Mercurial > sdl-ios-xcode
annotate docs/html/sdljoystickeventstate.html @ 1614:6162b8d921ce
Date: Wed, 29 Mar 2006 17:26:55 +0200 CEST
From: "Fran���is Revol"
Subject: [SDL] BeOS port fix: PrintScreen key crashing
It seems the latest SDL crashes when someone hits the PrtScrn key in
ZETA (BeOS R6), somewhere it gets a negative value as key code (or a
big unsigned maybe ?), and uses it as an index in the keysym table...
I'll investigate the cause for the negative value, but it's always
better to check for bounds correctly when indexing a table. The
attached diff fixes it.
Fran���is Revol
--
Software Architect
yellowTAB GmbH
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Fri, 31 Mar 2006 06:16:20 +0000 |
| parents | 355632dca928 |
| children |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >SDL_JoystickEventState</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_GetAppState" | |
| 17 HREF="sdlgetappstate.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="Joystick" | |
| 20 HREF="joystick.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="sdlgetappstate.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="joystick.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="SDLJOYSTICKEVENTSTATE" | |
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74 ></A |
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75 >SDL_JoystickEventState</H1 |
| 0 | 76 ><DIV |
| 77 CLASS="REFNAMEDIV" | |
| 78 ><A | |
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79 NAME="AEN5969" |
| 0 | 80 ></A |
| 81 ><H2 | |
| 82 >Name</H2 | |
| 83 >SDL_JoystickEventState -- Enable/disable joystick event polling</DIV | |
| 84 ><DIV | |
| 85 CLASS="REFSYNOPSISDIV" | |
| 86 ><A | |
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87 NAME="AEN5972" |
| 0 | 88 ></A |
| 89 ><H2 | |
| 90 >Synopsis</H2 | |
| 91 ><DIV | |
| 92 CLASS="FUNCSYNOPSIS" | |
| 93 ><A | |
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94 NAME="AEN5973" |
| 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 >int <B | |
| 106 CLASS="FSFUNC" | |
| 107 >SDL_JoystickEventState</B | |
| 108 ></CODE | |
| 109 >(int state);</CODE | |
| 110 ></P | |
| 111 ><P | |
| 112 ></P | |
| 113 ></DIV | |
| 114 ></DIV | |
| 115 ><DIV | |
| 116 CLASS="REFSECT1" | |
| 117 ><A | |
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118 NAME="AEN5979" |
| 0 | 119 ></A |
| 120 ><H2 | |
| 121 >Description</H2 | |
| 122 ><P | |
| 123 >This function is used to enable or disable joystick event processing. With joystick event processing disabled you will have to update joystick states with <A | |
| 124 HREF="sdljoystickupdate.html" | |
| 125 ><TT | |
| 126 CLASS="FUNCTION" | |
| 127 >SDL_JoystickUpdate</TT | |
| 128 ></A | |
| 129 > and read the joystick information manually. <TT | |
| 130 CLASS="PARAMETER" | |
| 131 ><I | |
| 132 >state</I | |
| 133 ></TT | |
| 134 > is either <TT | |
| 135 CLASS="LITERAL" | |
| 136 >SDL_QUERY</TT | |
| 137 >, <TT | |
| 138 CLASS="LITERAL" | |
| 139 >SDL_ENABLE</TT | |
| 140 > or <TT | |
| 141 CLASS="LITERAL" | |
| 142 >SDL_IGNORE</TT | |
| 143 >.</P | |
| 144 ><DIV | |
| 145 CLASS="NOTE" | |
| 146 ><BLOCKQUOTE | |
| 147 CLASS="NOTE" | |
| 148 ><P | |
| 149 ><B | |
| 150 >Note: </B | |
| 151 >Joystick event handling is prefered</P | |
| 152 ></BLOCKQUOTE | |
| 153 ></DIV | |
| 154 ></DIV | |
| 155 ><DIV | |
| 156 CLASS="REFSECT1" | |
| 157 ><A | |
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158 NAME="AEN5990" |
| 0 | 159 ></A |
| 160 ><H2 | |
| 161 >Return Value</H2 | |
| 162 ><P | |
| 163 >If <TT | |
| 164 CLASS="PARAMETER" | |
| 165 ><I | |
| 166 >state</I | |
| 167 ></TT | |
| 168 > is <TT | |
| 169 CLASS="LITERAL" | |
| 170 >SDL_QUERY</TT | |
| 171 > then the current state is returned, otherwise the new processing <TT | |
| 172 CLASS="PARAMETER" | |
| 173 ><I | |
| 174 >state</I | |
| 175 ></TT | |
| 176 > is returned.</P | |
| 177 ></DIV | |
| 178 ><DIV | |
| 179 CLASS="REFSECT1" | |
| 180 ><A | |
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181 NAME="AEN5996" |
| 0 | 182 ></A |
| 183 ><H2 | |
| 184 >See Also</H2 | |
| 185 ><P | |
| 186 ><A | |
| 187 HREF="joystick.html" | |
| 188 >SDL Joystick Functions</A | |
| 189 >, | |
| 190 <A | |
| 191 HREF="sdljoystickupdate.html" | |
| 192 ><TT | |
| 193 CLASS="FUNCTION" | |
| 194 >SDL_JoystickUpdate</TT | |
| 195 ></A | |
| 196 >, | |
| 197 <A | |
| 198 HREF="sdljoyaxisevent.html" | |
| 199 ><SPAN | |
| 200 CLASS="STRUCTNAME" | |
| 201 >SDL_JoyAxisEvent</SPAN | |
| 202 ></A | |
| 203 >, | |
| 204 <A | |
| 205 HREF="sdljoyballevent.html" | |
| 206 ><SPAN | |
| 207 CLASS="STRUCTNAME" | |
| 208 >SDL_JoyBallEvent</SPAN | |
| 209 ></A | |
| 210 >, | |
| 211 <A | |
| 212 HREF="sdljoybuttonevent.html" | |
| 213 ><SPAN | |
| 214 CLASS="STRUCTNAME" | |
| 215 >SDL_JoyButtonEvent</SPAN | |
| 216 ></A | |
| 217 >, | |
| 218 <A | |
| 219 HREF="sdljoyhatevent.html" | |
| 220 ><SPAN | |
| 221 CLASS="STRUCTNAME" | |
| 222 >SDL_JoyHatEvent</SPAN | |
| 223 ></A | |
| 224 ></P | |
| 225 ></DIV | |
| 226 ><DIV | |
| 227 CLASS="NAVFOOTER" | |
| 228 ><HR | |
| 229 ALIGN="LEFT" | |
| 230 WIDTH="100%"><TABLE | |
|
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231 SUMMARY="Footer navigation table" |
| 0 | 232 WIDTH="100%" |
| 233 BORDER="0" | |
| 234 CELLPADDING="0" | |
| 235 CELLSPACING="0" | |
| 236 ><TR | |
| 237 ><TD | |
| 238 WIDTH="33%" | |
| 239 ALIGN="left" | |
| 240 VALIGN="top" | |
| 241 ><A | |
| 242 HREF="sdlgetappstate.html" | |
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parents:
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243 ACCESSKEY="P" |
| 0 | 244 >Prev</A |
| 245 ></TD | |
| 246 ><TD | |
| 247 WIDTH="34%" | |
| 248 ALIGN="center" | |
| 249 VALIGN="top" | |
| 250 ><A | |
| 251 HREF="index.html" | |
|
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parents:
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252 ACCESSKEY="H" |
| 0 | 253 >Home</A |
| 254 ></TD | |
| 255 ><TD | |
| 256 WIDTH="33%" | |
| 257 ALIGN="right" | |
| 258 VALIGN="top" | |
| 259 ><A | |
| 260 HREF="joystick.html" | |
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261 ACCESSKEY="N" |
| 0 | 262 >Next</A |
| 263 ></TD | |
| 264 ></TR | |
| 265 ><TR | |
| 266 ><TD | |
| 267 WIDTH="33%" | |
| 268 ALIGN="left" | |
| 269 VALIGN="top" | |
| 270 >SDL_GetAppState</TD | |
| 271 ><TD | |
| 272 WIDTH="34%" | |
| 273 ALIGN="center" | |
| 274 VALIGN="top" | |
| 275 ><A | |
| 276 HREF="eventfunctions.html" | |
|
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277 ACCESSKEY="U" |
| 0 | 278 >Up</A |
| 279 ></TD | |
| 280 ><TD | |
| 281 WIDTH="33%" | |
| 282 ALIGN="right" | |
| 283 VALIGN="top" | |
| 284 >Joystick</TD | |
| 285 ></TR | |
| 286 ></TABLE | |
| 287 ></DIV | |
| 288 ></BODY | |
| 289 ></HTML | |
| 290 > |