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<HTML><HEAD><TITLE>SDL_Flip</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_UpdateRects"HREF="sdlupdaterects.html"><LINKREL="NEXT"TITLE="SDL_SetColors"HREF="sdlsetcolors.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="sdlupdaterects.html"ACCESSKEY="P">Prev</A></TD><TDWIDTH="80%"ALIGN="center"VALIGN="bottom"></TD><TDWIDTH="10%"ALIGN="right"VALIGN="bottom"><AHREF="sdlsetcolors.html"ACCESSKEY="N">Next</A></TD></TR></TABLE><HRALIGN="LEFT"WIDTH="100%"></DIV><H1><ANAME="SDLFLIP"></A>SDL_Flip</H1><DIVCLASS="REFNAMEDIV"><ANAME="AEN1426"></A><H2>Name</H2>SDL_Flip -- Swaps screen buffers</DIV><DIVCLASS="REFSYNOPSISDIV"><ANAME="AEN1429"></A><H2>Synopsis</H2><DIVCLASS="FUNCSYNOPSIS"><ANAME="AEN1430"></A><P></P><PRECLASS="FUNCSYNOPSISINFO">#include "SDL.h"</PRE><P><CODE><CODECLASS="FUNCDEF">int <BCLASS="FSFUNC">SDL_Flip</B></CODE>(SDL_Surface *screen);</CODE></P><P></P></DIV></DIV><DIVCLASS="REFSECT1"><ANAME="AEN1436"></A><H2>Description</H2><P>On hardware that supports double-buffering, this function sets up a flipand returns. The hardware will wait for vertical retrace, and then swapvideo buffers before the next video surface blit or lock will return.On hardware that doesn't support double-buffering, this is equivalentto calling <AHREF="sdlupdaterect.html">SDL_UpdateRect</A><TTCLASS="PARAMETER"><I>(screen, 0, 0, 0, 0)</I></TT></P><P>The <TTCLASS="LITERAL">SDL_DOUBLEBUF</TT> flag must have been passed to <AHREF="sdlsetvideomode.html">SDL_SetVideoMode</A>, whensetting the video mode for this function to perform hardware flipping.</P></DIV><DIVCLASS="REFSECT1"><ANAME="AEN1444"></A><H2>Return Value</H2><P>This function returns <SPANCLASS="RETURNVALUE">0</SPAN> if successful, or <SPANCLASS="RETURNVALUE">-1</SPAN> if there was an error.</P></DIV><DIVCLASS="REFSECT1"><ANAME="AEN1449"></A><H2>See Also</H2><P><AHREF="sdlsetvideomode.html"><TTCLASS="FUNCTION">SDL_SetVideoMode</TT></A>,<AHREF="sdlupdaterect.html"><TTCLASS="FUNCTION">SDL_UpdateRect</TT></A>,<AHREF="sdlsurface.html"><SPANCLASS="STRUCTNAME">SDL_Surface</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="sdlupdaterects.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="sdlsetcolors.html"ACCESSKEY="N">Next</A></TD></TR><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top">SDL_UpdateRects</TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="video.html"ACCESSKEY="U">Up</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top">SDL_SetColors</TD></TR></TABLE></DIV></BODY></HTML>⌨️ 快捷键说明
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