Mercurial > sdl-ios-xcode
annotate docs/html/sdlsempost.html @ 4170:092c0bc69155 SDL-1.2
Fixed bug #618
Description From Tim Angus 2008-08-30 12:23:56 (-) [reply]
As we all know SDL 1.2 doesn't handle dead keys well since one key press
potentially equals two (or more) characters. For example, on many layouts,
keying <backquote>,<space> results in <no character>,<backquote><space>. Since
the unicode member of the SDL_keysym struct only has room for one character,
only one can be returned.
On Linux, the first character is returned. On Windows however, unless the exact
number of characters generated by the keypress is 1, nothing is returned. The
following patch addresses this inconsistency.
Updated patch which includes a further fix to the handling of the numpad when
numlock is on. This further fix is courtesy Amanieu d'Antras.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Mon, 13 Apr 2009 08:42:09 +0000 |
parents | 355632dca928 |
children |
rev | line source |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_SemPost</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="Multi-threaded Programming" | |
14 HREF="thread.html"><LINK | |
15 REL="PREVIOUS" | |
16 TITLE="SDL_SemWaitTimeout" | |
17 HREF="sdlsemwaittimeout.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_SemValue" | |
20 HREF="sdlsemvalue.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="sdlsemwaittimeout.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="sdlsemvalue.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="SDLSEMPOST" | |
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74 ></A |
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75 >SDL_SemPost</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN8170" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_SemPost -- Unlock a semaphore.</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN8173" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN8174" |
0 | 95 ></A |
96 ><P | |
97 ></P | |
98 ><PRE | |
99 CLASS="FUNCSYNOPSISINFO" | |
100 >#include "SDL.h" | |
101 #include "SDL_thread.h"</PRE | |
102 ><P | |
103 ><CODE | |
104 ><CODE | |
105 CLASS="FUNCDEF" | |
106 >int <B | |
107 CLASS="FSFUNC" | |
108 >SDL_SemPost</B | |
109 ></CODE | |
110 >(SDL_sem *sem);</CODE | |
111 ></P | |
112 ><P | |
113 ></P | |
114 ></DIV | |
115 ></DIV | |
116 ><DIV | |
117 CLASS="REFSECT1" | |
118 ><A | |
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119 NAME="AEN8180" |
0 | 120 ></A |
121 ><H2 | |
122 >Description</H2 | |
123 ><P | |
124 ><TT | |
125 CLASS="FUNCTION" | |
126 >SDL_SemPost</TT | |
127 > unlocks the semaphore pointed to by | |
128 <TT | |
129 CLASS="PARAMETER" | |
130 ><I | |
131 >sem</I | |
132 ></TT | |
133 > and atomically increments the semaphores value. | |
134 Threads that were blocking on the semaphore may be scheduled after this call | |
135 succeeds.</P | |
136 ><P | |
137 ><TT | |
138 CLASS="FUNCTION" | |
139 >SDL_SemPost</TT | |
140 > should be called after a semaphore is locked by a successful call to | |
141 <A | |
142 HREF="sdlsemwait.html" | |
143 >SDL_SemWait</A | |
144 >, | |
145 <A | |
146 HREF="sdlsemtrywait.html" | |
147 >SDL_SemTryWait</A | |
148 > or | |
149 <A | |
150 HREF="sdlsemwaittimeout.html" | |
151 >SDL_SemWaitTimeout</A | |
152 >.</P | |
153 ></DIV | |
154 ><DIV | |
155 CLASS="REFSECT1" | |
156 ><A | |
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157 NAME="AEN8190" |
0 | 158 ></A |
159 ><H2 | |
160 >Return Value</H2 | |
161 ><P | |
162 >Returns <SPAN | |
163 CLASS="RETURNVALUE" | |
164 >0</SPAN | |
165 > if successful or | |
166 <SPAN | |
167 CLASS="RETURNVALUE" | |
168 >-1</SPAN | |
169 > if there was an error (leaving the semaphore unchanged).</P | |
170 ></DIV | |
171 ><DIV | |
172 CLASS="REFSECT1" | |
173 ><A | |
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174 NAME="AEN8195" |
0 | 175 ></A |
176 ><H2 | |
177 >Examples</H2 | |
178 ><P | |
179 ><PRE | |
180 CLASS="PROGRAMLISTING" | |
181 >SDL_SemPost(my_sem);</PRE | |
182 ></P | |
183 ></DIV | |
184 ><DIV | |
185 CLASS="REFSECT1" | |
186 ><A | |
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187 NAME="AEN8199" |
0 | 188 ></A |
189 ><H2 | |
190 >See Also</H2 | |
191 ><P | |
192 ><A | |
193 HREF="sdlcreatesemaphore.html" | |
194 ><TT | |
195 CLASS="FUNCTION" | |
196 >SDL_CreateSemaphore</TT | |
197 ></A | |
198 >, | |
199 <A | |
200 HREF="sdldestroysemaphore.html" | |
201 ><TT | |
202 CLASS="FUNCTION" | |
203 >SDL_DestroySemaphore</TT | |
204 ></A | |
205 >, | |
206 <A | |
207 HREF="sdlsemwait.html" | |
208 ><TT | |
209 CLASS="FUNCTION" | |
210 >SDL_SemWait</TT | |
211 ></A | |
212 >, | |
213 <A | |
214 HREF="sdlsemtrywait.html" | |
215 ><TT | |
216 CLASS="FUNCTION" | |
217 >SDL_SemTryWait</TT | |
218 ></A | |
219 >, | |
220 <A | |
221 HREF="sdlsemwaittimeout.html" | |
222 ><TT | |
223 CLASS="FUNCTION" | |
224 >SDL_SemWaitTimeout</TT | |
225 ></A | |
226 >, | |
227 <A | |
228 HREF="sdlsemvalue.html" | |
229 ><TT | |
230 CLASS="FUNCTION" | |
231 >SDL_SemValue</TT | |
232 ></A | |
233 ></P | |
234 ></DIV | |
235 ><DIV | |
236 CLASS="NAVFOOTER" | |
237 ><HR | |
238 ALIGN="LEFT" | |
239 WIDTH="100%"><TABLE | |
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240 SUMMARY="Footer navigation table" |
0 | 241 WIDTH="100%" |
242 BORDER="0" | |
243 CELLPADDING="0" | |
244 CELLSPACING="0" | |
245 ><TR | |
246 ><TD | |
247 WIDTH="33%" | |
248 ALIGN="left" | |
249 VALIGN="top" | |
250 ><A | |
251 HREF="sdlsemwaittimeout.html" | |
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252 ACCESSKEY="P" |
0 | 253 >Prev</A |
254 ></TD | |
255 ><TD | |
256 WIDTH="34%" | |
257 ALIGN="center" | |
258 VALIGN="top" | |
259 ><A | |
260 HREF="index.html" | |
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261 ACCESSKEY="H" |
0 | 262 >Home</A |
263 ></TD | |
264 ><TD | |
265 WIDTH="33%" | |
266 ALIGN="right" | |
267 VALIGN="top" | |
268 ><A | |
269 HREF="sdlsemvalue.html" | |
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270 ACCESSKEY="N" |
0 | 271 >Next</A |
272 ></TD | |
273 ></TR | |
274 ><TR | |
275 ><TD | |
276 WIDTH="33%" | |
277 ALIGN="left" | |
278 VALIGN="top" | |
279 >SDL_SemWaitTimeout</TD | |
280 ><TD | |
281 WIDTH="34%" | |
282 ALIGN="center" | |
283 VALIGN="top" | |
284 ><A | |
285 HREF="thread.html" | |
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286 ACCESSKEY="U" |
0 | 287 >Up</A |
288 ></TD | |
289 ><TD | |
290 WIDTH="33%" | |
291 ALIGN="right" | |
292 VALIGN="top" | |
293 >SDL_SemValue</TD | |
294 ></TR | |
295 ></TABLE | |
296 ></DIV | |
297 ></BODY | |
298 ></HTML | |
299 > |