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annotate docs/man3/SDL_GetKeyState.3 @ 4431:d660ca4f7b1f SDL-1.2

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Fixed bug 944 Tatu Kilappa 2010-02-11 12:13:20 PST When compiling with -Wconversion, gcc complains about a cast in SDL_endian.h that might change the result as we are casting from an int into an Uint16. This is of course not visible unless we are on a non-x86 platform where the assembler is not available. While it's not really an error, the warning is really annoying. To fix, change SDL_endian.h line 87 to: return(Uint16)((x<<8)|(x>>8)); Thank you.
author Sam Lantinga <slouken@libsdl.org>
date Tue, 13 Apr 2010 21:46:10 -0700
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1 .TH "SDL_GetKeyState" "3" "Tue 11 Sep 2001, 22:59" "SDL" "SDL API Reference"
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2 .SH "NAME"
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3 SDL_GetKeyState \- Get a snapshot of the current keyboard state
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4 .SH "SYNOPSIS"
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5 .PP
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6 \fB#include "SDL\&.h"
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7 .sp
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8 \fBUint8 *\fBSDL_GetKeyState\fP\fR(\fBint *numkeys\fR);
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9 .SH "DESCRIPTION"
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10 .PP
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11 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 \fBnumkeys\fR\&. The array is indexed by the \fI\fBSDLK_*\fP\fR 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\&.
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12 .PP
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13 .RS
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14 \fBNote:
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15 .PP
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16 Use \fI\fBSDL_PumpEvents\fP\fR to update the state array\&.
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17 .RE
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18 .SH "EXAMPLE"
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19 .PP
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20 .PP
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21 .nf
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22 \f(CWUint8 *keystate = SDL_GetKeyState(NULL);
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23 if ( keystate[SDLK_RETURN] ) printf("Return Key Pressed\&.
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24 ");\fR
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25 .fi
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26 .PP
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27 .SH "SEE ALSO"
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28 .PP
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29 \fI\fBSDL Key Symbols\fP\fR, \fI\fBSDL_PumpEvents\fP\fR
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30 .\" created by instant / docbook-to-man, Tue 11 Sep 2001, 22:59