Mercurial > sdl-ios-xcode
annotate docs/html/sdlcreatemutex.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> |
|---|---|
| date | Mon, 13 Apr 2009 08:42:09 +0000 |
| parents | 355632dca928 |
| children |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >SDL_CreateMutex</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_KillThread" | |
| 17 HREF="sdlkillthread.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="SDL_DestroyMutex" | |
| 20 HREF="sdldestroymutex.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="sdlkillthread.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="sdldestroymutex.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="SDLCREATEMUTEX" | |
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74 ></A |
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75 >SDL_CreateMutex</H1 |
| 0 | 76 ><DIV |
| 77 CLASS="REFNAMEDIV" | |
| 78 ><A | |
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79 NAME="AEN7820" |
| 0 | 80 ></A |
| 81 ><H2 | |
| 82 >Name</H2 | |
| 83 >SDL_CreateMutex -- Create a mutex</DIV | |
| 84 ><DIV | |
| 85 CLASS="REFSYNOPSISDIV" | |
| 86 ><A | |
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87 NAME="AEN7823" |
| 0 | 88 ></A |
| 89 ><H2 | |
| 90 >Synopsis</H2 | |
| 91 ><DIV | |
| 92 CLASS="FUNCSYNOPSIS" | |
| 93 ><A | |
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94 NAME="AEN7824" |
| 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 >SDL_mutex *<B | |
| 107 CLASS="FSFUNC" | |
| 108 >SDL_CreateMutex</B | |
| 109 ></CODE | |
| 110 >(void);</CODE | |
| 111 ></P | |
| 112 ><P | |
| 113 ></P | |
| 114 ></DIV | |
| 115 ></DIV | |
| 116 ><DIV | |
| 117 CLASS="REFSECT1" | |
| 118 ><A | |
|
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119 NAME="AEN7830" |
| 0 | 120 ></A |
| 121 ><H2 | |
| 122 >Description</H2 | |
| 123 ><P | |
| 124 >Create a new, unlocked mutex.</P | |
| 125 ></DIV | |
| 126 ><DIV | |
| 127 CLASS="REFSECT1" | |
| 128 ><A | |
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129 NAME="AEN7833" |
| 0 | 130 ></A |
| 131 ><H2 | |
| 132 >Examples</H2 | |
| 133 ><PRE | |
| 134 CLASS="PROGRAMLISTING" | |
| 135 >SDL_mutex *mut; | |
| 136 | |
| 137 mut=SDL_CreateMutex(); | |
| 138 . | |
| 139 . | |
| 140 if(SDL_mutexP(mut)==-1){ | |
| 141 fprintf(stderr, "Couldn't lock mutex\n"); | |
| 142 exit(-1); | |
| 143 } | |
| 144 . | |
| 145 /* Do stuff while mutex is locked */ | |
| 146 . | |
| 147 . | |
| 148 if(SDL_mutexV(mut)==-1){ | |
| 149 fprintf(stderr, "Couldn't unlock mutex\n"); | |
| 150 exit(-1); | |
| 151 } | |
| 152 | |
| 153 SDL_DestroyMutex(mut); </PRE | |
| 154 ></DIV | |
| 155 ><DIV | |
| 156 CLASS="REFSECT1" | |
| 157 ><A | |
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158 NAME="AEN7836" |
| 0 | 159 ></A |
| 160 ><H2 | |
| 161 >See Also</H2 | |
| 162 ><P | |
| 163 ><A | |
| 164 HREF="sdlmutexp.html" | |
| 165 ><TT | |
| 166 CLASS="FUNCTION" | |
| 167 >SDL_mutexP</TT | |
| 168 ></A | |
| 169 >, | |
| 170 <A | |
| 171 HREF="sdlmutexv.html" | |
| 172 ><TT | |
| 173 CLASS="FUNCTION" | |
| 174 >SDL_mutexV</TT | |
| 175 ></A | |
| 176 >, | |
| 177 <A | |
| 178 HREF="sdldestroymutex.html" | |
| 179 ><TT | |
| 180 CLASS="FUNCTION" | |
| 181 >SDL_DestroyMutex</TT | |
| 182 ></A | |
| 183 ></P | |
| 184 ></DIV | |
| 185 ><DIV | |
| 186 CLASS="NAVFOOTER" | |
| 187 ><HR | |
| 188 ALIGN="LEFT" | |
| 189 WIDTH="100%"><TABLE | |
|
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190 SUMMARY="Footer navigation table" |
| 0 | 191 WIDTH="100%" |
| 192 BORDER="0" | |
| 193 CELLPADDING="0" | |
| 194 CELLSPACING="0" | |
| 195 ><TR | |
| 196 ><TD | |
| 197 WIDTH="33%" | |
| 198 ALIGN="left" | |
| 199 VALIGN="top" | |
| 200 ><A | |
| 201 HREF="sdlkillthread.html" | |
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202 ACCESSKEY="P" |
| 0 | 203 >Prev</A |
| 204 ></TD | |
| 205 ><TD | |
| 206 WIDTH="34%" | |
| 207 ALIGN="center" | |
| 208 VALIGN="top" | |
| 209 ><A | |
| 210 HREF="index.html" | |
|
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211 ACCESSKEY="H" |
| 0 | 212 >Home</A |
| 213 ></TD | |
| 214 ><TD | |
| 215 WIDTH="33%" | |
| 216 ALIGN="right" | |
| 217 VALIGN="top" | |
| 218 ><A | |
| 219 HREF="sdldestroymutex.html" | |
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220 ACCESSKEY="N" |
| 0 | 221 >Next</A |
| 222 ></TD | |
| 223 ></TR | |
| 224 ><TR | |
| 225 ><TD | |
| 226 WIDTH="33%" | |
| 227 ALIGN="left" | |
| 228 VALIGN="top" | |
| 229 >SDL_KillThread</TD | |
| 230 ><TD | |
| 231 WIDTH="34%" | |
| 232 ALIGN="center" | |
| 233 VALIGN="top" | |
| 234 ><A | |
| 235 HREF="thread.html" | |
|
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parents:
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236 ACCESSKEY="U" |
| 0 | 237 >Up</A |
| 238 ></TD | |
| 239 ><TD | |
| 240 WIDTH="33%" | |
| 241 ALIGN="right" | |
| 242 VALIGN="top" | |
| 243 >SDL_DestroyMutex</TD | |
| 244 ></TR | |
| 245 ></TABLE | |
| 246 ></DIV | |
| 247 ></BODY | |
| 248 ></HTML | |
| 249 > |