Mercurial > sdl-ios-xcode
view docs/html/sdlwmseticon.html @ 4355:9b464226e541 SDL-1.2
Fixed bug #855
Ludwig Nussel 2009-10-18 06:31:52 PDT
an mprotect call was added to fix bug 528. However that results in a buffer
that allows writing and code execution. Ie the no-execute security features of
modern operating systems are defeated this way. Two mprotect calls are needed.
One to make the buffer executable but not writeable when done and another one
to make the buffer writeable again if the content needs to be changed.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sun, 18 Oct 2009 17:31:37 +0000 |
parents | 355632dca928 |
children |
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<HTML ><HEAD ><TITLE >SDL_WM_SetIcon</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="Window Management" HREF="wm.html"><LINK REL="PREVIOUS" TITLE="SDL_WM_GetCaption" HREF="sdlwmgetcaption.html"><LINK REL="NEXT" TITLE="SDL_WM_IconifyWindow" HREF="sdlwmiconifywindow.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="sdlwmgetcaption.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="sdlwmiconifywindow.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="SDLWMSETICON" ></A >SDL_WM_SetIcon</H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN3582" ></A ><H2 >Name</H2 >SDL_WM_SetIcon -- Sets the icon for the display window.</DIV ><DIV CLASS="REFSYNOPSISDIV" ><A NAME="AEN3585" ></A ><H2 >Synopsis</H2 ><DIV CLASS="FUNCSYNOPSIS" ><A NAME="AEN3586" ></A ><P ></P ><PRE CLASS="FUNCSYNOPSISINFO" >#include "SDL.h"</PRE ><P ><CODE ><CODE CLASS="FUNCDEF" >void <B CLASS="FSFUNC" >SDL_WM_SetIcon</B ></CODE >(SDL_Surface *icon, Uint8 *mask);</CODE ></P ><P ></P ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN3592" ></A ><H2 >Description</H2 ><P >Sets the icon for the display window. Win32 icons must be 32x32.</P ><P >This function must be called before the first call to <A HREF="sdlsetvideomode.html" >SDL_SetVideoMode</A >.</P ><P >The <TT CLASS="PARAMETER" ><I >mask</I ></TT > is a bitmask that describes the shape of the icon. If <TT CLASS="PARAMETER" ><I >mask</I ></TT > is NULL, then the shape is determined by the colorkey of <TT CLASS="PARAMETER" ><I >icon</I ></TT >, if any, or makes the icon rectangular (no transparency) otherwise.</P ><P >If <TT CLASS="PARAMETER" ><I >mask</I ></TT > is non-NULL, it points to a bitmap with bits set where the corresponding pixel should be visible. The format of the bitmap is as follows: Scanlines come in the usual top-down order. Each scanline consists of (width / 8) bytes, rounded up. The most significant bit of each byte represents the leftmost pixel.</P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN3603" ></A ><H2 >Example</H2 ><PRE CLASS="PROGRAMLISTING" >SDL_WM_SetIcon(SDL_LoadBMP("icon.bmp"), NULL);</PRE ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN3606" ></A ><H2 >See Also</H2 ><P ><A HREF="sdlsetvideomode.html" ><TT CLASS="FUNCTION" >SDL_SetVideoMode</TT ></A >, <A HREF="sdlwmsetcaption.html" ><TT CLASS="FUNCTION" >SDL_WM_SetCaption</TT ></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="sdlwmgetcaption.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="sdlwmiconifywindow.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >SDL_WM_GetCaption</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="wm.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >SDL_WM_IconifyWindow</TD ></TR ></TABLE ></DIV ></BODY ></HTML >