Mercurial > sdl-ios-xcode
annotate docs/html/sdlkeyboardevent.html @ 1260:80f8c94b5199
Date: 10 Jun 2003 15:30:59 -0400
From: Mike Shal
Subject: [SDL] Bug in SDL_wave.c?
Hey everyone, I'm not sure if this is a bug in SDL, or if I just have
incorrect WAV files. The problem I'm having is loading multiple
concatenated WAVs from SDL_LoadWAV_RW. Some WAV files put comments at
the end of the file (which may be bad form), and SDL doesn't skip past
them when reading from the RWops. So the next WAV I try to load will
start at the comment section of the previous WAV, which obviously
doesn't work. If anyone else is having this problem, one quick fix you
can do is run sox on the bad WAVs, which strips out all of the comment
sections.
Eg:
$ sox sound.wav tmp.wav
$ mv -f tmp.wav sound.wav
The other fix is to patch SDL_wave.c, which is included with this email.
(Assuming I made the patch correctly :). All it does is calculate how
much remaining space there is in the WAV file after the data chunk, and
does SDL_RWseek to skip it. I don't think it should interfere with
anything else, but if someone could check it that would be nice :). If
the bug is really with SDL and not with my WAVs, can someone work this
into the next version of SDL? Thanks,
-Mike Shal
author | Sam Lantinga <slouken@libsdl.org> |
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date | Tue, 24 Jan 2006 07:20:18 +0000 |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_KeyboardEvent</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="SDL Event Structures." | |
14 HREF="eventstructures.html"><LINK | |
15 REL="PREVIOUS" | |
16 TITLE="SDL_ActiveEvent" | |
17 HREF="sdlactiveevent.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_MouseMotionEvent" | |
20 HREF="sdlmousemotionevent.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="sdlactiveevent.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="sdlmousemotionevent.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="SDLKEYBOARDEVENT" | |
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74 ></A |
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75 >SDL_KeyboardEvent</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN4011" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_KeyboardEvent -- Keyboard event structure</DIV | |
84 ><DIV | |
85 CLASS="REFSECT1" | |
86 ><A | |
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87 NAME="AEN4014" |
0 | 88 ></A |
89 ><H2 | |
90 >Structure Definition</H2 | |
91 ><PRE | |
92 CLASS="PROGRAMLISTING" | |
93 >typedef struct{ | |
94 Uint8 type; | |
95 Uint8 state; | |
96 SDL_keysym keysym; | |
97 } SDL_KeyboardEvent;</PRE | |
98 ></DIV | |
99 ><DIV | |
100 CLASS="REFSECT1" | |
101 ><A | |
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102 NAME="AEN4017" |
0 | 103 ></A |
104 ><H2 | |
105 >Structure Data</H2 | |
106 ><DIV | |
107 CLASS="INFORMALTABLE" | |
108 ><A | |
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109 NAME="AEN4019" |
0 | 110 ></A |
111 ><P | |
112 ></P | |
113 ><TABLE | |
114 BORDER="0" | |
115 CLASS="CALSTABLE" | |
116 ><TBODY | |
117 ><TR | |
118 ><TD | |
119 ALIGN="LEFT" | |
120 VALIGN="TOP" | |
121 ><TT | |
122 CLASS="STRUCTFIELD" | |
123 ><I | |
124 >type</I | |
125 ></TT | |
126 ></TD | |
127 ><TD | |
128 ALIGN="LEFT" | |
129 VALIGN="TOP" | |
130 ><TT | |
131 CLASS="LITERAL" | |
132 >SDL_KEYDOWN</TT | |
133 > or <TT | |
134 CLASS="LITERAL" | |
135 >SDL_KEYUP</TT | |
136 ></TD | |
137 ></TR | |
138 ><TR | |
139 ><TD | |
140 ALIGN="LEFT" | |
141 VALIGN="TOP" | |
142 ><TT | |
143 CLASS="STRUCTFIELD" | |
144 ><I | |
145 >state</I | |
146 ></TT | |
147 ></TD | |
148 ><TD | |
149 ALIGN="LEFT" | |
150 VALIGN="TOP" | |
151 ><TT | |
152 CLASS="LITERAL" | |
153 >SDL_PRESSED</TT | |
154 > or <TT | |
155 CLASS="LITERAL" | |
156 >SDL_RELEASED</TT | |
157 ></TD | |
158 ></TR | |
159 ><TR | |
160 ><TD | |
161 ALIGN="LEFT" | |
162 VALIGN="TOP" | |
163 ><TT | |
164 CLASS="STRUCTFIELD" | |
165 ><I | |
166 >keysym</I | |
167 ></TT | |
168 ></TD | |
169 ><TD | |
170 ALIGN="LEFT" | |
171 VALIGN="TOP" | |
172 >Contains key press information</TD | |
173 ></TR | |
174 ></TBODY | |
175 ></TABLE | |
176 ><P | |
177 ></P | |
178 ></DIV | |
179 ></DIV | |
180 ><DIV | |
181 CLASS="REFSECT1" | |
182 ><A | |
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183 NAME="AEN4038" |
0 | 184 ></A |
185 ><H2 | |
186 >Description</H2 | |
187 ><P | |
188 ><SPAN | |
189 CLASS="STRUCTNAME" | |
190 >SDL_KeyboardEvent</SPAN | |
191 > is a member of the <A | |
192 HREF="sdlevent.html" | |
193 ><SPAN | |
194 CLASS="STRUCTNAME" | |
195 >SDL_Event</SPAN | |
196 ></A | |
197 > union and is used when an event of type <TT | |
198 CLASS="LITERAL" | |
199 >SDL_KEYDOWN</TT | |
200 > or <TT | |
201 CLASS="LITERAL" | |
202 >SDL_KEYUP</TT | |
203 > is reported.</P | |
204 ><P | |
205 >The <TT | |
206 CLASS="STRUCTFIELD" | |
207 ><I | |
208 >type</I | |
209 ></TT | |
210 > and <TT | |
211 CLASS="STRUCTFIELD" | |
212 ><I | |
213 >state</I | |
214 ></TT | |
215 > actually report the same information, they just use different values to do it! A keyboard event occurs when a key is released (<TT | |
216 CLASS="STRUCTFIELD" | |
217 ><I | |
218 >type</I | |
219 ></TT | |
220 >=<TT | |
221 CLASS="LITERAL" | |
222 >SDK_KEYUP</TT | |
223 > or <TT | |
224 CLASS="STRUCTFIELD" | |
225 ><I | |
226 >state</I | |
227 ></TT | |
228 >=<TT | |
229 CLASS="LITERAL" | |
230 >SDL_RELEASED</TT | |
231 >) and when a key is pressed (<TT | |
232 CLASS="STRUCTFIELD" | |
233 ><I | |
234 >type</I | |
235 ></TT | |
236 >=<TT | |
237 CLASS="LITERAL" | |
238 >SDL_KEYDOWN</TT | |
239 > or <TT | |
240 CLASS="STRUCTFIELD" | |
241 ><I | |
242 >state</I | |
243 ></TT | |
244 >=<TT | |
245 CLASS="LITERAL" | |
246 >SDL_PRESSED</TT | |
247 >). The information on what key was pressed or released is in the <A | |
248 HREF="sdlkeysym.html" | |
249 ><SPAN | |
250 CLASS="STRUCTNAME" | |
251 >keysym</SPAN | |
252 ></A | |
253 > structure.</P | |
254 ><DIV | |
255 CLASS="NOTE" | |
256 ><BLOCKQUOTE | |
257 CLASS="NOTE" | |
258 ><P | |
259 ><B | |
260 >Note: </B | |
261 >Repeating <TT | |
262 CLASS="LITERAL" | |
263 >SDL_KEYDOWN</TT | |
264 > events will occur if key repeat is enabled (see <A | |
265 HREF="sdlenablekeyrepeat.html" | |
266 ><TT | |
267 CLASS="FUNCTION" | |
268 >SDL_EnableKeyRepeat</TT | |
269 ></A | |
270 >).</P | |
271 ></BLOCKQUOTE | |
272 ></DIV | |
273 ></DIV | |
274 ><DIV | |
275 CLASS="REFSECT1" | |
276 ><A | |
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277 NAME="AEN4064" |
0 | 278 ></A |
279 ><H2 | |
280 >See Also</H2 | |
281 ><P | |
282 ><A | |
283 HREF="sdlevent.html" | |
284 ><SPAN | |
285 CLASS="STRUCTNAME" | |
286 >SDL_Event</SPAN | |
287 ></A | |
288 >, | |
289 <A | |
290 HREF="sdlkeysym.html" | |
291 ><SPAN | |
292 CLASS="STRUCTNAME" | |
293 >SDL_keysym</SPAN | |
294 ></A | |
295 >, | |
296 <A | |
297 HREF="sdlenablekeyrepeat.html" | |
298 ><TT | |
299 CLASS="FUNCTION" | |
300 >SDL_EnableKeyRepeat</TT | |
301 ></A | |
302 >, | |
303 <A | |
304 HREF="sdlenableunicode.html" | |
305 ><TT | |
306 CLASS="FUNCTION" | |
307 >SDL_EnableUNICODE</TT | |
308 ></A | |
309 ></P | |
310 ></DIV | |
311 ><DIV | |
312 CLASS="NAVFOOTER" | |
313 ><HR | |
314 ALIGN="LEFT" | |
315 WIDTH="100%"><TABLE | |
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316 SUMMARY="Footer navigation table" |
0 | 317 WIDTH="100%" |
318 BORDER="0" | |
319 CELLPADDING="0" | |
320 CELLSPACING="0" | |
321 ><TR | |
322 ><TD | |
323 WIDTH="33%" | |
324 ALIGN="left" | |
325 VALIGN="top" | |
326 ><A | |
327 HREF="sdlactiveevent.html" | |
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328 ACCESSKEY="P" |
0 | 329 >Prev</A |
330 ></TD | |
331 ><TD | |
332 WIDTH="34%" | |
333 ALIGN="center" | |
334 VALIGN="top" | |
335 ><A | |
336 HREF="index.html" | |
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337 ACCESSKEY="H" |
0 | 338 >Home</A |
339 ></TD | |
340 ><TD | |
341 WIDTH="33%" | |
342 ALIGN="right" | |
343 VALIGN="top" | |
344 ><A | |
345 HREF="sdlmousemotionevent.html" | |
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346 ACCESSKEY="N" |
0 | 347 >Next</A |
348 ></TD | |
349 ></TR | |
350 ><TR | |
351 ><TD | |
352 WIDTH="33%" | |
353 ALIGN="left" | |
354 VALIGN="top" | |
355 >SDL_ActiveEvent</TD | |
356 ><TD | |
357 WIDTH="34%" | |
358 ALIGN="center" | |
359 VALIGN="top" | |
360 ><A | |
361 HREF="eventstructures.html" | |
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362 ACCESSKEY="U" |
0 | 363 >Up</A |
364 ></TD | |
365 ><TD | |
366 WIDTH="33%" | |
367 ALIGN="right" | |
368 VALIGN="top" | |
369 >SDL_MouseMotionEvent</TD | |
370 ></TR | |
371 ></TABLE | |
372 ></DIV | |
373 ></BODY | |
374 ></HTML | |
375 > |