Mercurial > sdl-ios-xcode
annotate docs/html/sdljoystickgetball.html @ 693:6c119628180d
Date: Sat, 16 Aug 2003 16:22:56 +0300
From: "Mike Gorchak"
Subject: Package building for QNX6
I'm just completed the package description file for QNX6 - qpg, it is like a\
.spec files for Linux. Please place SDL.qpg.in file in the root of the proj\
ect, where .spec file is placed. And sdl12qpg.diff - just adding the SDL.qpg\
.in. The same for the SDL_image. I'm planning to add .qpg files creation for\
all SDL* projects.
As for shared library building for QNX6. It is very hard to improve the exis\
ting libtool code to support QNX shared libraries. Much easyiest is to remov\
e libtool.m4 code from the acinclude.m4 for those persons, who building shar\
ed libraries for QNX6. I'm described all what they need to do with .so under\
QNX6 in the README.QNX file. And 90% of people used the precompiled librari\
es, so I think it is not big problem :)
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 23 Aug 2003 23:25:46 +0000 |
| parents | e5bc29de3f0a |
| children | 355632dca928 |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >SDL_JoystickGetBall</TITLE | |
| 5 ><META | |
| 6 NAME="GENERATOR" | |
|
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7 CONTENT="Modular DocBook HTML Stylesheet Version 1.64 |
| 0 | 8 "><LINK |
| 9 REL="HOME" | |
| 10 TITLE="SDL Library Documentation" | |
| 11 HREF="index.html"><LINK | |
| 12 REL="UP" | |
| 13 TITLE="Joystick" | |
| 14 HREF="joystick.html"><LINK | |
| 15 REL="PREVIOUS" | |
| 16 TITLE="SDL_JoystickGetButton" | |
| 17 HREF="sdljoystickgetbutton.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="SDL_JoystickClose" | |
| 20 HREF="sdljoystickclose.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 | |
| 31 WIDTH="100%" | |
| 32 BORDER="0" | |
| 33 CELLPADDING="0" | |
| 34 CELLSPACING="0" | |
| 35 ><TR | |
| 36 ><TH | |
| 37 COLSPAN="3" | |
| 38 ALIGN="center" | |
| 39 >SDL Library Documentation</TH | |
| 40 ></TR | |
| 41 ><TR | |
| 42 ><TD | |
| 43 WIDTH="10%" | |
| 44 ALIGN="left" | |
| 45 VALIGN="bottom" | |
| 46 ><A | |
| 47 HREF="sdljoystickgetbutton.html" | |
| 48 >Prev</A | |
| 49 ></TD | |
| 50 ><TD | |
| 51 WIDTH="80%" | |
| 52 ALIGN="center" | |
| 53 VALIGN="bottom" | |
| 54 ></TD | |
| 55 ><TD | |
| 56 WIDTH="10%" | |
| 57 ALIGN="right" | |
| 58 VALIGN="bottom" | |
| 59 ><A | |
| 60 HREF="sdljoystickclose.html" | |
| 61 >Next</A | |
| 62 ></TD | |
| 63 ></TR | |
| 64 ></TABLE | |
| 65 ><HR | |
| 66 ALIGN="LEFT" | |
| 67 WIDTH="100%"></DIV | |
| 68 ><H1 | |
| 69 ><A | |
| 70 NAME="SDLJOYSTICKGETBALL" | |
| 71 >SDL_JoystickGetBall</A | |
| 72 ></H1 | |
| 73 ><DIV | |
| 74 CLASS="REFNAMEDIV" | |
| 75 ><A | |
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76 NAME="AEN6045" |
| 0 | 77 ></A |
| 78 ><H2 | |
| 79 >Name</H2 | |
| 80 >SDL_JoystickGetBall -- Get relative trackball motion</DIV | |
| 81 ><DIV | |
| 82 CLASS="REFSYNOPSISDIV" | |
| 83 ><A | |
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84 NAME="AEN6048" |
| 0 | 85 ></A |
| 86 ><H2 | |
| 87 >Synopsis</H2 | |
| 88 ><DIV | |
| 89 CLASS="FUNCSYNOPSIS" | |
| 90 ><A | |
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91 NAME="AEN6049" |
| 0 | 92 ></A |
| 93 ><P | |
| 94 ></P | |
| 95 ><PRE | |
| 96 CLASS="FUNCSYNOPSISINFO" | |
| 97 >#include "SDL.h"</PRE | |
| 98 ><P | |
| 99 ><CODE | |
| 100 ><CODE | |
| 101 CLASS="FUNCDEF" | |
| 102 >int <B | |
| 103 CLASS="FSFUNC" | |
| 104 >SDL_JoystickGetBall</B | |
| 105 ></CODE | |
| 106 >(SDL_Joystick *joystick, int ball, int *dx, int *dy);</CODE | |
| 107 ></P | |
| 108 ><P | |
| 109 ></P | |
| 110 ></DIV | |
| 111 ></DIV | |
| 112 ><DIV | |
| 113 CLASS="REFSECT1" | |
| 114 ><A | |
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115 NAME="AEN6055" |
| 0 | 116 ></A |
| 117 ><H2 | |
| 118 >Description</H2 | |
| 119 ><P | |
| 120 >Get the <TT | |
| 121 CLASS="PARAMETER" | |
| 122 ><I | |
| 123 >ball</I | |
| 124 ></TT | |
| 125 > axis change.</P | |
| 126 ><P | |
| 127 >Trackballs can only return relative motion since the last call to <TT | |
| 128 CLASS="FUNCTION" | |
| 129 >SDL_JoystickGetBall</TT | |
| 130 >, these motion deltas a placed into <TT | |
| 131 CLASS="PARAMETER" | |
| 132 ><I | |
| 133 >dx</I | |
| 134 ></TT | |
| 135 > and <TT | |
| 136 CLASS="PARAMETER" | |
| 137 ><I | |
| 138 >dy</I | |
| 139 ></TT | |
| 140 >.</P | |
| 141 ></DIV | |
| 142 ><DIV | |
| 143 CLASS="REFSECT1" | |
| 144 ><A | |
|
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145 NAME="AEN6063" |
| 0 | 146 ></A |
| 147 ><H2 | |
| 148 >Return Value</H2 | |
| 149 ><P | |
| 150 >Returns <SPAN | |
| 151 CLASS="RETURNVALUE" | |
| 152 >0</SPAN | |
| 153 > on success or <SPAN | |
| 154 CLASS="RETURNVALUE" | |
| 155 >-1</SPAN | |
| 156 > on failure</P | |
| 157 ></DIV | |
| 158 ><DIV | |
| 159 CLASS="REFSECT1" | |
| 160 ><A | |
|
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161 NAME="AEN6068" |
| 0 | 162 ></A |
| 163 ><H2 | |
| 164 >Examples</H2 | |
| 165 ><P | |
| 166 ><PRE | |
| 167 CLASS="PROGRAMLISTING" | |
| 168 >int delta_x, delta_y; | |
| 169 SDL_Joystick *joy; | |
| 170 . | |
| 171 . | |
| 172 . | |
| 173 SDL_JoystickUpdate(); | |
| 174 if(SDL_JoystickGetBall(joy, 0, &delta_x, &delta_y)==-1) | |
| 175 printf("TrackBall Read Error!\n"); | |
| 176 printf("Trackball Delta- X:%d, Y:%d\n", delta_x, delta_y);</PRE | |
| 177 ></P | |
| 178 ></DIV | |
| 179 ><DIV | |
| 180 CLASS="REFSECT1" | |
| 181 ><A | |
|
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182 NAME="AEN6072" |
| 0 | 183 ></A |
| 184 ><H2 | |
| 185 >See Also</H2 | |
| 186 ><P | |
| 187 ><A | |
| 188 HREF="sdljoysticknumballs.html" | |
| 189 ><TT | |
| 190 CLASS="FUNCTION" | |
| 191 >SDL_JoystickNumBalls</TT | |
| 192 ></A | |
| 193 ></P | |
| 194 ></DIV | |
| 195 ><DIV | |
| 196 CLASS="NAVFOOTER" | |
| 197 ><HR | |
| 198 ALIGN="LEFT" | |
| 199 WIDTH="100%"><TABLE | |
| 200 WIDTH="100%" | |
| 201 BORDER="0" | |
| 202 CELLPADDING="0" | |
| 203 CELLSPACING="0" | |
| 204 ><TR | |
| 205 ><TD | |
| 206 WIDTH="33%" | |
| 207 ALIGN="left" | |
| 208 VALIGN="top" | |
| 209 ><A | |
| 210 HREF="sdljoystickgetbutton.html" | |
| 211 >Prev</A | |
| 212 ></TD | |
| 213 ><TD | |
| 214 WIDTH="34%" | |
| 215 ALIGN="center" | |
| 216 VALIGN="top" | |
| 217 ><A | |
| 218 HREF="index.html" | |
| 219 >Home</A | |
| 220 ></TD | |
| 221 ><TD | |
| 222 WIDTH="33%" | |
| 223 ALIGN="right" | |
| 224 VALIGN="top" | |
| 225 ><A | |
| 226 HREF="sdljoystickclose.html" | |
| 227 >Next</A | |
| 228 ></TD | |
| 229 ></TR | |
| 230 ><TR | |
| 231 ><TD | |
| 232 WIDTH="33%" | |
| 233 ALIGN="left" | |
| 234 VALIGN="top" | |
| 235 >SDL_JoystickGetButton</TD | |
| 236 ><TD | |
| 237 WIDTH="34%" | |
| 238 ALIGN="center" | |
| 239 VALIGN="top" | |
| 240 ><A | |
| 241 HREF="joystick.html" | |
| 242 >Up</A | |
| 243 ></TD | |
| 244 ><TD | |
| 245 WIDTH="33%" | |
| 246 ALIGN="right" | |
| 247 VALIGN="top" | |
| 248 >SDL_JoystickClose</TD | |
| 249 ></TR | |
| 250 ></TABLE | |
| 251 ></DIV | |
| 252 ></BODY | |
| 253 ></HTML | |
| 254 > |