1 <HTML 2 ><HEAD 3 ><TITLE 4 >SDL_GL_GetAttribute</TITLE 5 ><META 6 NAME="GENERATOR" 7 CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ 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_GL_GetProcAddress" 17 HREF="sdlglgetprocaddress.html"><LINK 18 REL="NEXT" 19 TITLE="SDL_GL_SetAttribute" 20 HREF="sdlglsetattribute.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 SUMMARY="Header navigation table" 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="sdlglgetprocaddress.html" 49 ACCESSKEY="P" 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="sdlglsetattribute.html" 63 ACCESSKEY="N" 64 >Next</A 65 ></TD 66 ></TR 67 ></TABLE 68 ><HR 69 ALIGN="LEFT" 70 WIDTH="100%"></DIV 71 ><H1 72 ><A 73 NAME="SDLGLGETATTRIBUTE" 74 ></A 75 >SDL_GL_GetAttribute</H1 76 ><DIV 77 CLASS="REFNAMEDIV" 78 ><A 79 NAME="AEN2708" 80 ></A 81 ><H2 82 >Name</H2 83 >SDL_GL_GetAttribute -- Get the value of a special SDL/OpenGL attribute</DIV 84 ><DIV 85 CLASS="REFSYNOPSISDIV" 86 ><A 87 NAME="AEN2711" 88 ></A 89 ><H2 90 >Synopsis</H2 91 ><DIV 92 CLASS="FUNCSYNOPSIS" 93 ><A 94 NAME="AEN2712" 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 >int <B 106 CLASS="FSFUNC" 107 >SDL_GL_GetAttribute</B 108 ></CODE 109 >(SDLGLattr attr, int *value);</CODE 110 ></P 111 ><P 112 ></P 113 ></DIV 114 ></DIV 115 ><DIV 116 CLASS="REFSECT1" 117 ><A 118 NAME="AEN2718" 119 ></A 120 ><H2 121 >Description</H2 122 ><P 123 >Places the value of the SDL/OpenGL <A 124 HREF="sdlglattr.html" 125 >attribute</A 126 > <TT 127 CLASS="PARAMETER" 128 ><I 129 >attr</I 130 ></TT 131 > into <TT 132 CLASS="PARAMETER" 133 ><I 134 >value</I 135 ></TT 136 >. This is useful after a call to <A 137 HREF="sdlsetvideomode.html" 138 ><TT 139 CLASS="FUNCTION" 140 >SDL_SetVideoMode</TT 141 ></A 142 > to check whether your attributes have been <A 143 HREF="sdlglsetattribute.html" 144 >set</A 145 > as you expected.</P 146 ></DIV 147 ><DIV 148 CLASS="REFSECT1" 149 ><A 150 NAME="AEN2727" 151 ></A 152 ><H2 153 >Return Value</H2 154 ><P 155 >Returns <SPAN 156 CLASS="RETURNVALUE" 157 >0</SPAN 158 > on success, or <SPAN 159 CLASS="RETURNVALUE" 160 >-1</SPAN 161 > on an error.</P 162 ></DIV 163 ><DIV 164 CLASS="REFSECT1" 165 ><A 166 NAME="AEN2732" 167 ></A 168 ><H2 169 >See Also</H2 170 ><P 171 ><A 172 HREF="sdlglsetattribute.html" 173 ><TT 174 CLASS="FUNCTION" 175 >SDL_GL_SetAttribute</TT 176 ></A 177 >, 178 <A 179 HREF="sdlglattr.html" 180 >GL Attributes</A 181 ></P 182 ></DIV 183 ><DIV 184 CLASS="NAVFOOTER" 185 ><HR 186 ALIGN="LEFT" 187 WIDTH="100%"><TABLE 188 SUMMARY="Footer navigation table" 189 WIDTH="100%" 190 BORDER="0" 191 CELLPADDING="0" 192 CELLSPACING="0" 193 ><TR 194 ><TD 195 WIDTH="33%" 196 ALIGN="left" 197 VALIGN="top" 198 ><A 199 HREF="sdlglgetprocaddress.html" 200 ACCESSKEY="P" 201 >Prev</A 202 ></TD 203 ><TD 204 WIDTH="34%" 205 ALIGN="center" 206 VALIGN="top" 207 ><A 208 HREF="index.html" 209 ACCESSKEY="H" 210 >Home</A 211 ></TD 212 ><TD 213 WIDTH="33%" 214 ALIGN="right" 215 VALIGN="top" 216 ><A 217 HREF="sdlglsetattribute.html" 218 ACCESSKEY="N" 219 >Next</A 220 ></TD 221 ></TR 222 ><TR 223 ><TD 224 WIDTH="33%" 225 ALIGN="left" 226 VALIGN="top" 227 >SDL_GL_GetProcAddress</TD 228 ><TD 229 WIDTH="34%" 230 ALIGN="center" 231 VALIGN="top" 232 ><A 233 HREF="video.html" 234 ACCESSKEY="U" 235 >Up</A 236 ></TD 237 ><TD 238 WIDTH="33%" 239 ALIGN="right" 240 VALIGN="top" 241 >SDL_GL_SetAttribute</TD 242 ></TR 243 ></TABLE 244 ></DIV 245 ></BODY 246 ></HTML 247 >