📄 sdllockyuvoverlay.html

📁 VC5.6.7的一个扩展库。跟DirectX的功能差不多。
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<HTML><HEAD><TITLE>SDL_LockYUVOverlay</TITLE><METANAME="GENERATOR"CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+"><LINKREL="HOME"TITLE="SDL Library Documentation"HREF="index.html"><LINKREL="UP"TITLE="Video"HREF="video.html"><LINKREL="PREVIOUS"TITLE="SDL_CreateYUVOverlay"HREF="sdlcreateyuvoverlay.html"><LINKREL="NEXT"TITLE="SDL_UnlockYUVOverlay"HREF="sdlunlockyuvoverlay.html"></HEAD><BODYCLASS="REFENTRY"BGCOLOR="#FFF8DC"TEXT="#000000"LINK="#0000ee"VLINK="#551a8b"ALINK="#ff0000"><DIVCLASS="NAVHEADER"><TABLESUMMARY="Header navigation table"WIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><THCOLSPAN="3"ALIGN="center">SDL Library Documentation</TH></TR><TR><TDWIDTH="10%"ALIGN="left"VALIGN="bottom"><AHREF="sdlcreateyuvoverlay.html"ACCESSKEY="P">Prev</A></TD><TDWIDTH="80%"ALIGN="center"VALIGN="bottom"></TD><TDWIDTH="10%"ALIGN="right"VALIGN="bottom"><AHREF="sdlunlockyuvoverlay.html"ACCESSKEY="N">Next</A></TD></TR></TABLE><HRALIGN="LEFT"WIDTH="100%"></DIV><H1><ANAME="SDLLOCKYUVOVERLAY"></A>SDL_LockYUVOverlay</H1><DIVCLASS="REFNAMEDIV"><ANAME="AEN2844"></A><H2>Name</H2>SDL_LockYUVOverlay&nbsp;--&nbsp;Lock an overlay</DIV><DIVCLASS="REFSYNOPSISDIV"><ANAME="AEN2847"></A><H2>Synopsis</H2><DIVCLASS="FUNCSYNOPSIS"><ANAME="AEN2848"></A><P></P><PRECLASS="FUNCSYNOPSISINFO">#include "SDL.h"</PRE><P><CODE><CODECLASS="FUNCDEF">int <BCLASS="FSFUNC">SDL_LockYUVOverlay</B></CODE>(SDL_Overlay *overlay);</CODE></P><P></P></DIV></DIV><DIVCLASS="REFSECT1"><ANAME="AEN2854"></A><H2>Description</H2><P>Much the same as <AHREF="sdllocksurface.html"><TTCLASS="FUNCTION">SDL_LockSurface</TT></A>, <TTCLASS="FUNCTION">SDL_LockYUVOverlay</TT> locks the <AHREF="sdloverlay.html"><TTCLASS="PARAMETER"><I>overlay</I></TT></A> for direct access to pixel data.</P></DIV><DIVCLASS="REFSECT1"><ANAME="AEN2862"></A><H2>Return Value</H2><P>Returns <SPANCLASS="RETURNVALUE">0</SPAN> on success, or <SPANCLASS="RETURNVALUE">-1</SPAN> on an error.</P></DIV><DIVCLASS="REFSECT1"><ANAME="AEN2867"></A><H2>See Also</H2><P><AHREF="sdlunlockyuvoverlay.html"><TTCLASS="FUNCTION">SDL_UnlockYUVOverlay</TT></A>,<AHREF="sdlcreateyuvoverlay.html"><TTCLASS="FUNCTION">SDL_CreateYUVOverlay</TT></A>,<AHREF="sdloverlay.html"><SPANCLASS="STRUCTNAME">SDL_Overlay</SPAN></A></P></DIV><DIVCLASS="NAVFOOTER"><HRALIGN="LEFT"WIDTH="100%"><TABLESUMMARY="Footer navigation table"WIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top"><AHREF="sdlcreateyuvoverlay.html"ACCESSKEY="P">Prev</A></TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="index.html"ACCESSKEY="H">Home</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top"><AHREF="sdlunlockyuvoverlay.html"ACCESSKEY="N">Next</A></TD></TR><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top">SDL_CreateYUVOverlay</TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="video.html"ACCESSKEY="U">Up</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top">SDL_UnlockYUVOverlay</TD></TR></TABLE></DIV></BODY></HTML>
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