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| 5131 | clevermous | 1 | |
| 2 | > |
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| 3 | > |
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| 4 | >SDL_SetColors |
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| 5 | > |
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| 6 | NAME="GENERATOR" |
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| 7 | CONTENT="Modular DocBook HTML Stylesheet Version 1.64 |
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| 8 | "> |
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| 9 | REL="HOME" |
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| 10 | TITLE="SDL Library Documentation" |
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| 11 | HREF="index.html"> |
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| 12 | REL="UP" |
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| 13 | TITLE="Video" |
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| 14 | HREF="video.html"> |
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| 15 | REL="PREVIOUS" |
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| 16 | TITLE="SDL_Flip" |
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| 17 | HREF="sdlflip.html"> |
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| 18 | REL="NEXT" |
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| 19 | TITLE="SDL_SetPalette" |
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| 20 | HREF="sdlsetpalette.html"> |
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| 21 | > |
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| 22 | CLASS="REFENTRY" |
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| 23 | BGCOLOR="#FFF8DC" |
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| 24 | TEXT="#000000" |
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| 25 | LINK="#0000ee" |
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| 26 | VLINK="#551a8b" |
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| 27 | ALINK="#ff0000" |
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| 28 | > |
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| 29 | CLASS="NAVHEADER" |
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| 30 | > |
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| 31 | WIDTH="100%" |
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| 32 | BORDER="0" |
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| 33 | CELLPADDING="0" |
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| 34 | CELLSPACING="0" |
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| 35 | > |
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| 36 | > |
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| 37 | COLSPAN="3" |
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| 38 | ALIGN="center" |
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| 39 | >SDL Library Documentation |
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| 40 | > |
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| 41 | > |
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| 42 | > |
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| 43 | WIDTH="10%" |
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| 44 | ALIGN="left" |
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| 45 | VALIGN="bottom" |
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| 46 | > |
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| 47 | HREF="sdlflip.html" |
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| 48 | >Prev |
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| 49 | > |
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| 50 | > |
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| 51 | WIDTH="80%" |
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| 52 | ALIGN="center" |
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| 53 | VALIGN="bottom" |
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| 54 | > |
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| 55 | > |
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| 56 | WIDTH="10%" |
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| 57 | ALIGN="right" |
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| 58 | VALIGN="bottom" |
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| 59 | > |
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| 60 | HREF="sdlsetpalette.html" |
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| 61 | >Next |
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| 62 | > |
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| 63 | > |
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| 64 | > |
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| 65 | > |
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| 66 | ALIGN="LEFT" |
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| 67 | WIDTH="100%"> |
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| 68 | > |
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| 69 | > |
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| 70 | NAME="SDLSETCOLORS" |
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| 71 | >SDL_SetColors |
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| 72 | > |
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| 73 | > |
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| 74 | CLASS="REFNAMEDIV" |
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| 75 | > |
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| 76 | NAME="AEN1047" |
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| 77 | > |
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| 78 | > |
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| 79 | >Name |
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| 80 | >SDL_SetColors -- Sets a portion of the colormap for the given 8-bit surface. |
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| 81 | > |
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| 82 | CLASS="REFSYNOPSISDIV" |
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| 83 | > |
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| 84 | NAME="AEN1050" |
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| 85 | > |
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| 86 | > |
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| 87 | >Synopsis |
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| 88 | > |
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| 89 | CLASS="FUNCSYNOPSIS" |
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| 90 | > |
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| 91 | NAME="AEN1051" |
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| 92 | > |
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| 93 | > |
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| 94 | > |
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| 95 | > |
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| 96 | CLASS="FUNCSYNOPSISINFO" |
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| 97 | >#include "SDL.h" |
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| 98 | > |
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| 99 | > |
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| 100 | > |
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| 101 | CLASS="FUNCDEF" |
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| 102 | >int |
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| 103 | CLASS="FSFUNC" |
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| 104 | >SDL_SetColors |
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| 105 | > |
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| 106 | >(SDL_Surface *surface, SDL_Color *colors, int firstcolor, int ncolors); |
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| 107 | > |
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| 108 | > |
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| 109 | > |
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| 110 | > |
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| 111 | > |
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| 112 | > |
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| 113 | CLASS="REFSECT1" |
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| 114 | > |
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| 115 | NAME="AEN1057" |
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| 116 | > |
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| 117 | > |
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| 118 | >Description |
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| 119 | > |
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| 120 | >Sets a portion of the colormap for the given 8-bit surface. |
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| 121 | > |
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| 122 | >When |
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| 123 | CLASS="PARAMETER" |
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| 124 | > |
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| 125 | >surface |
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| 126 | > |
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| 127 | > is the surface associated with the current |
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| 128 | display, the display colormap will be updated with the requested colors. If |
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| 129 | |||
| 130 | CLASS="LITERAL" |
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| 131 | >SDL_HWPALETTE |
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| 132 | > was set in |
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| 133 | HREF="sdlsetvideomode.html" |
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| 134 | >SDL_SetVideoMode |
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| 135 | > flags, |
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| 136 | |||
| 137 | CLASS="FUNCTION" |
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| 138 | >SDL_SetColors |
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| 139 | > will always return |
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| 140 | CLASS="RETURNVALUE" |
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| 141 | >1 |
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| 142 | >, |
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| 143 | and the palette is guaranteed to be set the way you desire, even if the window |
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| 144 | colormap has to be warped or run under emulation. |
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| 145 | > |
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| 146 | >The color components of a |
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| 147 | |||
| 148 | HREF="sdlcolor.html" |
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| 149 | > |
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| 150 | CLASS="STRUCTNAME" |
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| 151 | >SDL_Color |
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| 152 | > |
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| 153 | > |
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| 154 | structure are 8-bits in size, giving you a total of 256 |
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| 155 | >3 |
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| 156 | > |
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| 157 | =16777216 colors. |
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| 158 | > |
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| 159 | >Palettized (8-bit) screen surfaces with the |
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| 160 | CLASS="LITERAL" |
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| 161 | >SDL_HWPALETTE |
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| 162 | > |
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| 163 | flag have two palettes, a logical palette that is used for mapping blits |
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| 164 | to/from the surface and a physical palette (that determines how the |
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| 165 | hardware will map the colors to the display). |
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| 166 | CLASS="FUNCTION" |
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| 167 | >SDL_SetColors |
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| 168 | > |
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| 169 | modifies both palettes (if present), and is equivalent to calling |
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| 170 | |||
| 171 | HREF="sdlsetpalette.html" |
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| 172 | >SDL_SetPalette |
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| 173 | > with the |
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| 174 | |||
| 175 | CLASS="PARAMETER" |
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| 176 | > |
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| 177 | >flags |
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| 178 | > |
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| 179 | > set to |
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| 180 | |||
| 181 | CLASS="LITERAL" |
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| 182 | >(SDL_LOGPAL | SDL_PHYSPAL) |
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| 183 | >. |
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| 184 | > |
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| 185 | > |
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| 186 | CLASS="REFSECT1" |
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| 187 | > |
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| 188 | NAME="AEN1076" |
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| 189 | > |
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| 190 | > |
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| 191 | >Return Value |
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| 192 | > |
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| 193 | >If |
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| 194 | CLASS="PARAMETER" |
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| 195 | > |
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| 196 | >surface |
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| 197 | > |
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| 198 | > is not a palettized surface, this function |
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| 199 | does nothing, returning |
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| 200 | CLASS="RETURNVALUE" |
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| 201 | >0 |
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| 202 | >. If all of the colors were set |
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| 203 | as passed to |
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| 204 | CLASS="FUNCTION" |
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| 205 | >SDL_SetColors |
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| 206 | >, it will return |
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| 207 | |||
| 208 | CLASS="RETURNVALUE" |
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| 209 | >1 |
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| 210 | >. If not all the color entries were set exactly as |
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| 211 | given, it will return |
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| 212 | CLASS="RETURNVALUE" |
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| 213 | >0 |
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| 214 | >, and you should look at the |
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| 215 | surface palette to determine the actual color palette. |
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| 216 | > |
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| 217 | > |
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| 218 | CLASS="REFSECT1" |
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| 219 | > |
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| 220 | NAME="AEN1084" |
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| 221 | > |
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| 222 | > |
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| 223 | >Example |
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| 224 | > |
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| 225 | CLASS="PROGRAMLISTING" |
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| 226 | >/* Create a display surface with a grayscale palette */ |
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| 227 | SDL_Surface *screen; |
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| 228 | SDL_Color colors[256]; |
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| 229 | int i; |
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| 230 | . |
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| 231 | . |
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| 232 | . |
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| 233 | /* Fill colors with color information */ |
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| 234 | for(i=0;i<256;i++){ |
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| 235 | colors[i].r=i; |
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| 236 | colors[i].g=i; |
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| 237 | colors[i].b=i; |
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| 238 | } |
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| 239 | |||
| 240 | /* Create display */ |
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| 241 | screen=SDL_SetVideoMode(640, 480, 8, SDL_HWPALETTE); |
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| 242 | if(!screen){ |
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| 243 | printf("Couldn't set video mode: %s\n", SDL_GetError()); |
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| 244 | exit(-1); |
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| 245 | } |
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| 246 | |||
| 247 | /* Set palette */ |
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| 248 | SDL_SetColors(screen, colors, 0, 256); |
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| 249 | . |
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| 250 | . |
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| 251 | . |
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| 252 | . |
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| 253 | > |
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| 254 | > |
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| 255 | CLASS="REFSECT1" |
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| 256 | > |
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| 257 | NAME="AEN1087" |
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| 258 | > |
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| 259 | > |
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| 260 | >See Also |
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| 261 | > |
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| 262 | > |
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| 263 | HREF="sdlcolor.html" |
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| 264 | > |
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| 265 | CLASS="STRUCTNAME" |
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| 266 | >SDL_Color |
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| 267 | > |
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| 268 | > |
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| 269 | |||
| 270 | HREF="sdlsurface.html" |
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| 271 | > |
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| 272 | CLASS="STRUCTNAME" |
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| 273 | >SDL_Surface |
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| 274 | > |
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| 275 | >, |
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| 276 | |||
| 277 | HREF="sdlsetpalette.html" |
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| 278 | > |
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| 279 | CLASS="FUNCTION" |
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| 280 | >SDL_SetPalette |
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| 281 | > |
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| 282 | >, |
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| 283 | |||
| 284 | HREF="sdlsetvideomode.html" |
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| 285 | > |
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| 286 | CLASS="FUNCTION" |
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| 287 | >SDL_SetVideoMode |
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| 288 | > |
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| 289 | > |
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| 290 | > |
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| 291 | > |
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| 292 | CLASS="NAVFOOTER" |
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| 293 | > |
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| 294 | ALIGN="LEFT" |
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| 295 | WIDTH="100%"> |
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| 296 | WIDTH="100%" |
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| 297 | BORDER="0" |
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| 298 | CELLPADDING="0" |
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| 299 | CELLSPACING="0" |
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| 300 | > |
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| 301 | > |
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| 302 | WIDTH="33%" |
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| 303 | ALIGN="left" |
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| 304 | VALIGN="top" |
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| 305 | > |
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| 306 | HREF="sdlflip.html" |
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| 307 | >Prev |
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| 308 | > |
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| 309 | > |
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| 310 | WIDTH="34%" |
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| 311 | ALIGN="center" |
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| 312 | VALIGN="top" |
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| 313 | > |
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| 314 | HREF="index.html" |
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| 315 | >Home |
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| 316 | > |
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| 317 | > |
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| 318 | WIDTH="33%" |
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| 319 | ALIGN="right" |
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| 320 | VALIGN="top" |
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| 321 | > |
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| 322 | HREF="sdlsetpalette.html" |
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| 323 | >Next |
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| 324 | > |
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| 325 | > |
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| 326 | > |
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| 327 | > |
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| 328 | WIDTH="33%" |
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| 329 | ALIGN="left" |
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| 330 | VALIGN="top" |
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| 331 | >SDL_Flip |
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| 332 | > |
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| 333 | WIDTH="34%" |
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| 334 | ALIGN="center" |
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| 335 | VALIGN="top" |
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| 336 | > |
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| 337 | HREF="video.html" |
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| 338 | >Up |
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| 339 | > |
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| 340 | > |
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| 341 | WIDTH="33%" |
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| 342 | ALIGN="right" |
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| 343 | VALIGN="top" |
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| 344 | >SDL_SetPalette |
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| 345 | > |
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| 346 | > |
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| 347 | > |
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| 348 | > |
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| 349 | > |
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| 350 | > |