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view docs/html/sdlwmgrabinput.html @ 3880:74e828c64315 SDL-1.2

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Fixed bug #292 I might be on crack here. It looks like SDL_ConvertMono() in src/audio/SDL_audiocvt.c adds the left and right channels of a stereo stream together, and clamps the new mono channel if it would overflow. Shouldn't it be dividing by 2 to average the two sample points instead of clamping? Otherwise the mono sample point's volume doubles in the conversion. This would also make the conversion faster, as it replaces two branches per sample frame with a bitwise shift. --ryan.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 24 Sep 2006 15:45:37 +0000
parents 355632dca928
children
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<HTML
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>SDL_WM_GrabInput</TITLE
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><H1
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>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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