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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>SDL_WM_SetIcon</TITLE
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>SDL_WM_SetIcon</H1
><DIV
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><H2
>Name</H2
>SDL_WM_SetIcon&nbsp;--&nbsp;Sets the icon for the display window.</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"
>void <B
CLASS="FSFUNC"
>SDL_WM_SetIcon</B
></CODE
>(SDL_Surface *icon, Uint8 *mask);</CODE
></P
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><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
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><H2
>Example</H2
><PRE
CLASS="PROGRAMLISTING"
>SDL_WM_SetIcon(SDL_LoadBMP("icon.bmp"), NULL);</PRE
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>See Also</H2
><P
><A
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><TT
CLASS="FUNCTION"
>SDL_SetVideoMode</TT
></A
>,
<A
HREF="sdlwmsetcaption.html"
><TT
CLASS="FUNCTION"
>SDL_WM_SetCaption</TT
></A
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