Mercurial > sdl-ios-xcode
view docs/html/sdllockyuvoverlay.html @ 1614:6162b8d921ce
Date: Wed, 29 Mar 2006 17:26:55 +0200 CEST
From: "Fran���is Revol"
Subject: [SDL] BeOS port fix: PrintScreen key crashing
It seems the latest SDL crashes when someone hits the PrtScrn key in
ZETA (BeOS R6), somewhere it gets a negative value as key code (or a
big unsigned maybe ?), and uses it as an index in the keysym table...
I'll investigate the cause for the negative value, but it's always
better to check for bounds correctly when indexing a table. The
attached diff fixes it.
Fran���is Revol
--
Software Architect
yellowTAB GmbH
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Fri, 31 Mar 2006 06:16:20 +0000 |
parents | 355632dca928 |
children |
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<HTML ><HEAD ><TITLE >SDL_LockYUVOverlay</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_CreateYUVOverlay" HREF="sdlcreateyuvoverlay.html"><LINK REL="NEXT" TITLE="SDL_UnlockYUVOverlay" HREF="sdlunlockyuvoverlay.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="sdlcreateyuvoverlay.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="sdlunlockyuvoverlay.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="SDLLOCKYUVOVERLAY" ></A >SDL_LockYUVOverlay</H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN2844" ></A ><H2 >Name</H2 >SDL_LockYUVOverlay -- Lock an overlay</DIV ><DIV CLASS="REFSYNOPSISDIV" ><A NAME="AEN2847" ></A ><H2 >Synopsis</H2 ><DIV CLASS="FUNCSYNOPSIS" ><A NAME="AEN2848" ></A ><P ></P ><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 ><P ></P ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN2854" ></A ><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 ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN2862" ></A ><H2 >Return Value</H2 ><P >Returns <SPAN CLASS="RETURNVALUE" >0</SPAN > on success, or <SPAN CLASS="RETURNVALUE" >-1</SPAN > on an error.</P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN2867" ></A ><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 HREF="sdloverlay.html" ><SPAN CLASS="STRUCTNAME" >SDL_Overlay</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="sdlcreateyuvoverlay.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="sdlunlockyuvoverlay.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >SDL_CreateYUVOverlay</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_UnlockYUVOverlay</TD ></TR ></TABLE ></DIV ></BODY ></HTML >