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view docs/html/sdlwmgrabinput.html @ 4355:9b464226e541 SDL-1.2

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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_GrabInput</TITLE
><META
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"><LINK
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><H1
><A
NAME="SDLWMGRABINPUT"
></A
>SDL_WM_GrabInput</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN3663"
></A
><H2
>Name</H2
>SDL_WM_GrabInput&nbsp;--&nbsp;Grabs mouse and keyboard input.</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN3666"
></A
><H2
>Synopsis</H2
><DIV
CLASS="FUNCSYNOPSIS"
><A
NAME="AEN3667"
></A
><P
></P
><PRE
CLASS="FUNCSYNOPSISINFO"
>#include "SDL.h"</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>SDL_GrabMode <B
CLASS="FSFUNC"
>SDL_WM_GrabInput</B
></CODE
>(SDL_GrabMode mode);</CODE
></P
><P
></P
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN3673"
></A
><H2
>Description</H2
><P
>Grabbing means that the mouse is confined to the application window,
and nearly all keyboard input is passed directly to the application,
and not interpreted by a window manager, if any.</P
><P
>When <TT
CLASS="PARAMETER"
><I
>mode</I
></TT
> is <TT
CLASS="LITERAL"
>SDL_GRAB_QUERY</TT
> the grab mode is not changed, but the current grab mode is returned.</P
><P
><PRE
CLASS="PROGRAMLISTING"
>typedef enum {
  SDL_GRAB_QUERY,
  SDL_GRAB_OFF,
  SDL_GRAB_ON
} SDL_GrabMode;</PRE
>
                    </P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN3681"
></A
><H2
>Return Value</H2
><P
>The current/new <SPAN
CLASS="STRUCTNAME"
>SDL_GrabMode</SPAN
>.</P
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