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view docs/html/sdlgetcliprect.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_GetClipRect</TITLE
><META
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CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
"><LINK
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><H1
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>SDL_GetClipRect</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN2230"
></A
><H2
>Name</H2
>SDL_GetClipRect&nbsp;--&nbsp;Gets the clipping rectangle for a surface.</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN2233"
></A
><H2
>Synopsis</H2
><DIV
CLASS="FUNCSYNOPSIS"
><A
NAME="AEN2234"
></A
><P
></P
><PRE
CLASS="FUNCSYNOPSISINFO"
>#include "SDL.h"</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>void <B
CLASS="FSFUNC"
>SDL_GetClipRect</B
></CODE
>(SDL_Surface *surface, SDL_Rect *rect);</CODE
></P
><P
></P
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN2240"
></A
><H2
>Description</H2
><P
>Gets the clipping rectangle for a surface.  When this surface is the
destination of a blit, only the area within the clip rectangle is
drawn into.</P
><P
>The rectangle pointed to by <TT
CLASS="PARAMETER"
><I
>rect</I
></TT
> will be
filled with the clipping rectangle of the surface.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN2245"
></A
><H2
>See Also</H2
><P
><A
HREF="sdlsetcliprect.html"
><TT
CLASS="FUNCTION"
>SDL_SetClipRect</TT
></A
>,
<A
HREF="sdlblitsurface.html"
><TT
CLASS="FUNCTION"
>SDL_BlitSurface</TT
></A
>,
<A
HREF="sdlsurface.html"
><SPAN
CLASS="STRUCTNAME"
>SDL_Surface</SPAN
></A
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