Mercurial > sdl-ios-xcode
annotate docs/html/sdlpalette.html @ 1614:6162b8d921ce
Date: Wed, 29 Mar 2006 17:26:55 +0200 CEST
From: "Fran���is Revol"
Subject: [SDL] BeOS port fix: PrintScreen key crashing
It seems the latest SDL crashes when someone hits the PrtScrn key in
ZETA (BeOS R6), somewhere it gets a negative value as key code (or a
big unsigned maybe ?), and uses it as an index in the keysym table...
I'll investigate the cause for the negative value, but it's always
better to check for bounds correctly when indexing a table. The
attached diff fixes it.
Fran���is Revol
--
Software Architect
yellowTAB GmbH
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Fri, 31 Mar 2006 06:16:20 +0000 |
| parents | 355632dca928 |
| children |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >SDL_Palette</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_Color" | |
| 17 HREF="sdlcolor.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="SDL_PixelFormat" | |
| 20 HREF="sdlpixelformat.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="sdlcolor.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="sdlpixelformat.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="SDLPALETTE" | |
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74 ></A |
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75 >SDL_Palette</H1 |
| 0 | 76 ><DIV |
| 77 CLASS="REFNAMEDIV" | |
| 78 ><A | |
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79 NAME="AEN3129" |
| 0 | 80 ></A |
| 81 ><H2 | |
| 82 >Name</H2 | |
| 83 >SDL_Palette -- Color palette for 8-bit pixel formats</DIV | |
| 84 ><DIV | |
| 85 CLASS="REFSECT1" | |
| 86 ><A | |
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87 NAME="AEN3132" |
| 0 | 88 ></A |
| 89 ><H2 | |
| 90 >Structure Definition</H2 | |
| 91 ><PRE | |
| 92 CLASS="PROGRAMLISTING" | |
| 93 >typedef struct{ | |
| 94 int ncolors; | |
| 95 SDL_Color *colors; | |
| 96 } SDL_Palette;</PRE | |
| 97 ></DIV | |
| 98 ><DIV | |
| 99 CLASS="REFSECT1" | |
| 100 ><A | |
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101 NAME="AEN3135" |
| 0 | 102 ></A |
| 103 ><H2 | |
| 104 >Structure Data</H2 | |
| 105 ><DIV | |
| 106 CLASS="INFORMALTABLE" | |
| 107 ><A | |
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108 NAME="AEN3137" |
| 0 | 109 ></A |
| 110 ><P | |
| 111 ></P | |
| 112 ><TABLE | |
| 113 BORDER="0" | |
| 114 CLASS="CALSTABLE" | |
| 115 ><TBODY | |
| 116 ><TR | |
| 117 ><TD | |
| 118 ALIGN="LEFT" | |
| 119 VALIGN="TOP" | |
| 120 ><TT | |
| 121 CLASS="STRUCTFIELD" | |
| 122 ><I | |
| 123 >ncolors</I | |
| 124 ></TT | |
| 125 ></TD | |
| 126 ><TD | |
| 127 ALIGN="LEFT" | |
| 128 VALIGN="TOP" | |
| 129 >Number of colors used in this palette</TD | |
| 130 ></TR | |
| 131 ><TR | |
| 132 ><TD | |
| 133 ALIGN="LEFT" | |
| 134 VALIGN="TOP" | |
| 135 ><TT | |
| 136 CLASS="STRUCTFIELD" | |
| 137 ><I | |
| 138 >colors</I | |
| 139 ></TT | |
| 140 ></TD | |
| 141 ><TD | |
| 142 ALIGN="LEFT" | |
| 143 VALIGN="TOP" | |
| 144 >Pointer to <A | |
| 145 HREF="sdlcolor.html" | |
| 146 ><SPAN | |
| 147 CLASS="STRUCTNAME" | |
| 148 >SDL_Color</SPAN | |
| 149 ></A | |
| 150 > structures that make up the palette.</TD | |
| 151 ></TR | |
| 152 ></TBODY | |
| 153 ></TABLE | |
| 154 ><P | |
| 155 ></P | |
| 156 ></DIV | |
| 157 ></DIV | |
| 158 ><DIV | |
| 159 CLASS="REFSECT1" | |
| 160 ><A | |
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parents:
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161 NAME="AEN3150" |
| 0 | 162 ></A |
| 163 ><H2 | |
| 164 >Description</H2 | |
| 165 ><P | |
| 166 >Each pixel in an 8-bit surface is an index into the <TT | |
| 167 CLASS="STRUCTFIELD" | |
| 168 ><I | |
| 169 >colors</I | |
| 170 ></TT | |
| 171 > field of the <SPAN | |
| 172 CLASS="STRUCTNAME" | |
| 173 >SDL_Palette</SPAN | |
| 174 > structure store in <A | |
| 175 HREF="sdlpixelformat.html" | |
| 176 ><SPAN | |
| 177 CLASS="STRUCTNAME" | |
| 178 >SDL_PixelFormat</SPAN | |
| 179 ></A | |
| 180 >. A <SPAN | |
| 181 CLASS="STRUCTNAME" | |
| 182 >SDL_Palette</SPAN | |
| 183 > should never need to be created manually. It is automatically created when SDL allocates a <SPAN | |
| 184 CLASS="STRUCTNAME" | |
| 185 >SDL_PixelFormat</SPAN | |
| 186 > for a surface. The colors values of a <A | |
| 187 HREF="sdlsurface.html" | |
| 188 ><SPAN | |
| 189 CLASS="STRUCTNAME" | |
| 190 >SDL_Surface</SPAN | |
| 191 ></A | |
| 192 >s palette can be set with the <A | |
| 193 HREF="sdlsetcolors.html" | |
| 194 ><TT | |
| 195 CLASS="FUNCTION" | |
| 196 >SDL_SetColors</TT | |
| 197 ></A | |
| 198 >.</P | |
| 199 ></DIV | |
| 200 ><DIV | |
| 201 CLASS="REFSECT1" | |
| 202 ><A | |
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803
355632dca928
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parents:
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diff
changeset
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203 NAME="AEN3163" |
| 0 | 204 ></A |
| 205 ><H2 | |
| 206 >See Also</H2 | |
| 207 ><P | |
| 208 ><A | |
| 209 HREF="sdlcolor.html" | |
| 210 ><SPAN | |
| 211 CLASS="STRUCTNAME" | |
| 212 >SDL_Color</SPAN | |
| 213 ></A | |
| 214 >, | |
| 215 <A | |
| 216 HREF="sdlsurface.html" | |
| 217 ><SPAN | |
| 218 CLASS="STRUCTNAME" | |
| 219 >SDL_Surface</SPAN | |
| 220 ></A | |
| 221 >, | |
| 222 <A | |
| 223 HREF="sdlsetcolors.html" | |
| 224 ><TT | |
| 225 CLASS="FUNCTION" | |
| 226 >SDL_SetColors</TT | |
| 227 ></A | |
| 228 > | |
| 229 <A | |
| 230 HREF="sdlsetpalette.html" | |
| 231 ><TT | |
| 232 CLASS="FUNCTION" | |
| 233 >SDL_SetPalette</TT | |
| 234 ></A | |
| 235 ></P | |
| 236 ></DIV | |
| 237 ><DIV | |
| 238 CLASS="NAVFOOTER" | |
| 239 ><HR | |
| 240 ALIGN="LEFT" | |
| 241 WIDTH="100%"><TABLE | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
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242 SUMMARY="Footer navigation table" |
| 0 | 243 WIDTH="100%" |
| 244 BORDER="0" | |
| 245 CELLPADDING="0" | |
| 246 CELLSPACING="0" | |
| 247 ><TR | |
| 248 ><TD | |
| 249 WIDTH="33%" | |
| 250 ALIGN="left" | |
| 251 VALIGN="top" | |
| 252 ><A | |
| 253 HREF="sdlcolor.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
254 ACCESSKEY="P" |
| 0 | 255 >Prev</A |
| 256 ></TD | |
| 257 ><TD | |
| 258 WIDTH="34%" | |
| 259 ALIGN="center" | |
| 260 VALIGN="top" | |
| 261 ><A | |
| 262 HREF="index.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
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263 ACCESSKEY="H" |
| 0 | 264 >Home</A |
| 265 ></TD | |
| 266 ><TD | |
| 267 WIDTH="33%" | |
| 268 ALIGN="right" | |
| 269 VALIGN="top" | |
| 270 ><A | |
| 271 HREF="sdlpixelformat.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
changeset
|
272 ACCESSKEY="N" |
| 0 | 273 >Next</A |
| 274 ></TD | |
| 275 ></TR | |
| 276 ><TR | |
| 277 ><TD | |
| 278 WIDTH="33%" | |
| 279 ALIGN="left" | |
| 280 VALIGN="top" | |
| 281 >SDL_Color</TD | |
| 282 ><TD | |
| 283 WIDTH="34%" | |
| 284 ALIGN="center" | |
| 285 VALIGN="top" | |
| 286 ><A | |
| 287 HREF="video.html" | |
|
803
355632dca928
Updated SDL HTML documentation
Sam Lantinga <slouken@libsdl.org>
parents:
181
diff
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288 ACCESSKEY="U" |
| 0 | 289 >Up</A |
| 290 ></TD | |
| 291 ><TD | |
| 292 WIDTH="33%" | |
| 293 ALIGN="right" | |
| 294 VALIGN="top" | |
| 295 >SDL_PixelFormat</TD | |
| 296 ></TR | |
| 297 ></TABLE | |
| 298 ></DIV | |
| 299 ></BODY | |
| 300 ></HTML | |
| 301 > |