Mercurial > sdl-ios-xcode
view docs/html/sdldisplayformat.html @ 2318:0c653886cce7
HandleEvent() returns done each time it is called. If done was set to 0 the program should quit, but because done is not checked until *all* events are handled a
following event can reset done to 1 and prevent the program from terminating when told to. I fixed the while loop that handles events to check for the state of done
after handling each event. That could leave some events unhandled when the program exits, but it ensures that the program will exit.
author | Bob Pendleton <bob@pendleton.com> |
---|---|
date | Wed, 20 Feb 2008 23:27:33 +0000 |
parents | 355632dca928 |
children |
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<HTML ><HEAD ><TITLE >SDL_DisplayFormat</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ "><LINK REL="HOME" TITLE="SDL Library Documentation" HREF="index.html"><LINK REL="UP" TITLE="Video" HREF="video.html"><LINK REL="PREVIOUS" TITLE="SDL_FillRect" HREF="sdlfillrect.html"><LINK REL="NEXT" TITLE="SDL_DisplayFormatAlpha" HREF="sdldisplayformatalpha.html"></HEAD ><BODY CLASS="REFENTRY" BGCOLOR="#FFF8DC" TEXT="#000000" LINK="#0000ee" VLINK="#551a8b" ALINK="#ff0000" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >SDL Library Documentation</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="sdlfillrect.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="sdldisplayformatalpha.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="SDLDISPLAYFORMAT" ></A >SDL_DisplayFormat</H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN2394" ></A ><H2 >Name</H2 >SDL_DisplayFormat -- Convert a surface to the display format</DIV ><DIV CLASS="REFSYNOPSISDIV" ><A NAME="AEN2397" ></A ><H2 >Synopsis</H2 ><DIV CLASS="FUNCSYNOPSIS" ><A NAME="AEN2398" ></A ><P ></P ><PRE CLASS="FUNCSYNOPSISINFO" >#include "SDL.h"</PRE ><P ><CODE ><CODE CLASS="FUNCDEF" >SDL_Surface *<B CLASS="FSFUNC" >SDL_DisplayFormat</B ></CODE >(SDL_Surface *surface);</CODE ></P ><P ></P ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN2404" ></A ><H2 >Description</H2 ><P >This function takes a surface and copies it to a new surface of the pixel format and colors of the video framebuffer, suitable for fast blitting onto the display surface. It calls <A HREF="sdlconvertsurface.html" >SDL_ConvertSurface</A ></P ><P >If you want to take advantage of hardware colorkey or alpha blit acceleration, you should set the colorkey and alpha value before calling this function.</P ><P >If you want an alpha channel, see <A HREF="sdldisplayformatalpha.html" >SDL_DisplayFormatAlpha</A >.</P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN2411" ></A ><H2 >Return Value</H2 ><P >If the conversion fails or runs out of memory, it returns <SPAN CLASS="RETURNVALUE" >NULL</SPAN ></P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN2415" ></A ><H2 >See Also</H2 ><P ><A HREF="sdlconvertsurface.html" ><TT CLASS="FUNCTION" >SDL_ConvertSurface</TT ></A >, <A HREF="sdldisplayformatalpha.html" ><TT CLASS="FUNCTION" >SDL_DisplayFormatAlpha</TT ></A > <A HREF="sdlsetalpha.html" ><TT CLASS="FUNCTION" >SDL_SetAlpha</TT ></A >, <A HREF="sdlsetcolorkey.html" ><TT CLASS="FUNCTION" >SDL_SetColorKey</TT ></A >, <A HREF="sdlsurface.html" ><SPAN CLASS="STRUCTNAME" >SDL_Surface</SPAN ></A ></P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="sdlfillrect.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="sdldisplayformatalpha.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >SDL_FillRect</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="video.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >SDL_DisplayFormatAlpha</TD ></TR ></TABLE ></DIV ></BODY ></HTML >