><DT | |
| 496 ><A | |
| 497 HREF="sdloverlay.html" | |
| 498 >SDL_Overlay</A | |
| 499 > — YUV video overlay</DT | |
| 500 ></DL | |
| 501 ></DD | |
| 502 ><DT | |
| 503 >7. <A | |
| 504 HREF="wm.html" | |
| 505 >Window Management</A | |
| 506 ></DT | |
| 507 ><DD | |
| 508 ><DL | |
| 509 ><DT | |
| 510 ><A | |
| 511 HREF="sdlwmsetcaption.html" | |
| 512 >SDL_WM_SetCaption</A | |
| 513 > — Sets the window tile and icon name.</DT | |
| 514 ><DT | |
| 515 ><A | |
| 516 HREF="sdlwmgetcaption.html" | |
| 517 >SDL_WM_GetCaption</A | |
| 518 > — Gets the window title and icon name.</DT | |
| 519 ><DT | |
| 520 ><A | |
| 521 HREF="sdlwmseticon.html" | |
| 522 >SDL_WM_SetIcon</A | |
| 523 > — Sets the icon for the display window.</DT | |
| 524 ><DT | |
| 525 ><A | |
| 526 HREF="sdlwmiconifywindow.html" | |
| 527 >SDL_WM_IconifyWindow</A | |
| 528 > — Iconify/Minimise the window</DT | |
| 529 ><DT | |
| 530 ><A | |
| 531 HREF="sdlwmtogglefullscreen.html" | |
| 532 >SDL_WM_ToggleFullScreen</A | |
| 533 > — Toggles fullscreen mode</DT | |
| 534 ><DT | |
| 535 ><A | |
| 536 HREF="sdlwmgrabinput.html" | |
| 537 >SDL_WM_GrabInput</A | |
| 538 > — Grabs mouse and keyboard input.</DT | |
| 539 ></DL | |
| 540 ></DD | |
| 541 ><DT | |
| 542 >8. <A | |
| 543 HREF="event.html" | |
| 544 >Events</A | |
| 545 ></DT | |
| 546 ><DD | |
| 547 ><DL | |
| 548 ><DT | |
| 549 ><A | |
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550 HREF="event.html#AEN3307" |
| 0 | 551 >Introduction</A |
| 552 ></DT | |
| 553 ><DT | |
| 554 ><A | |
| 555 HREF="eventstructures.html" | |
| 556 >SDL Event Structures.</A | |
| 557 ></DT | |
| 558 ><DT | |
| 559 ><A | |
| 560 HREF="eventfunctions.html" | |
| 561 >Event Functions.</A | |
| 562 ></DT | |
| 563 ></DL | |
| 564 ></DD | |
| 565 ><DT | |
| 566 >9. <A | |
| 567 HREF="joystick.html" | |
| 568 >Joystick</A | |
| 569 ></DT | |
| 570 ><DD | |
| 571 ><DL | |
| 572 ><DT | |
| 573 ><A | |
| 574 HREF="sdlnumjoysticks.html" | |
| 575 >SDL_NumJoysticks</A | |
| 576 > — Count available joysticks.</DT | |
| 577 ><DT | |
| 578 ><A | |
| 579 HREF="sdljoystickname.html" | |
| 580 >SDL_JoystickName</A | |
| 581 > — Get joystick name.</DT | |
| 582 ><DT | |
| 583 ><A | |
| 584 HREF="sdljoystickopen.html" | |
| 585 >SDL_JoystickOpen</A | |
| 586 > — Opens a joystick for use.</DT | |
| 587 ><DT | |
| 588 ><A | |
| 589 HREF="sdljoystickopened.html" | |
| 590 >SDL_JoystickOpened</A | |
| 591 > — Determine if a joystick has been opened</DT | |
| 592 ><DT | |
| 593 ><A | |
| 594 HREF="sdljoystickindex.html" | |
| 595 >SDL_JoystickIndex</A | |
| 596 > — Get the index of an SDL_Joystick.</DT | |
| 597 ><DT | |
| 598 ><A | |
| 599 HREF="sdljoysticknumaxes.html" | |
| 600 >SDL_JoystickNumAxes</A | |
| 601 > — Get the number of joystick axes</DT | |
| 602 ><DT | |
| 603 ><A | |
| 604 HREF="sdljoysticknumballs.html" | |
| 605 >SDL_JoystickNumBalls</A | |
| 606 > — Get the number of joystick trackballs</DT | |
| 607 ><DT | |
| 608 ><A | |
| 609 HREF="sdljoysticknumhats.html" | |
| 610 >SDL_JoystickNumHats</A | |
| 611 > — Get the number of joystick hats</DT | |
| 612 ><DT | |
| 613 ><A | |
| 614 HREF="sdljoysticknumbuttons.html" | |
| 615 >SDL_JoystickNumButtons</A | |
| 616 > — Get the number of joysitck buttons</DT | |
| 617 ><DT | |
| 618 ><A | |
| 619 HREF="sdljoystickupdate.html" | |
| 620 >SDL_JoystickUpdate</A | |
| 621 > — Updates the state of all joysticks</DT | |
| 622 ><DT | |
| 623 ><A | |
| 624 HREF="sdljoystickgetaxis.html" | |
| 625 >SDL_JoystickGetAxis</A | |
| 626 > — Get the current state of an axis</DT | |
| 627 ><DT | |
| 628 ><A | |
| 629 HREF="sdljoystickgethat.html" | |
| 630 >SDL_JoystickGetHat</A | |
| 631 > — Get the current state of a joystick hat</DT | |
| 632 ><DT | |
| 633 ><A | |
| 634 HREF="sdljoystickgetbutton.html" | |
| 635 >SDL_JoystickGetButton</A | |
| 636 > — Get the current state of a given button on a given joystick</DT | |
| 637 ><DT | |
| 638 ><A | |
| 639 HREF="sdljoystickgetball.html" | |
| 640 >SDL_JoystickGetBall</A | |
| 641 > — Get relative trackball motion</DT | |
| 642 ><DT | |
| 643 ><A | |
| 644 HREF="sdljoystickclose.html" | |
| 645 >SDL_JoystickClose</A | |
| 646 > — Closes a previously opened joystick</DT | |
| 647 ></DL | |
| 648 ></DD | |
| 649 ><DT | |
| 650 >10. <A | |
| 651 HREF="audio.html" | |
| 652 >Audio</A | |
| 653 ></DT | |
| 654 ><DD | |
| 655 ><DL | |
| 656 ><DT | |
| 657 ><A | |
| 658 HREF="sdlaudiospec.html" | |
| 659 >SDL_AudioSpec</A | |
| 660 > — Audio Specification Structure</DT | |
| 661 ><DT | |
| 662 ><A | |
| 663 HREF="sdlopenaudio.html" | |
| 664 >SDL_OpenAudio</A | |
| 665 > — Opens the audio device with the desired parameters.</DT | |
| 666 ><DT | |
| 667 ><A | |
| 668 HREF="sdlpauseaudio.html" | |
| 669 >SDL_PauseAudio</A | |
| 670 > — Pauses and unpauses the audio callback processing</DT | |
| 671 ><DT | |
| 672 ><A | |
| 673 HREF="sdlgetaudiostatus.html" | |
| 674 >SDL_GetAudioStatus</A | |
| 675 > — Get the current audio state</DT | |
| 676 ><DT | |
| 677 ><A | |
| 678 HREF="sdlloadwav.html" | |
| 679 >SDL_LoadWAV</A | |
| 680 > — Load a WAVE file</DT | |
| 681 ><DT | |
| 682 ><A | |
| 683 HREF="sdlfreewav.html" | |
| 684 >SDL_FreeWAV</A | |
| 685 > — Frees previously opened WAV data</DT | |
| 686 ><DT | |
| 687 ><A | |
| 688 HREF="sdlaudiocvt.html" | |
| 689 >SDL_AudioCVT</A | |
| 690 > — Audio Conversion Structure</DT | |
| 691 ><DT | |
| 692 ><A | |
| 693 HREF="sdlbuildaudiocvt.html" | |
| 694 >SDL_BuildAudioCVT</A | |
| 695 > — Initializes a SDL_AudioCVT structure for conversion</DT | |
| 696 ><DT | |
| 697 ><A | |
| 698 HREF="sdlconvertaudio.html" | |
| 699 >SDL_ConvertAudio</A | |
| 700 > — Convert audio data to a desired audio format.</DT | |
| 701 ><DT | |
| 702 ><A | |
| 703 HREF="sdlmixaudio.html" | |
| 704 >SDL_MixAudio</A | |
| 705 > — Mix audio data</DT | |
| 706 ><DT | |
| 707 ><A | |
| 708 HREF="sdllockaudio.html" | |
| 709 >SDL_LockAudio</A | |
| 710 > — Lock out the callback function</DT | |
| 711 ><DT | |
| 712 ><A | |
| 713 HREF="sdlunlockaudio.html" | |
| 714 >SDL_UnlockAudio</A | |
| 715 > — Unlock the callback function</DT | |
| 716 ><DT | |
| 717 ><A | |
| 718 HREF="sdlcloseaudio.html" | |
| 719 >SDL_CloseAudio</A | |
| 720 > — Shuts down audio processing and closes the audio device.</DT | |
| 721 ></DL | |
| 722 ></DD | |
| 723 ><DT | |
| 724 >11. <A | |
| 725 HREF="cdrom.html" | |
| 726 >CD-ROM</A | |
| 727 ></DT | |
| 728 ><DD | |
| 729 ><DL | |
| 730 ><DT | |
| 731 ><A | |
| 732 HREF="sdlcdnumdrives.html" | |
| 733 >SDL_CDNumDrives</A | |
| 734 > — Returns the number of CD-ROM drives on the system.</DT | |
| 735 ><DT | |
| 736 ><A | |
| 737 HREF="sdlcdname.html" | |
| 738 >SDL_CDName</A | |
| 739 > — Returns a human-readable, system-dependent identifier for the CD-ROM.</DT | |
| 740 ><DT | |
| 741 ><A | |
| 742 HREF="sdlcdopen.html" | |
| 743 >SDL_CDOpen</A | |
| 744 > — Opens a CD-ROM drive for access.</DT | |
| 745 ><DT | |
| 746 ><A | |
| 747 HREF="sdlcdstatus.html" | |
| 748 >SDL_CDStatus</A | |
| 749 > — Returns the current status of the given drive.</DT | |
| 750 ><DT | |
| 751 ><A | |
| 752 HREF="sdlcdplay.html" | |
| 753 >SDL_CDPlay</A | |
| 754 > — Play a CD</DT | |
| 755 ><DT | |
| 756 ><A | |
| 757 HREF="sdlcdplaytracks.html" | |
| 758 >SDL_CDPlayTracks</A | |
| 759 > — Play the given CD track(s)</DT | |
| 760 ><DT | |
| 761 ><A | |
| 762 HREF="sdlcdpause.html" | |
| 763 >SDL_CDPause</A | |
| 764 > — Pauses a CDROM</DT | |
| 765 ><DT | |
| 766 ><A | |
| 767 HREF="sdlcdresume.html" | |
| 768 >SDL_CDResume</A | |
| 769 > — Resumes a CDROM</DT | |
| 770 ><DT | |
| 771 ><A | |
| 772 HREF="sdlcdstop.html" | |
| 773 >SDL_CDStop</A | |
| 774 > — Stops a CDROM</DT | |
| 775 ><DT | |
| 776 ><A | |
| 777 HREF="sdlcdeject.html" | |
| 778 >SDL_CDEject</A | |
| 779 > — Ejects a CDROM</DT | |
| 780 ><DT | |
| 781 ><A | |
| 782 HREF="sdlcdclose.html" | |
| 783 >SDL_CDClose</A | |
| 784 > — Closes a SDL_CD handle</DT | |
| 785 ><DT | |
| 786 ><A | |
| 787 HREF="sdlcd.html" | |
| 788 >SDL_CD</A | |
| 789 > — CDROM Drive Information</DT | |
| 790 ><DT | |
| 791 ><A | |
| 792 HREF="sdlcdtrack.html" | |
| 793 >SDL_CDtrack</A | |
| 794 > — CD Track Information Structure</DT | |
| 795 ></DL | |
| 796 ></DD | |
| 797 ><DT | |
| 798 >12. <A | |
| 799 HREF="thread.html" | |
| 800 >Multi-threaded Programming</A | |
| 801 ></DT | |
| 802 ><DD | |
| 803 ><DL | |
| 804 ><DT | |
| 805 ><A | |
| 806 HREF="sdlcreatethread.html" | |
| 807 >SDL_CreateThread</A | |
| 808 > — Creates a new thread of execution that shares its parent's properties.</DT | |
| 809 ><DT | |
| 810 ><A | |
| 811 HREF="sdlthreadid.html" | |
| 812 >SDL_ThreadID</A | |
| 813 > — Get the 32-bit thread identifier for the current thread.</DT | |
| 814 ><DT | |
| 815 ><A | |
| 816 HREF="sdlgetthreadid.html" | |
| 817 >SDL_GetThreadID</A | |
| 818 > — Get the SDL thread ID of a SDL_Thread</DT | |
| 819 ><DT | |
| 820 ><A | |
| 821 HREF="sdlwaitthread.html" | |
| 822 >SDL_WaitThread</A | |
| 823 > — Wait for a thread to finish.</DT | |
| 824 ><DT | |
| 825 ><A | |
| 826 HREF="sdlkillthread.html" | |
| 827 >SDL_KillThread</A | |
| 828 > — Gracelessly terminates the thread.</DT | |
| 829 ><DT | |
| 830 ><A | |
| 831 HREF="sdlcreatemutex.html" | |
| 832 >SDL_CreateMutex</A | |
| 833 > — Create a mutex</DT | |
| 834 ><DT | |
| 835 ><A | |
| 836 HREF="sdldestroymutex.html" | |
| 837 >SDL_DestroyMutex</A | |
| 838 > — Destroy a mutex</DT | |
| 839 ><DT | |
| 840 ><A | |
| 841 HREF="sdlmutexp.html" | |
| 842 >SDL_mutexP</A | |
| 843 > — Lock a mutex</DT | |
| 844 ><DT | |
| 845 ><A | |
| 846 HREF="sdlmutexv.html" | |
| 847 >SDL_mutexV</A | |
| 848 > — Unlock a mutex</DT | |
| 849 ><DT | |
| 850 ><A | |
| 851 HREF="sdlcreatesemaphore.html" | |
| 852 >SDL_CreateSemaphore</A | |
| 853 > — Creates a new semaphore and assigns an initial value to it.</DT | |
| 854 ><DT | |
| 855 ><A | |
| 856 HREF="sdldestroysemaphore.html" | |
| 857 >SDL_DestroySemaphore</A | |
| 858 > — Destroys a semaphore that was created by <A | |
| 859 HREF="sdlcreatesemaphore.html" | |
| 860 >SDL_CreateSemaphore</A | |
| 861 >.</DT | |
| 862 ><DT | |
| 863 ><A | |
| 864 HREF="sdlsemwait.html" | |
| 865 >SDL_SemWait</A | |
| 866 > — Lock a semaphore and suspend the thread if the semaphore value is zero.</DT | |
| 867 ><DT | |
| 868 ><A | |
| 869 HREF="sdlsemtrywait.html" | |
| 870 >SDL_SemTryWait</A | |
| 871 > — Attempt to lock a semaphore but don't suspend the thread.</DT | |
| 872 ><DT | |
| 873 ><A | |
| 874 HREF="sdlsemwaittimeout.html" | |
| 875 >SDL_SemWaitTimeout</A | |
| 876 > — Lock a semaphore, but only wait up to a specified maximum time.</DT | |
| 877 ><DT | |
| 878 ><A | |
| 879 HREF="sdlsempost.html" | |
| 880 >SDL_SemPost</A | |
| 881 > — Unlock a semaphore.</DT | |
| 882 ><DT | |
| 883 ><A | |
| 884 HREF="sdlsemvalue.html" | |
| 885 >SDL_SemValue</A | |
| 886 > — Return the current value of a semaphore.</DT | |
| 887 ><DT | |
| 888 ><A | |
| 889 HREF="sdlcreatecond.html" | |
| 890 >SDL_CreateCond</A | |
| 891 > — Create a condition variable</DT | |
| 892 ><DT | |
| 893 ><A | |
| 894 HREF="sdldestroycond.html" | |
| 895 >SDL_DestroyCond</A | |
| 896 > — Destroy a condition variable</DT | |
| 897 ><DT | |
| 898 ><A | |
| 899 HREF="sdlcondsignal.html" | |
| 900 >SDL_CondSignal</A | |
| 901 > — Restart a thread wait on a condition variable</DT | |
| 902 ><DT | |
| 903 ><A | |
| 904 HREF="sdlcondbroadcast.html" | |
| 905 >SDL_CondBroadcast</A | |
| 906 > — Restart all threads waiting on a condition variable</DT | |
| 907 ><DT | |
| 908 ><A | |
| 909 HREF="sdlcondwait.html" | |
| 910 >SDL_CondWait</A | |
| 911 > — Wait on a condition variable</DT | |
| 912 ><DT | |
| 913 ><A | |
| 914 HREF="sdlcondwaittimeout.html" | |
| 915 >SDL_CondWaitTimeout</A | |
| 916 > — Wait on a condition variable, with timeout</DT | |
| 917 ></DL | |
| 918 ></DD | |
| 919 ><DT | |
| 920 >13. <A | |
| 921 HREF="time.html" | |
| 922 >Time</A | |
| 923 ></DT | |
| 924 ><DD | |
| 925 ><DL | |
| 926 ><DT | |
| 927 ><A | |
| 928 HREF="sdlgetticks.html" | |
| 929 >SDL_GetTicks</A | |
| 930 > — Get the number of milliseconds since the SDL library initialization.</DT | |
| 931 ><DT | |
| 932 ><A | |
| 933 HREF="sdldelay.html" | |
| 934 >SDL_Delay</A | |
| 935 > — Wait a specified number of milliseconds before returning.</DT | |
| 936 ><DT | |
| 937 ><A | |
| 938 HREF="sdladdtimer.html" | |
| 939 >SDL_AddTimer</A | |
| 940 > — Add a timer which will call a callback after the specified number of milliseconds has | |
| 941 elapsed.</DT | |
| 942 ><DT | |
| 943 ><A | |
| 944 HREF="sdlremovetimer.html" | |
| 945 >SDL_RemoveTimer</A | |
| 946 > — Remove a timer which was added with | |
| 947 <A | |
| 948 HREF="sdladdtimer.html" | |
| 949 >SDL_AddTimer</A | |
| 950 >.</DT | |
| 951 ><DT | |
| 952 ><A | |
| 953 HREF="sdlsettimer.html" | |
| 954 >SDL_SetTimer</A | |
| 955 > — Set a callback to run after the specified number of milliseconds has | |
| 956 elapsed.</DT | |
| 957 ></DL | |
| 958 ></DD | |
| 959 ></DL | |
| 960 ></DD | |
| 961 ></DL | |
| 962 ></DIV | |
| 963 ><DIV | |
| 964 CLASS="LOT" | |
| 965 ><DL | |
| 966 CLASS="LOT" | |
| 967 ><DT | |
| 968 ><B | |
| 969 >List of Tables</B | |
| 970 ></DT | |
| 971 ><DT | |
| 972 >8-1. <A | |
|
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973 HREF="sdlkey.html#AEN4336" |
| 0 | 974 >SDL Keysym definitions</A |
| 975 ></DT | |
| 976 ><DT | |
| 977 >8-2. <A | |
| 978 HREF="sdlkey.html#SDLMOD" | |
| 979 >SDL modifier definitions</A | |
| 980 ></DT | |
| 981 ></DL | |
| 982 ></DIV | |
| 983 ><DIV | |
| 984 CLASS="LOT" | |
| 985 ><DL | |
| 986 CLASS="LOT" | |
| 987 ><DT | |
| 988 ><B | |
| 989 >List of Examples</B | |
| 990 ></DT | |
| 991 ><DT | |
|
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992 >1-1. <A |
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993 HREF="guidebasicsinit.html#AEN60" |
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994 >Initializing SDL</A |
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995 ></DT |
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996 ><DT |
| 0 | 997 >2-1. <A |
|
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998 HREF="guidevideo.html#AEN71" |
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999 >Initializing the Video Display</A |
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1000 ></DT |
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1001 ><DT |
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1002 >2-2. <A |
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1003 HREF="guidevideo.html#AEN77" |
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1004 >Initializing the Best Video Mode</A |
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1005 ></DT |
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1006 ><DT |
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1007 >2-3. <A |
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1008 HREF="guidevideo.html#AEN83" |
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1009 >Loading and Displaying a BMP File</A |
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1010 ></DT |
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1011 ><DT |
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1012 >2-4. <A |
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1013 HREF="guidevideo.html#AEN90" |
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1014 >getpixel()</A |
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1015 ></DT |
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1016 ><DT |
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1017 >2-5. <A |
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1018 HREF="guidevideo.html#AEN93" |
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1019 >putpixel()</A |
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1020 ></DT |
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1021 ><DT |
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1022 >2-6. <A |
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1023 HREF="guidevideo.html#AEN97" |
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1024 >Using putpixel()</A |
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1025 ></DT |
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1026 ><DT |
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1027 >2-7. <A |
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1028 HREF="guidevideoopengl.html#AEN114" |
|
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|
1029 >Initializing SDL with OpenGL</A |
|
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1030 ></DT |
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1031 ><DT |
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|
1032 >2-8. <A |
|
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|
1033 HREF="guidevideoopengl.html#AEN128" |
|
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|
1034 >SDL and OpenGL</A |
| 0 | 1035 ></DT |
| 1036 ><DT | |
| 1037 >3-1. <A | |
|
55
55f1f1b3e27d
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|
1038 HREF="guideinput.html#AEN141" |
|
55f1f1b3e27d
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|
1039 >Initializing SDL with Joystick Support</A |
|
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1040 ></DT |
|
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|
1041 ><DT |
|
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|
1042 >3-2. <A |
|
55f1f1b3e27d
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|
1043 HREF="guideinput.html#AEN154" |
|
55f1f1b3e27d
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|
1044 >Querying the Number of Available Joysticks</A |
|
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|
1045 ></DT |
|
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|
1046 ><DT |
|
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|
1047 >3-3. <A |
|
55f1f1b3e27d
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|
1048 HREF="guideinput.html#AEN183" |
|
55f1f1b3e27d
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|
1049 >Opening a Joystick</A |
|
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|
1050 ></DT |
|
55f1f1b3e27d
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|
1051 ><DT |
|
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|
1052 >3-4. <A |
|
55f1f1b3e27d
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|
1053 HREF="guideinput.html#AEN191" |
|
55f1f1b3e27d
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|
1054 >Joystick Axis Events</A |
|
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|
1055 ></DT |
|
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|
1056 ><DT |
|
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|
1057 >3-5. <A |
|
55f1f1b3e27d
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|
1058 HREF="guideinput.html#AEN195" |
|
55f1f1b3e27d
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|
1059 >More Joystick Axis Events</A |
|
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|
1060 ></DT |
|
55f1f1b3e27d
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|
1061 ><DT |
|
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|
1062 >3-6. <A |
|
55f1f1b3e27d
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|
1063 HREF="guideinput.html#AEN203" |
|
55f1f1b3e27d
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|
1064 >Joystick Button Events</A |
|
55f1f1b3e27d
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|
1065 ></DT |
|
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|
1066 ><DT |
|
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|
1067 >3-7. <A |
|
55f1f1b3e27d
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|
1068 HREF="guideinput.html#AEN217" |
|
55f1f1b3e27d
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|
1069 >Joystick Ball Events</A |
|
55f1f1b3e27d
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|
1070 ></DT |
|
55f1f1b3e27d
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|
1071 ><DT |
|
55f1f1b3e27d
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|
1072 >3-8. <A |
|
55f1f1b3e27d
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|
1073 HREF="guideinput.html#AEN244" |
|
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|
1074 >Joystick Hat Events</A |
|
55f1f1b3e27d
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|
1075 ></DT |
|
55f1f1b3e27d
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|
1076 ><DT |
|
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|
1077 >3-9. <A |
|
55f1f1b3e27d
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|
1078 HREF="guideinput.html#AEN265" |
|
55f1f1b3e27d
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|
1079 >Querying Joystick Characteristics</A |
|
55f1f1b3e27d
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|
1080 ></DT |
|
55f1f1b3e27d
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|
1081 ><DT |
|
55f1f1b3e27d
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|
1082 >3-10. <A |
|
55f1f1b3e27d
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|
1083 HREF="guideinputkeyboard.html#AEN334" |
|
55f1f1b3e27d
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|
1084 >Reading Keyboard Events</A |
|
55f1f1b3e27d
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|
1085 ></DT |
|
55f1f1b3e27d
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|
1086 ><DT |
|
55f1f1b3e27d
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|
1087 >3-11. <A |
|
55f1f1b3e27d
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|
1088 HREF="guideinputkeyboard.html#AEN351" |
|
55f1f1b3e27d
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|
1089 >Interpreting Key Event Information</A |
|
55f1f1b3e27d
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|
1090 ></DT |
|
55f1f1b3e27d
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|
1091 ><DT |
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|
1092 >3-12. <A |
|
55f1f1b3e27d
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|
1093 HREF="guideinputkeyboard.html#AEN363" |
|
55f1f1b3e27d
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|
1094 >Proper Game Movement</A |
| 0 | 1095 ></DT |
| 1096 ></DL | |
| 1097 ></DIV | |
| 1098 ></DIV | |
| 1099 ><DIV | |
| 1100 CLASS="NAVFOOTER" | |
| 1101 ><HR | |
| 1102 ALIGN="LEFT" | |
| 1103 WIDTH="100%"><TABLE | |
| 1104 WIDTH="100%" | |
| 1105 BORDER="0" | |
| 1106 CELLPADDING="0" | |
| 1107 CELLSPACING="0" | |
| 1108 ><TR | |
| 1109 ><TD | |
| 1110 WIDTH="33%" | |
| 1111 ALIGN="left" | |
| 1112 VALIGN="top" | |
| 1113 > </TD | |
| 1114 ><TD | |
| 1115 WIDTH="34%" | |
| 1116 ALIGN="center" | |
| 1117 VALIGN="top" | |
| 1118 > </TD | |
| 1119 ><TD | |
| 1120 WIDTH="33%" | |
| 1121 ALIGN="right" | |
| 1122 VALIGN="top" | |
| 1123 ><A | |
| 1124 HREF="guide.html" | |
| 1125 >Next</A | |
| 1126 ></TD | |
| 1127 ></TR | |
| 1128 ><TR | |
| 1129 ><TD | |
| 1130 WIDTH="33%" | |
| 1131 ALIGN="left" | |
| 1132 VALIGN="top" | |
| 1133 > </TD | |
| 1134 ><TD | |
| 1135 WIDTH="34%" | |
| 1136 ALIGN="center" | |
| 1137 VALIGN="top" | |
| 1138 > </TD | |
| 1139 ><TD | |
| 1140 WIDTH="33%" | |
| 1141 ALIGN="right" | |
| 1142 VALIGN="top" | |
| 1143 >SDL Guide</TD | |
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| 1146 ></DIV | |
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