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  71 ><H1
  72 ><A
  73 NAME="SDLLOCKYUVOVERLAY"
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  75 >SDL_LockYUVOverlay</H1
  76 ><DIV
  77 CLASS="REFNAMEDIV"
  78 ><A
  79 NAME="AEN2844"
  80 ></A
  81 ><H2
  82 >Name</H2
  83 >SDL_LockYUVOverlay&nbsp;--&nbsp;Lock an overlay</DIV
  84 ><DIV
  85 CLASS="REFSYNOPSISDIV"
  86 ><A
  87 NAME="AEN2847"
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  89 ><H2
  90 >Synopsis</H2
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  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_LockYUVOverlay</B
 108 ></CODE
 109 >(SDL_Overlay *overlay);</CODE
 110 ></P
 111 ><P
 112 ></P
 113 ></DIV
 114 ></DIV
 115 ><DIV
 116 CLASS="REFSECT1"
 117 ><A
 118 NAME="AEN2854"
 119 ></A
 120 ><H2
 121 >Description</H2
 122 ><P
 123 >Much the same as <A
 124 HREF="sdllocksurface.html"
 125 ><TT
 126 CLASS="FUNCTION"
 127 >SDL_LockSurface</TT
 128 ></A
 129 >, <TT
 130 CLASS="FUNCTION"
 131 >SDL_LockYUVOverlay</TT
 132 > locks the <A
 133 HREF="sdloverlay.html"
 134 ><TT
 135 CLASS="PARAMETER"
 136 ><I
 137 >overlay</I
 138 ></TT
 139 ></A
 140 > for direct access to pixel data.</P
 141 ></DIV
 142 ><DIV
 143 CLASS="REFSECT1"
 144 ><A
 145 NAME="AEN2862"
 146 ></A
 147 ><H2
 148 >Return Value</H2
 149 ><P
 150 >Returns <SPAN
 151 CLASS="RETURNVALUE"
 152 >0</SPAN
 153 > on success, or <SPAN
 154 CLASS="RETURNVALUE"
 155 >-1</SPAN
 156 > on an error.</P
 157 ></DIV
 158 ><DIV
 159 CLASS="REFSECT1"
 160 ><A
 161 NAME="AEN2867"
 162 ></A
 163 ><H2
 164 >See Also</H2
 165 ><P
 166 ><A
 167 HREF="sdlunlockyuvoverlay.html"
 168 ><TT
 169 CLASS="FUNCTION"
 170 >SDL_UnlockYUVOverlay</TT
 171 ></A
 172 >,
 173 <A
 174 HREF="sdlcreateyuvoverlay.html"
 175 ><TT
 176 CLASS="FUNCTION"
 177 >SDL_CreateYUVOverlay</TT
 178 ></A
 179 >,
 180 <A
 181 HREF="sdloverlay.html"
 182 ><SPAN
 183 CLASS="STRUCTNAME"
 184 >SDL_Overlay</SPAN
 185 ></A
 186 ></P
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