Mercurial > sdl-ios-xcode
annotate docs/html/sdlsetvideomode.html @ 2818:4e09acde4333
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author | Ryan C. Gordon <icculus@icculus.org> |
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date | Mon, 01 Dec 2008 09:09:31 +0000 |
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rev | line source |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_SetVideoMode</TITLE | |
5 ><META | |
6 NAME="GENERATOR" | |
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7 CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ |
0 | 8 "><LINK |
9 REL="HOME" | |
10 TITLE="SDL Library Documentation" | |
11 HREF="index.html"><LINK | |
12 REL="UP" | |
13 TITLE="Video" | |
14 HREF="video.html"><LINK | |
15 REL="PREVIOUS" | |
16 TITLE="SDL_VideoModeOK" | |
17 HREF="sdlvideomodeok.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_UpdateRect" | |
20 HREF="sdlupdaterect.html"></HEAD | |
21 ><BODY | |
22 CLASS="REFENTRY" | |
23 BGCOLOR="#FFF8DC" | |
24 TEXT="#000000" | |
25 LINK="#0000ee" | |
26 VLINK="#551a8b" | |
27 ALINK="#ff0000" | |
28 ><DIV | |
29 CLASS="NAVHEADER" | |
30 ><TABLE | |
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31 SUMMARY="Header navigation table" |
0 | 32 WIDTH="100%" |
33 BORDER="0" | |
34 CELLPADDING="0" | |
35 CELLSPACING="0" | |
36 ><TR | |
37 ><TH | |
38 COLSPAN="3" | |
39 ALIGN="center" | |
40 >SDL Library Documentation</TH | |
41 ></TR | |
42 ><TR | |
43 ><TD | |
44 WIDTH="10%" | |
45 ALIGN="left" | |
46 VALIGN="bottom" | |
47 ><A | |
48 HREF="sdlvideomodeok.html" | |
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49 ACCESSKEY="P" |
0 | 50 >Prev</A |
51 ></TD | |
52 ><TD | |
53 WIDTH="80%" | |
54 ALIGN="center" | |
55 VALIGN="bottom" | |
56 ></TD | |
57 ><TD | |
58 WIDTH="10%" | |
59 ALIGN="right" | |
60 VALIGN="bottom" | |
61 ><A | |
62 HREF="sdlupdaterect.html" | |
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63 ACCESSKEY="N" |
0 | 64 >Next</A |
65 ></TD | |
66 ></TR | |
67 ></TABLE | |
68 ><HR | |
69 ALIGN="LEFT" | |
70 WIDTH="100%"></DIV | |
71 ><H1 | |
72 ><A | |
73 NAME="SDLSETVIDEOMODE" | |
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74 ></A |
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75 >SDL_SetVideoMode</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN1239" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_SetVideoMode -- Set up a video mode with the specified width, height and bits-per-pixel.</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN1242" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN1243" |
0 | 95 ></A |
96 ><P | |
97 ></P | |
98 ><PRE | |
99 CLASS="FUNCSYNOPSISINFO" | |
100 >#include "SDL.h"</PRE | |
101 ><P | |
102 ><CODE | |
103 ><CODE | |
104 CLASS="FUNCDEF" | |
105 >SDL_Surface *<B | |
106 CLASS="FSFUNC" | |
107 >SDL_SetVideoMode</B | |
108 ></CODE | |
109 >(int width, int height, int bpp, Uint32 flags);</CODE | |
110 ></P | |
111 ><P | |
112 ></P | |
113 ></DIV | |
114 ></DIV | |
115 ><DIV | |
116 CLASS="REFSECT1" | |
117 ><A | |
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118 NAME="AEN1249" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
123 >Set up a video mode with the specified width, height and bits-per-pixel.</P | |
124 ><P | |
125 >If <TT | |
126 CLASS="PARAMETER" | |
127 ><I | |
128 >bpp</I | |
129 ></TT | |
130 > is 0, it is treated as the | |
131 current display bits per pixel.</P | |
132 ><P | |
133 >The <TT | |
134 CLASS="PARAMETER" | |
135 ><I | |
136 >flags</I | |
137 ></TT | |
138 > parameter is the same as the <TT | |
139 CLASS="STRUCTFIELD" | |
140 ><I | |
141 >flags</I | |
142 ></TT | |
143 > field of the <A | |
144 HREF="sdlsurface.html" | |
145 ><SPAN | |
146 CLASS="STRUCTNAME" | |
147 >SDL_Surface</SPAN | |
148 ></A | |
149 > structure. OR'd combinations of the following values are valid.</P | |
150 ><DIV | |
151 CLASS="INFORMALTABLE" | |
152 ><A | |
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153 NAME="AEN1259" |
0 | 154 ></A |
155 ><P | |
156 ></P | |
157 ><TABLE | |
158 BORDER="1" | |
159 CLASS="CALSTABLE" | |
160 ><TBODY | |
161 ><TR | |
162 ><TD | |
163 ALIGN="LEFT" | |
164 VALIGN="TOP" | |
165 ><TT | |
166 CLASS="LITERAL" | |
167 >SDL_SWSURFACE</TT | |
168 ></TD | |
169 ><TD | |
170 ALIGN="LEFT" | |
171 VALIGN="TOP" | |
172 >Create the video surface in system memory</TD | |
173 ></TR | |
174 ><TR | |
175 ><TD | |
176 ALIGN="LEFT" | |
177 VALIGN="TOP" | |
178 ><TT | |
179 CLASS="LITERAL" | |
180 >SDL_HWSURFACE</TT | |
181 ></TD | |
182 ><TD | |
183 ALIGN="LEFT" | |
184 VALIGN="TOP" | |
185 >Create the video surface in video memory</TD | |
186 ></TR | |
187 ><TR | |
188 ><TD | |
189 ALIGN="LEFT" | |
190 VALIGN="TOP" | |
191 ><TT | |
192 CLASS="LITERAL" | |
193 >SDL_ASYNCBLIT</TT | |
194 ></TD | |
195 ><TD | |
196 ALIGN="LEFT" | |
197 VALIGN="TOP" | |
181
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198 >Enables the use of asynchronous updates of the display surface. This will |
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199 usually slow down blitting on single CPU machines, but may provide a speed |
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200 increase on SMP systems.</TD |
0 | 201 ></TR |
202 ><TR | |
203 ><TD | |
204 ALIGN="LEFT" | |
205 VALIGN="TOP" | |
206 ><TT | |
207 CLASS="LITERAL" | |
208 >SDL_ANYFORMAT</TT | |
209 ></TD | |
210 ><TD | |
211 ALIGN="LEFT" | |
212 VALIGN="TOP" | |
181
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213 >Normally, if a video surface of the requested bits-per-pixel (<TT |
0 | 214 CLASS="PARAMETER" |
215 ><I | |
216 >bpp</I | |
217 ></TT | |
218 >) is not available, SDL will emulate one with a shadow surface. Passing <TT | |
219 CLASS="LITERAL" | |
220 >SDL_ANYFORMAT</TT | |
181
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221 > prevents this and causes SDL to use the video surface, regardless of its pixel depth.</TD |
0 | 222 ></TR |
223 ><TR | |
224 ><TD | |
225 ALIGN="LEFT" | |
226 VALIGN="TOP" | |
227 ><TT | |
228 CLASS="LITERAL" | |
229 >SDL_HWPALETTE</TT | |
230 ></TD | |
231 ><TD | |
232 ALIGN="LEFT" | |
233 VALIGN="TOP" | |
234 >Give SDL exclusive palette access. Without this flag you may not always get the the colors you request with <A | |
235 HREF="sdlsetcolors.html" | |
236 ><TT | |
237 CLASS="FUNCTION" | |
238 >SDL_SetColors</TT | |
239 ></A | |
181
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240 > or <A |
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241 HREF="sdlsetpalette.html" |
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242 ><TT |
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243 CLASS="FUNCTION" |
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244 >SDL_SetPalette</TT |
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245 ></A |
0 | 246 >.</TD |
247 ></TR | |
248 ><TR | |
249 ><TD | |
250 ALIGN="LEFT" | |
251 VALIGN="TOP" | |
252 ><TT | |
253 CLASS="LITERAL" | |
254 >SDL_DOUBLEBUF</TT | |
255 ></TD | |
256 ><TD | |
257 ALIGN="LEFT" | |
258 VALIGN="TOP" | |
181
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259 >Enable hardware double buffering; only valid with SDL_HWSURFACE. Calling |
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260 <A |
0 | 261 HREF="sdlflip.html" |
262 ><TT | |
263 CLASS="FUNCTION" | |
264 >SDL_Flip</TT | |
265 ></A | |
181
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266 > will flip the |
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267 buffers and update the screen. All drawing will take place on the surface |
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268 that is not displayed at the moment. If double buffering could not be enabled |
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269 then <TT |
0 | 270 CLASS="FUNCTION" |
271 >SDL_Flip</TT | |
181
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272 > will just perform a |
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273 <A |
0 | 274 HREF="sdlupdaterect.html" |
275 ><TT | |
276 CLASS="FUNCTION" | |
277 >SDL_UpdateRect</TT | |
278 ></A | |
181
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279 > |
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280 on the entire screen.</TD |
0 | 281 ></TR |
282 ><TR | |
283 ><TD | |
284 ALIGN="LEFT" | |
285 VALIGN="TOP" | |
286 ><TT | |
287 CLASS="LITERAL" | |
288 >SDL_FULLSCREEN</TT | |
289 ></TD | |
290 ><TD | |
291 ALIGN="LEFT" | |
292 VALIGN="TOP" | |
181
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293 >SDL will attempt to use a fullscreen mode. If a hardware resolution change is |
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294 not possible (for whatever reason), the next higher resolution will be used and |
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295 the display window centered on a black background.</TD |
0 | 296 ></TR |
297 ><TR | |
298 ><TD | |
299 ALIGN="LEFT" | |
300 VALIGN="TOP" | |
301 ><TT | |
302 CLASS="LITERAL" | |
303 >SDL_OPENGL</TT | |
304 ></TD | |
305 ><TD | |
306 ALIGN="LEFT" | |
307 VALIGN="TOP" | |
308 >Create an OpenGL rendering context. You should have previously set OpenGL video attributes with <A | |
309 HREF="sdlglsetattribute.html" | |
310 ><TT | |
311 CLASS="FUNCTION" | |
312 >SDL_GL_SetAttribute</TT | |
313 ></A | |
314 >.</TD | |
315 ></TR | |
316 ><TR | |
317 ><TD | |
318 ALIGN="LEFT" | |
319 VALIGN="TOP" | |
320 ><TT | |
321 CLASS="LITERAL" | |
322 >SDL_OPENGLBLIT</TT | |
323 ></TD | |
324 ><TD | |
325 ALIGN="LEFT" | |
326 VALIGN="TOP" | |
181
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327 >Create an OpenGL rendering context, like above, but allow normal blitting |
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328 operations. The screen (2D) surface may have an alpha channel, and |
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329 <A |
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330 HREF="sdlupdaterects.html" |
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331 ><TT |
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332 CLASS="FUNCTION" |
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333 >SDL_UpdateRects</TT |
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334 ></A |
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335 > |
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336 must be used for updating changes to the screen surface. NOTE: This option |
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337 is kept for compatibility only, and is <SPAN |
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338 CLASS="emphasis" |
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339 ><I |
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340 CLASS="EMPHASIS" |
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341 >not</I |
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342 ></SPAN |
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343 > recommended for |
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344 new code.</TD |
0 | 345 ></TR |
346 ><TR | |
347 ><TD | |
348 ALIGN="LEFT" | |
349 VALIGN="TOP" | |
350 ><TT | |
351 CLASS="LITERAL" | |
352 >SDL_RESIZABLE</TT | |
353 ></TD | |
354 ><TD | |
355 ALIGN="LEFT" | |
356 VALIGN="TOP" | |
357 >Create a resizable window. When the window is resized by the user a <A | |
358 HREF="sdlresizeevent.html" | |
359 ><TT | |
360 CLASS="LITERAL" | |
361 >SDL_VIDEORESIZE</TT | |
362 ></A | |
363 > event is generated and <TT | |
364 CLASS="FUNCTION" | |
365 >SDL_SetVideoMode</TT | |
366 > can be called again with the new size.</TD | |
367 ></TR | |
368 ><TR | |
369 ><TD | |
370 ALIGN="LEFT" | |
371 VALIGN="TOP" | |
372 ><TT | |
373 CLASS="LITERAL" | |
374 >SDL_NOFRAME</TT | |
375 ></TD | |
376 ><TD | |
377 ALIGN="LEFT" | |
378 VALIGN="TOP" | |
379 >If possible, <TT | |
380 CLASS="LITERAL" | |
381 >SDL_NOFRAME</TT | |
382 > causes SDL to create a window with no title bar or frame decoration. Fullscreen modes automatically have this flag set.</TD | |
383 ></TR | |
384 ></TBODY | |
385 ></TABLE | |
386 ><P | |
387 ></P | |
388 ></DIV | |
389 ><DIV | |
390 CLASS="NOTE" | |
391 ><BLOCKQUOTE | |
392 CLASS="NOTE" | |
393 ><P | |
394 ><B | |
395 >Note: </B | |
396 >Whatever <TT | |
397 CLASS="PARAMETER" | |
398 ><I | |
399 >flags</I | |
400 ></TT | |
401 > <TT | |
402 CLASS="FUNCTION" | |
403 >SDL_SetVideoMode</TT | |
404 > could satisfy are set in the <TT | |
405 CLASS="STRUCTFIELD" | |
406 ><I | |
407 >flags</I | |
408 ></TT | |
409 > member of the returned surface.</P | |
410 ></BLOCKQUOTE | |
411 ></DIV | |
181
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412 ><DIV |
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413 CLASS="NOTE" |
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414 ><BLOCKQUOTE |
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415 CLASS="NOTE" |
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416 ><P |
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417 ><B |
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418 >Note: </B |
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419 >The <TT |
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420 CLASS="PARAMETER" |
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421 ><I |
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422 >bpp</I |
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423 ></TT |
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424 > parameter is the number of bits per pixel, |
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425 so a <TT |
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426 CLASS="PARAMETER" |
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427 ><I |
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428 >bpp</I |
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429 ></TT |
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430 > of 24 uses the packed representation of |
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431 3 bytes/pixel. For the more common 4 bytes/pixel mode, use a |
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432 <TT |
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433 CLASS="PARAMETER" |
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434 ><I |
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435 >bpp</I |
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436 ></TT |
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437 > of 32. Somewhat oddly, both 15 and 16 will |
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438 request a 2 bytes/pixel mode, but different pixel formats.</P |
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439 ></BLOCKQUOTE |
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440 ></DIV |
0 | 441 ></DIV |
442 ><DIV | |
443 CLASS="REFSECT1" | |
444 ><A | |
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445 NAME="AEN1336" |
0 | 446 ></A |
447 ><H2 | |
448 >Return Value</H2 | |
449 ><P | |
450 >The framebuffer surface, or <SPAN | |
451 CLASS="RETURNVALUE" | |
452 >NULL</SPAN | |
181
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453 > if it fails. |
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454 The surface returned is freed by SDL_Quit() and should nt be freed by |
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455 the caller.</P |
0 | 456 ></DIV |
457 ><DIV | |
458 CLASS="REFSECT1" | |
459 ><A | |
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460 NAME="AEN1340" |
0 | 461 ></A |
462 ><H2 | |
463 >See Also</H2 | |
464 ><P | |
465 ><A | |
466 HREF="sdllocksurface.html" | |
467 ><TT | |
468 CLASS="FUNCTION" | |
469 >SDL_LockSurface</TT | |
470 ></A | |
471 >, | |
472 <A | |
473 HREF="sdlsetcolors.html" | |
474 ><TT | |
475 CLASS="FUNCTION" | |
476 >SDL_SetColors</TT | |
477 ></A | |
478 >, | |
479 <A | |
480 HREF="sdlflip.html" | |
481 ><TT | |
482 CLASS="FUNCTION" | |
483 >SDL_Flip</TT | |
484 ></A | |
485 >, | |
486 <A | |
487 HREF="sdlsurface.html" | |
488 ><SPAN | |
489 CLASS="STRUCTNAME" | |
490 >SDL_Surface</SPAN | |
491 ></A | |
492 ></P | |
493 ></DIV | |
494 ><DIV | |
495 CLASS="NAVFOOTER" | |
496 ><HR | |
497 ALIGN="LEFT" | |
498 WIDTH="100%"><TABLE | |
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499 SUMMARY="Footer navigation table" |
0 | 500 WIDTH="100%" |
501 BORDER="0" | |
502 CELLPADDING="0" | |
503 CELLSPACING="0" | |
504 ><TR | |
505 ><TD | |
506 WIDTH="33%" | |
507 ALIGN="left" | |
508 VALIGN="top" | |
509 ><A | |
510 HREF="sdlvideomodeok.html" | |
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511 ACCESSKEY="P" |
0 | 512 >Prev</A |
513 ></TD | |
514 ><TD | |
515 WIDTH="34%" | |
516 ALIGN="center" | |
517 VALIGN="top" | |
518 ><A | |
519 HREF="index.html" | |
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520 ACCESSKEY="H" |
0 | 521 >Home</A |
522 ></TD | |
523 ><TD | |
524 WIDTH="33%" | |
525 ALIGN="right" | |
526 VALIGN="top" | |
527 ><A | |
528 HREF="sdlupdaterect.html" | |
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529 ACCESSKEY="N" |
0 | 530 >Next</A |
531 ></TD | |
532 ></TR | |
533 ><TR | |
534 ><TD | |
535 WIDTH="33%" | |
536 ALIGN="left" | |
537 VALIGN="top" | |
538 >SDL_VideoModeOK</TD | |
539 ><TD | |
540 WIDTH="34%" | |
541 ALIGN="center" | |
542 VALIGN="top" | |
543 ><A | |
544 HREF="video.html" | |
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545 ACCESSKEY="U" |
0 | 546 >Up</A |
547 ></TD | |
548 ><TD | |
549 WIDTH="33%" | |
550 ALIGN="right" | |
551 VALIGN="top" | |
552 >SDL_UpdateRect</TD | |
553 ></TR | |
554 ></TABLE | |
555 ></DIV | |
556 ></BODY | |
557 ></HTML | |
558 > |