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view docs/html/sdlexposeevent.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 720a96badf51
children
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<HTML
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>SDL_ExposeEvent</TITLE
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><H1
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>SDL_ExposeEvent</H1
><DIV
CLASS="REFNAMEDIV"
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NAME="AEN4503"
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><H2
>Name</H2
>SDL_ExposeEvent&nbsp;--&nbsp;Quit requested event</DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN4506"
></A
><H2
>Structure Definition</H2
><PRE
CLASS="PROGRAMLISTING"
>typedef struct{
  Uint8 type
} SDL_ExposeEvent;</PRE
></DIV
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>Structure Data</H2
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><TT
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><I
>type</I
></TT
></TD
><TD
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><TT
CLASS="LITERAL"
>SDL_VIDEOEXPOSE</TT
></TD
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></TBODY
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><H2
>Description</H2
><P
><SPAN
CLASS="STRUCTNAME"
>SDL_ExposeEvent</SPAN
> is a member of the <A
HREF="sdlevent.html"
><SPAN
CLASS="STRUCTNAME"
>SDL_Event</SPAN
></A
> union and is used whan an event of type <TT
CLASS="LITERAL"
>SDL_VIDEOEXPOSE</TT
> is reported.</P
><P
>A VIDEOEXPOSE event is triggered when the screen has been modified
outside of the application, usually by the window manager and needs to
be redrawn.</P
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>See Also</H2
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