annotate docs/man3/SDL_GetKeyState.3 @ 1180:bdcb8bb4c831

From: Tyler Montbriand <tsm@accesscomm.ca> To: sdl@libsdl.org Date: Fri, 30 Sep 2005 02:24:50 -0600 Subject: [SDL] WinCE timers, continued Here's a strange timer for Windows CE that doesn't ignore time across suspends. It uses GetSystemTime to keep the time continuous, and GetTicks to get finer-grained readings than 1 second. It detects the difference between the GetTicks time and GetSystemTime time on power-on to keep the error within one second max. It's not a patch on the current win32 timer code -- took one look at that and figured it had more than enough #ifdefs already. It's windows-ce specific. Another thing I've noticed is that the Windows CE 4.0 and newer API has functions warn processes about suspends. This is something SDL REALLY needs for audio in particular, because turning it off while it's playing causes anything that uses audio to hardlock the system on power-on. Unfortunately I don't have 4.0 to play with. :(
author Ryan C. Gordon <icculus@icculus.org>
date Tue, 22 Nov 2005 07:10:07 +0000
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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