view docs/html/sdlgetmousestate.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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>SDL_GetMouseState</TITLE
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><H1
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>SDL_GetMouseState</H1
><DIV
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NAME="AEN5869"
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><H2
>Name</H2
>SDL_GetMouseState&nbsp;--&nbsp;Retrieve the current state of the mouse</DIV
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>Synopsis</H2
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><P
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><PRE
CLASS="FUNCSYNOPSISINFO"
>#include "SDL.h"</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>Uint8 <B
CLASS="FSFUNC"
>SDL_GetMouseState</B
></CODE
>(int *x, int *y);</CODE
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><H2
>Description</H2
><P
>The current button state is returned as a button bitmask, which can
be tested using the <TT
CLASS="LITERAL"
>SDL_BUTTON(X)</TT
> macros, and <TT
CLASS="PARAMETER"
><I
>x</I
></TT
> and <TT
CLASS="PARAMETER"
><I
>y</I
></TT
> are set to the
current mouse cursor position.  You can pass <TT
CLASS="LITERAL"
>NULL</TT
> for either <TT
CLASS="PARAMETER"
><I
>x</I
></TT
> or <TT
CLASS="PARAMETER"
><I
>y</I
></TT
>.</P
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><H2
>Example</H2
><PRE
CLASS="PROGRAMLISTING"
>SDL_PumpEvents();
if(SDL_GetMouseState(NULL, NULL)&#38;SDL_BUTTON(1))
  printf("Mouse Button 1(left) is pressed.\n");</PRE
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>See Also</H2
><P
><A
HREF="sdlgetrelativemousestate.html"
><TT
CLASS="FUNCTION"
>SDL_GetRelativeMouseState</TT
></A
>,
<A
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><TT
CLASS="FUNCTION"
>SDL_PumpEvents</TT
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