Mercurial > sdl-ios-xcode
annotate docs/html/sdlsetcolorkey.html @ 693:6c119628180d
Date: Sat, 16 Aug 2003 16:22:56 +0300
From: "Mike Gorchak"
Subject: Package building for QNX6
I'm just completed the package description file for QNX6 - qpg, it is like a\
.spec files for Linux. Please place SDL.qpg.in file in the root of the proj\
ect, where .spec file is placed. And sdl12qpg.diff - just adding the SDL.qpg\
.in. The same for the SDL_image. I'm planning to add .qpg files creation for\
all SDL* projects.
As for shared library building for QNX6. It is very hard to improve the exis\
ting libtool code to support QNX shared libraries. Much easyiest is to remov\
e libtool.m4 code from the acinclude.m4 for those persons, who building shar\
ed libraries for QNX6. I'm described all what they need to do with .so under\
QNX6 in the README.QNX file. And 90% of people used the precompiled librari\
es, so I think it is not big problem :)
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 23 Aug 2003 23:25:46 +0000 |
| parents | e5bc29de3f0a |
| children | 355632dca928 |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >SDL_SetColorKey</TITLE | |
| 5 ><META | |
| 6 NAME="GENERATOR" | |
|
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7 CONTENT="Modular DocBook HTML Stylesheet Version 1.64 |
| 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_SaveBMP" | |
| 17 HREF="sdlsavebmp.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="SDL_SetAlpha" | |
| 20 HREF="sdlsetalpha.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 | |
| 31 WIDTH="100%" | |
| 32 BORDER="0" | |
| 33 CELLPADDING="0" | |
| 34 CELLSPACING="0" | |
| 35 ><TR | |
| 36 ><TH | |
| 37 COLSPAN="3" | |
| 38 ALIGN="center" | |
| 39 >SDL Library Documentation</TH | |
| 40 ></TR | |
| 41 ><TR | |
| 42 ><TD | |
| 43 WIDTH="10%" | |
| 44 ALIGN="left" | |
| 45 VALIGN="bottom" | |
| 46 ><A | |
| 47 HREF="sdlsavebmp.html" | |
| 48 >Prev</A | |
| 49 ></TD | |
| 50 ><TD | |
| 51 WIDTH="80%" | |
| 52 ALIGN="center" | |
| 53 VALIGN="bottom" | |
| 54 ></TD | |
| 55 ><TD | |
| 56 WIDTH="10%" | |
| 57 ALIGN="right" | |
| 58 VALIGN="bottom" | |
| 59 ><A | |
| 60 HREF="sdlsetalpha.html" | |
| 61 >Next</A | |
| 62 ></TD | |
| 63 ></TR | |
| 64 ></TABLE | |
| 65 ><HR | |
| 66 ALIGN="LEFT" | |
| 67 WIDTH="100%"></DIV | |
| 68 ><H1 | |
| 69 ><A | |
| 70 NAME="SDLSETCOLORKEY" | |
| 71 >SDL_SetColorKey</A | |
| 72 ></H1 | |
| 73 ><DIV | |
| 74 CLASS="REFNAMEDIV" | |
| 75 ><A | |
|
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76 NAME="AEN1661" |
| 0 | 77 ></A |
| 78 ><H2 | |
| 79 >Name</H2 | |
| 80 >SDL_SetColorKey -- Sets the color key (transparent pixel) in a blittable surface and | |
| 81 RLE acceleration.</DIV | |
| 82 ><DIV | |
| 83 CLASS="REFSYNOPSISDIV" | |
| 84 ><A | |
|
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85 NAME="AEN1664" |
| 0 | 86 ></A |
| 87 ><H2 | |
| 88 >Synopsis</H2 | |
| 89 ><DIV | |
| 90 CLASS="FUNCSYNOPSIS" | |
| 91 ><A | |
|
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92 NAME="AEN1665" |
| 0 | 93 ></A |
| 94 ><P | |
| 95 ></P | |
| 96 ><PRE | |
| 97 CLASS="FUNCSYNOPSISINFO" | |
| 98 >#include "SDL.h"</PRE | |
| 99 ><P | |
| 100 ><CODE | |
| 101 ><CODE | |
| 102 CLASS="FUNCDEF" | |
| 103 >int <B | |
| 104 CLASS="FSFUNC" | |
| 105 >SDL_SetColorKey</B | |
| 106 ></CODE | |
| 107 >(SDL_Surface *surface, Uint32 flag, Uint32 key);</CODE | |
| 108 ></P | |
| 109 ><P | |
| 110 ></P | |
| 111 ></DIV | |
| 112 ></DIV | |
| 113 ><DIV | |
| 114 CLASS="REFSECT1" | |
| 115 ><A | |
|
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116 NAME="AEN1671" |
| 0 | 117 ></A |
| 118 ><H2 | |
| 119 >Description</H2 | |
| 120 ><P | |
| 121 > Sets the color key (transparent pixel) in a blittable surface and enables or | |
| 122 disables RLE blit acceleration.</P | |
| 123 ><P | |
| 124 >RLE acceleration can substantially speed up blitting of images with large | |
| 125 horizontal runs of transparent pixels (i.e., pixels that match the | |
| 126 <TT | |
| 127 CLASS="PARAMETER" | |
| 128 ><I | |
| 129 >key</I | |
| 130 ></TT | |
| 131 > value). The <TT | |
| 132 CLASS="PARAMETER" | |
| 133 ><I | |
| 134 >key</I | |
| 135 ></TT | |
| 136 > must be of the same pixel format as the <TT | |
| 137 CLASS="PARAMETER" | |
| 138 ><I | |
| 139 >surface</I | |
| 140 ></TT | |
| 141 >, <A | |
| 142 HREF="sdlmaprgb.html" | |
| 143 ><TT | |
| 144 CLASS="FUNCTION" | |
| 145 >SDL_MapRGB</TT | |
| 146 ></A | |
| 147 > is often useful for obtaining an acceptable value.</P | |
| 148 ><P | |
| 149 >If <TT | |
| 150 CLASS="PARAMETER" | |
| 151 ><I | |
| 152 >flag</I | |
| 153 ></TT | |
| 154 > is <TT | |
| 155 CLASS="LITERAL" | |
| 156 >SDL_SRCCOLORKEY</TT | |
| 157 > then | |
| 158 <TT | |
| 159 CLASS="PARAMETER" | |
| 160 ><I | |
| 161 >key</I | |
| 162 ></TT | |
| 163 > is the transparent pixel value in the source image of a | |
| 164 blit.</P | |
| 165 ><P | |
| 166 >If <TT | |
| 167 CLASS="PARAMETER" | |
| 168 ><I | |
| 169 >flag</I | |
| 170 ></TT | |
| 171 > is OR'd with | |
| 172 <TT | |
| 173 CLASS="LITERAL" | |
| 174 >SDL_RLEACCEL</TT | |
| 175 > then the surface will be draw using RLE | |
| 176 acceleration when drawn with | |
| 177 <A | |
| 178 HREF="sdlblitsurface.html" | |
| 179 >SDL_BlitSurface</A | |
| 180 >. The surface will | |
| 181 actually be encoded for RLE acceleration the first time | |
| 182 <A | |
| 183 HREF="sdlblitsurface.html" | |
| 184 >SDL_BlitSurface</A | |
| 185 > or | |
| 186 <A | |
| 187 HREF="sdldisplayformat.html" | |
| 188 >SDL_DisplayFormat</A | |
| 189 > is called on the | |
| 190 surface.</P | |
| 191 ><P | |
| 192 >If <TT | |
| 193 CLASS="PARAMETER" | |
| 194 ><I | |
| 195 >flag</I | |
| 196 ></TT | |
| 197 > is 0, this function clears | |
| 198 any current color key.</P | |
| 199 ></DIV | |
| 200 ><DIV | |
| 201 CLASS="REFSECT1" | |
| 202 ><A | |
|
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203 NAME="AEN1692" |
| 0 | 204 ></A |
| 205 ><H2 | |
| 206 >Return Value</H2 | |
| 207 ><P | |
| 208 >This function returns <SPAN | |
| 209 CLASS="RETURNVALUE" | |
| 210 >0</SPAN | |
| 211 >, or | |
| 212 <SPAN | |
| 213 CLASS="RETURNVALUE" | |
| 214 >-1</SPAN | |
| 215 > if there was an error.</P | |
| 216 ></DIV | |
| 217 ><DIV | |
| 218 CLASS="REFSECT1" | |
| 219 ><A | |
|
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220 NAME="AEN1697" |
| 0 | 221 ></A |
| 222 ><H2 | |
| 223 >See Also</H2 | |
| 224 ><P | |
| 225 ><A | |
| 226 HREF="sdlblitsurface.html" | |
| 227 ><TT | |
| 228 CLASS="FUNCTION" | |
| 229 >SDL_BlitSurface</TT | |
| 230 ></A | |
| 231 >, | |
| 232 <A | |
| 233 HREF="sdldisplayformat.html" | |
| 234 ><TT | |
| 235 CLASS="FUNCTION" | |
| 236 >SDL_DisplayFormat</TT | |
| 237 ></A | |
| 238 >, | |
| 239 <A | |
| 240 HREF="sdlmaprgb.html" | |
| 241 ><TT | |
| 242 CLASS="FUNCTION" | |
| 243 >SDL_MapRGB</TT | |
| 244 ></A | |
| 245 >, | |
| 246 <A | |
| 247 HREF="sdlsetalpha.html" | |
| 248 ><TT | |
| 249 CLASS="FUNCTION" | |
| 250 >SDL_SetAlpha</TT | |
| 251 ></A | |
| 252 ></P | |
| 253 ></DIV | |
| 254 ><DIV | |
| 255 CLASS="NAVFOOTER" | |
| 256 ><HR | |
| 257 ALIGN="LEFT" | |
| 258 WIDTH="100%"><TABLE | |
| 259 WIDTH="100%" | |
| 260 BORDER="0" | |
| 261 CELLPADDING="0" | |
| 262 CELLSPACING="0" | |
| 263 ><TR | |
| 264 ><TD | |
| 265 WIDTH="33%" | |
| 266 ALIGN="left" | |
| 267 VALIGN="top" | |
| 268 ><A | |
| 269 HREF="sdlsavebmp.html" | |
| 270 >Prev</A | |
| 271 ></TD | |
| 272 ><TD | |
| 273 WIDTH="34%" | |
| 274 ALIGN="center" | |
| 275 VALIGN="top" | |
| 276 ><A | |
| 277 HREF="index.html" | |
| 278 >Home</A | |
| 279 ></TD | |
| 280 ><TD | |
| 281 WIDTH="33%" | |
| 282 ALIGN="right" | |
| 283 VALIGN="top" | |
| 284 ><A | |
| 285 HREF="sdlsetalpha.html" | |
| 286 >Next</A | |
| 287 ></TD | |
| 288 ></TR | |
| 289 ><TR | |
| 290 ><TD | |
| 291 WIDTH="33%" | |
| 292 ALIGN="left" | |
| 293 VALIGN="top" | |
| 294 >SDL_SaveBMP</TD | |
| 295 ><TD | |
| 296 WIDTH="34%" | |
| 297 ALIGN="center" | |
| 298 VALIGN="top" | |
| 299 ><A | |
| 300 HREF="video.html" | |
| 301 >Up</A | |
| 302 ></TD | |
| 303 ><TD | |
| 304 WIDTH="33%" | |
| 305 ALIGN="right" | |
| 306 VALIGN="top" | |
| 307 >SDL_SetAlpha</TD | |
| 308 ></TR | |
| 309 ></TABLE | |
| 310 ></DIV | |
| 311 ></BODY | |
| 312 ></HTML | |
| 313 > |