view docs/html/sdlgetkeystate.html @ 809:dba98fb391e7

Date: Tue, 13 Jan 2004 19:25:37 +0300 From: Dmitry Yakimov Subject: [SDL] [PATCH] SDL bug patch Let me introduce 2 fixes to SDL. 1. Preventing great slowdown on fast machines while hardware flipping (it's obviously bug). 2. Setting up 85 Hz of monitor if supported. The reason is that Win98 by default sets lowest frequency 60 Hz. And we can't set up maximum frequency because some users can have wrong monitor drivers. This is important for shareware and commercial programs.
author Sam Lantinga <slouken@libsdl.org>
date Wed, 11 Feb 2004 16:10:16 +0000
parents 355632dca928
children
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>SDL_GetKeyState</TITLE
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>SDL_GetKeyState</H1
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><H2
>Name</H2
>SDL_GetKeyState&nbsp;--&nbsp;Get a snapshot of the current keyboard state</DIV
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>Synopsis</H2
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><PRE
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>#include "SDL.h"</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>Uint8 *<B
CLASS="FSFUNC"
>SDL_GetKeyState</B
></CODE
>(int *numkeys);</CODE
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><H2
>Description</H2
><P
>Gets a snapshot of the current keyboard state. The current state is return as a pointer to an array, the size of this array is stored in <TT
CLASS="PARAMETER"
><I
>numkeys</I
></TT
>. The array is indexed by the <A
HREF="sdlkey.html"
><TT
CLASS="LITERAL"
>SDLK_*</TT
></A
> symbols. A value of 1 means the key is pressed and a value of 0 means its not. The pointer returned is a pointer to an internal SDL array and should not be freed by the caller.</P
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>Note: </B
>Use <A
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><TT
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>SDL_PumpEvents</TT
></A
> to update the state array.</P
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><H2
>Example</H2
><P
><PRE
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>Uint8 *keystate = SDL_GetKeyState(NULL);
if ( keystate[SDLK_RETURN] ) printf("Return Key Pressed.\n");</PRE
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><P
><A
HREF="sdlkey.html"
><TT
CLASS="LITERAL"
>SDL Key Symbols</TT
></A
>,
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>SDL_PumpEvents</TT
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