Mercurial > sdl-ios-xcode
annotate docs/html/sdlgetkeystate.html @ 803:355632dca928
Updated SDL HTML documentation
author | Sam Lantinga <slouken@libsdl.org> |
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date | Tue, 10 Feb 2004 15:15:40 +0000 |
parents | e5bc29de3f0a |
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rev | line source |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_GetKeyState</TITLE | |
5 ><META | |
6 NAME="GENERATOR" | |
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7 CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ |
0 | 8 "><LINK |
9 REL="HOME" | |
10 TITLE="SDL Library Documentation" | |
11 HREF="index.html"><LINK | |
12 REL="UP" | |
13 TITLE="Event Functions." | |
14 HREF="eventfunctions.html"><LINK | |
15 REL="PREVIOUS" | |
16 TITLE="SDL_EventState" | |
17 HREF="sdleventstate.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_GetModState" | |
20 HREF="sdlgetmodstate.html"></HEAD | |
21 ><BODY | |
22 CLASS="REFENTRY" | |
23 BGCOLOR="#FFF8DC" | |
24 TEXT="#000000" | |
25 LINK="#0000ee" | |
26 VLINK="#551a8b" | |
27 ALINK="#ff0000" | |
28 ><DIV | |
29 CLASS="NAVHEADER" | |
30 ><TABLE | |
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31 SUMMARY="Header navigation table" |
0 | 32 WIDTH="100%" |
33 BORDER="0" | |
34 CELLPADDING="0" | |
35 CELLSPACING="0" | |
36 ><TR | |
37 ><TH | |
38 COLSPAN="3" | |
39 ALIGN="center" | |
40 >SDL Library Documentation</TH | |
41 ></TR | |
42 ><TR | |
43 ><TD | |
44 WIDTH="10%" | |
45 ALIGN="left" | |
46 VALIGN="bottom" | |
47 ><A | |
48 HREF="sdleventstate.html" | |
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49 ACCESSKEY="P" |
0 | 50 >Prev</A |
51 ></TD | |
52 ><TD | |
53 WIDTH="80%" | |
54 ALIGN="center" | |
55 VALIGN="bottom" | |
56 ></TD | |
57 ><TD | |
58 WIDTH="10%" | |
59 ALIGN="right" | |
60 VALIGN="bottom" | |
61 ><A | |
62 HREF="sdlgetmodstate.html" | |
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63 ACCESSKEY="N" |
0 | 64 >Next</A |
65 ></TD | |
66 ></TR | |
67 ></TABLE | |
68 ><HR | |
69 ALIGN="LEFT" | |
70 WIDTH="100%"></DIV | |
71 ><H1 | |
72 ><A | |
73 NAME="SDLGETKEYSTATE" | |
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74 ></A |
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75 >SDL_GetKeyState</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN5686" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_GetKeyState -- Get a snapshot of the current keyboard state</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN5689" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN5690" |
0 | 95 ></A |
96 ><P | |
97 ></P | |
98 ><PRE | |
99 CLASS="FUNCSYNOPSISINFO" | |
100 >#include "SDL.h"</PRE | |
101 ><P | |
102 ><CODE | |
103 ><CODE | |
104 CLASS="FUNCDEF" | |
105 >Uint8 *<B | |
106 CLASS="FSFUNC" | |
107 >SDL_GetKeyState</B | |
108 ></CODE | |
109 >(int *numkeys);</CODE | |
110 ></P | |
111 ><P | |
112 ></P | |
113 ></DIV | |
114 ></DIV | |
115 ><DIV | |
116 CLASS="REFSECT1" | |
117 ><A | |
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118 NAME="AEN5696" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
123 >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 | |
124 CLASS="PARAMETER" | |
125 ><I | |
126 >numkeys</I | |
127 ></TT | |
128 >. The array is indexed by the <A | |
129 HREF="sdlkey.html" | |
130 ><TT | |
131 CLASS="LITERAL" | |
132 >SDLK_*</TT | |
133 ></A | |
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134 > 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 |
0 | 135 ><DIV |
136 CLASS="NOTE" | |
137 ><BLOCKQUOTE | |
138 CLASS="NOTE" | |
139 ><P | |
140 ><B | |
141 >Note: </B | |
142 >Use <A | |
143 HREF="sdlpumpevents.html" | |
144 ><TT | |
145 CLASS="FUNCTION" | |
146 >SDL_PumpEvents</TT | |
147 ></A | |
148 > to update the state array.</P | |
149 ></BLOCKQUOTE | |
150 ></DIV | |
151 ></DIV | |
152 ><DIV | |
153 CLASS="REFSECT1" | |
154 ><A | |
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155 NAME="AEN5706" |
0 | 156 ></A |
157 ><H2 | |
158 >Example</H2 | |
159 ><P | |
160 ><PRE | |
161 CLASS="PROGRAMLISTING" | |
162 >Uint8 *keystate = SDL_GetKeyState(NULL); | |
163 if ( keystate[SDLK_RETURN] ) printf("Return Key Pressed.\n");</PRE | |
164 ></P | |
165 ></DIV | |
166 ><DIV | |
167 CLASS="REFSECT1" | |
168 ><A | |
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169 NAME="AEN5710" |
0 | 170 ></A |
171 ><H2 | |
172 >See Also</H2 | |
173 ><P | |
174 ><A | |
175 HREF="sdlkey.html" | |
176 ><TT | |
177 CLASS="LITERAL" | |
178 >SDL Key Symbols</TT | |
179 ></A | |
180 >, | |
181 <A | |
182 HREF="sdlpumpevents.html" | |
183 ><TT | |
184 CLASS="FUNCTION" | |
185 >SDL_PumpEvents</TT | |
186 ></A | |
187 ></P | |
188 ></DIV | |
189 ><DIV | |
190 CLASS="NAVFOOTER" | |
191 ><HR | |
192 ALIGN="LEFT" | |
193 WIDTH="100%"><TABLE | |
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194 SUMMARY="Footer navigation table" |
0 | 195 WIDTH="100%" |
196 BORDER="0" | |
197 CELLPADDING="0" | |
198 CELLSPACING="0" | |
199 ><TR | |
200 ><TD | |
201 WIDTH="33%" | |
202 ALIGN="left" | |
203 VALIGN="top" | |
204 ><A | |
205 HREF="sdleventstate.html" | |
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206 ACCESSKEY="P" |
0 | 207 >Prev</A |
208 ></TD | |
209 ><TD | |
210 WIDTH="34%" | |
211 ALIGN="center" | |
212 VALIGN="top" | |
213 ><A | |
214 HREF="index.html" | |
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215 ACCESSKEY="H" |
0 | 216 >Home</A |
217 ></TD | |
218 ><TD | |
219 WIDTH="33%" | |
220 ALIGN="right" | |
221 VALIGN="top" | |
222 ><A | |
223 HREF="sdlgetmodstate.html" | |
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224 ACCESSKEY="N" |
0 | 225 >Next</A |
226 ></TD | |
227 ></TR | |
228 ><TR | |
229 ><TD | |
230 WIDTH="33%" | |
231 ALIGN="left" | |
232 VALIGN="top" | |
233 >SDL_EventState</TD | |
234 ><TD | |
235 WIDTH="34%" | |
236 ALIGN="center" | |
237 VALIGN="top" | |
238 ><A | |
239 HREF="eventfunctions.html" | |
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240 ACCESSKEY="U" |
0 | 241 >Up</A |
242 ></TD | |
243 ><TD | |
244 WIDTH="33%" | |
245 ALIGN="right" | |
246 VALIGN="top" | |
247 >SDL_GetModState</TD | |
248 ></TR | |
249 ></TABLE | |
250 ></DIV | |
251 ></BODY | |
252 ></HTML | |
253 > |