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><H1
><A
NAME="SDLLOCKYUVOVERLAY"
>SDL_LockYUVOverlay</A
></H1
><DIV
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><A
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><H2
>Name</H2
>SDL_LockYUVOverlay&nbsp;--&nbsp;Lock an overlay</DIV
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>Synopsis</H2
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><PRE
CLASS="FUNCSYNOPSISINFO"
>#include "SDL.h"</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>int <B
CLASS="FSFUNC"
>SDL_LockYUVOverlay</B
></CODE
>(SDL_Overlay *overlay);</CODE
></P
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><H2
>Description</H2
><P
>Much the same as <A
HREF="sdllocksurface.html"
><TT
CLASS="FUNCTION"
>SDL_LockSurface</TT
></A
>, <TT
CLASS="FUNCTION"
>SDL_LockYUVOverlay</TT
> locks the <A
HREF="sdloverlay.html"
><TT
CLASS="PARAMETER"
><I
>overlay</I
></TT
></A
> for direct access to pixel data.</P
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><H2
>Return Value</H2
><P
>Returns <SPAN
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>0</SPAN
> on success, or <SPAN
CLASS="RETURNVALUE"
>-1</SPAN
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><H2
>See Also</H2
><P
><A
HREF="sdlunlockyuvoverlay.html"
><TT
CLASS="FUNCTION"
>SDL_UnlockYUVOverlay</TT
></A
>,
<A
HREF="sdlcreateyuvoverlay.html"
><TT
CLASS="FUNCTION"
>SDL_CreateYUVOverlay</TT
></A
>,
<A
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><SPAN
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>SDL_Overlay</SPAN
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author	Sam Lantinga <slouken@libsdl.org>
date	Sat, 01 Feb 2003 18:58:42 +0000
parents	e5bc29de3f0a
children	355632dca928