1 <HTML 2 ><HEAD 3 ><TITLE 4 >SDL_VideoModeOK</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_ListModes" 17 HREF="sdllistmodes.html"><LINK 18 REL="NEXT" 19 TITLE="SDL_SetVideoMode" 20 HREF="sdlsetvideomode.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="sdllistmodes.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="sdlsetvideomode.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="SDLVIDEOMODEOK" 74 ></A 75 >SDL_VideoModeOK</H1 76 ><DIV 77 CLASS="REFNAMEDIV" 78 ><A 79 NAME="AEN1202" 80 ></A 81 ><H2 82 >Name</H2 83 >SDL_VideoModeOK -- Check to see if a particular video mode is supported.</DIV 84 ><DIV 85 CLASS="REFSYNOPSISDIV" 86 ><A 87 NAME="AEN1205" 88 ></A 89 ><H2 90 >Synopsis</H2 91 ><DIV 92 CLASS="FUNCSYNOPSIS" 93 ><A 94 NAME="AEN1206" 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_VideoModeOK</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 118 NAME="AEN1212" 119 ></A 120 ><H2 121 >Description</H2 122 ><P 123 ><TT 124 CLASS="FUNCTION" 125 >SDL_VideoModeOK</TT 126 > returns <SPAN 127 CLASS="RETURNVALUE" 128 >0</SPAN 129 > 130 if the requested mode is not supported under any bit depth, or returns the 131 bits-per-pixel of the closest available mode with the given width, height and requested <A 132 HREF="sdlsurface.html" 133 >surface</A 134 > flags (see <A 135 HREF="sdlsetvideomode.html" 136 ><TT 137 CLASS="FUNCTION" 138 >SDL_SetVideoMode</TT 139 ></A 140 >).</P 141 ><P 142 >The bits-per-pixel value returned is only a suggested mode. You can usually request and bpp you want when <A 143 HREF="sdlsetvideomode.html" 144 >setting</A 145 > the video mode and SDL will emulate that color depth with a shadow video surface.</P 146 ><P 147 >The arguments to <TT 148 CLASS="FUNCTION" 149 >SDL_VideoModeOK</TT 150 > are the same ones you 151 would pass to <A 152 HREF="sdlsetvideomode.html" 153 >SDL_SetVideoMode</A 154 ></P 155 ></DIV 156 ><DIV 157 CLASS="REFSECT1" 158 ><A 159 NAME="AEN1225" 160 ></A 161 ><H2 162 >Example</H2 163 ><PRE 164 CLASS="PROGRAMLISTING" 165 >SDL_Surface *screen; 166 Uint32 bpp; 167 . 168 . 169 . 170 printf("Checking mode 640x480@16bpp.\n"); 171 bpp=SDL_VideoModeOK(640, 480, 16, SDL_HWSURFACE); 172 173 if(!bpp){ 174 printf("Mode not available.\n"); 175 exit(-1); 176 } 177 178 printf("SDL Recommends 640x480@%dbpp.\n", bpp); 179 screen=SDL_SetVideoMode(640, 480, bpp, SDL_HWSURFACE); 180 . 181 .</PRE 182 ></DIV 183 ><DIV 184 CLASS="REFSECT1" 185 ><A 186 NAME="AEN1228" 187 ></A 188 ><H2 189 >See Also</H2 190 ><P 191 ><A 192 HREF="sdlsetvideomode.html" 193 ><TT 194 CLASS="FUNCTION" 195 >SDL_SetVideoMode</TT 196 ></A 197 >, 198 <A 199 HREF="sdlgetvideoinfo.html" 200 ><TT 201 CLASS="FUNCTION" 202 >SDL_GetVideoInfo</TT 203 ></A 204 ></P 205 ></DIV 206 ><DIV 207 CLASS="NAVFOOTER" 208 ><HR 209 ALIGN="LEFT" 210 WIDTH="100%"><TABLE 211 SUMMARY="Footer navigation table" 212 WIDTH="100%" 213 BORDER="0" 214 CELLPADDING="0" 215 CELLSPACING="0" 216 ><TR 217 ><TD 218 WIDTH="33%" 219 ALIGN="left" 220 VALIGN="top" 221 ><A 222 HREF="sdllistmodes.html" 223 ACCESSKEY="P" 224 >Prev</A 225 ></TD 226 ><TD 227 WIDTH="34%" 228 ALIGN="center" 229 VALIGN="top" 230 ><A 231 HREF="index.html" 232 ACCESSKEY="H" 233 >Home</A 234 ></TD 235 ><TD 236 WIDTH="33%" 237 ALIGN="right" 238 VALIGN="top" 239 ><A 240 HREF="sdlsetvideomode.html" 241 ACCESSKEY="N" 242 >Next</A 243 ></TD 244 ></TR 245 ><TR 246 ><TD 247 WIDTH="33%" 248 ALIGN="left" 249 VALIGN="top" 250 >SDL_ListModes</TD 251 ><TD 252 WIDTH="34%" 253 ALIGN="center" 254 VALIGN="top" 255 ><A 256 HREF="video.html" 257 ACCESSKEY="U" 258 >Up</A 259 ></TD 260 ><TD 261 WIDTH="33%" 262 ALIGN="right" 263 VALIGN="top" 264 >SDL_SetVideoMode</TD 265 ></TR 266 ></TABLE 267 ></DIV 268 ></BODY 269 ></HTML 270 >