Mercurial > sdl-ios-xcode
annotate docs/html/general.html @ 896:b56dc586a5ef
Date: Tue, 16 Mar 2004 12:40:33 +0000
From: Alan Swanson
Subject: [SDL] [PATCH] Linux joystick evdev axis count fix
The event device configuration under Linux does not check the returned
ioctl value when reading the axis information. This means extra
undefined axes are returned.
Note, in EV_HandleEvents, the default for case EV_ABS is to return any
axis information which is fine as we have already checked for all valid
absolute axes. No new axes should be returned after opening the device.
(Unless, of course, the evdev allows closing and reassigning a new
device while in use and I can't believe that happens.)
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sun, 16 May 2004 22:48:06 +0000 |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >General</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 Reference" | |
14 HREF="reference.html"><LINK | |
15 REL="PREVIOUS" | |
16 TITLE="SDL Reference" | |
17 HREF="reference.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_Init" | |
20 HREF="sdlinit.html"><META | |
21 NAME="KEYWORD" | |
22 CONTENT="general"><META | |
23 NAME="KEYWORD" | |
24 CONTENT="function"></HEAD | |
25 ><BODY | |
26 CLASS="CHAPTER" | |
27 BGCOLOR="#FFF8DC" | |
28 TEXT="#000000" | |
29 LINK="#0000ee" | |
30 VLINK="#551a8b" | |
31 ALINK="#ff0000" | |
32 ><DIV | |
33 CLASS="NAVHEADER" | |
34 ><TABLE | |
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35 SUMMARY="Header navigation table" |
0 | 36 WIDTH="100%" |
37 BORDER="0" | |
38 CELLPADDING="0" | |
39 CELLSPACING="0" | |
40 ><TR | |
41 ><TH | |
42 COLSPAN="3" | |
43 ALIGN="center" | |
44 >SDL Library Documentation</TH | |
45 ></TR | |
46 ><TR | |
47 ><TD | |
48 WIDTH="10%" | |
49 ALIGN="left" | |
50 VALIGN="bottom" | |
51 ><A | |
52 HREF="reference.html" | |
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53 ACCESSKEY="P" |
0 | 54 >Prev</A |
55 ></TD | |
56 ><TD | |
57 WIDTH="80%" | |
58 ALIGN="center" | |
59 VALIGN="bottom" | |
60 ></TD | |
61 ><TD | |
62 WIDTH="10%" | |
63 ALIGN="right" | |
64 VALIGN="bottom" | |
65 ><A | |
66 HREF="sdlinit.html" | |
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67 ACCESSKEY="N" |
0 | 68 >Next</A |
69 ></TD | |
70 ></TR | |
71 ></TABLE | |
72 ><HR | |
73 ALIGN="LEFT" | |
74 WIDTH="100%"></DIV | |
75 ><DIV | |
76 CLASS="CHAPTER" | |
77 ><H1 | |
78 ><A | |
79 NAME="GENERAL" | |
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80 ></A |
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81 >Chapter 5. General</H1 |
0 | 82 ><DIV |
83 CLASS="TOC" | |
84 ><DL | |
85 ><DT | |
86 ><B | |
87 >Table of Contents</B | |
88 ></DT | |
89 ><DT | |
90 ><A | |
91 HREF="sdlinit.html" | |
92 >SDL_Init</A | |
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93 > -- Initializes SDL</DT |
0 | 94 ><DT |
95 ><A | |
96 HREF="sdlinitsubsystem.html" | |
97 >SDL_InitSubSystem</A | |
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98 > -- Initialize subsystems</DT |
0 | 99 ><DT |
100 ><A | |
101 HREF="sdlquitsubsystem.html" | |
102 >SDL_QuitSubSystem</A | |
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103 > -- Shut down a subsystem</DT |
0 | 104 ><DT |
105 ><A | |
106 HREF="sdlquit.html" | |
107 >SDL_Quit</A | |
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108 > -- Shut down SDL</DT |
0 | 109 ><DT |
110 ><A | |
111 HREF="sdlwasinit.html" | |
112 >SDL_WasInit</A | |
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113 > -- Check which subsystems are initialized</DT |
181
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114 ><DT |
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115 ><A |
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116 HREF="sdlgeterror.html" |
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117 >SDL_GetError</A |
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118 > -- Get SDL error string</DT |
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119 ><DT |
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120 ><A |
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121 HREF="sdlenvvars.html" |
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122 >SDL_envvars</A |
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123 > -- SDL environment variables</DT |
0 | 124 ></DL |
125 ></DIV | |
126 ><P | |
127 >Before SDL can be used in a program it must be initialized with <A | |
128 HREF="sdlinit.html" | |
129 ><TT | |
130 CLASS="FUNCTION" | |
131 >SDL_Init</TT | |
132 ></A | |
133 >. <TT | |
134 CLASS="FUNCTION" | |
135 >SDL_Init</TT | |
136 > initializes all the subsystems that the user requests (video, audio, joystick, timers and/or cdrom). Once SDL is initialized with <TT | |
137 CLASS="FUNCTION" | |
138 >SDL_Init</TT | |
139 > subsystems can be shut down and initialized as needed using <A | |
140 HREF="sdlinitsubsystem.html" | |
141 ><TT | |
142 CLASS="FUNCTION" | |
143 >SDL_InitSubSystem</TT | |
144 ></A | |
145 > and <A | |
146 HREF="sdlquitsubsystem.html" | |
147 ><TT | |
148 CLASS="FUNCTION" | |
149 >SDL_QuitSubSystem</TT | |
150 ></A | |
151 >.</P | |
152 ><P | |
153 >SDL must also be shut down before the program exits to make sure it cleans up correctly. Calling <A | |
154 HREF="sdlquit.html" | |
155 ><TT | |
156 CLASS="FUNCTION" | |
157 >SDL_Quit</TT | |
158 ></A | |
159 > shuts down all subsystems and frees any resources allocated to SDL.</P | |
160 ></DIV | |
161 ><DIV | |
162 CLASS="NAVFOOTER" | |
163 ><HR | |
164 ALIGN="LEFT" | |
165 WIDTH="100%"><TABLE | |
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166 SUMMARY="Footer navigation table" |
0 | 167 WIDTH="100%" |
168 BORDER="0" | |
169 CELLPADDING="0" | |
170 CELLSPACING="0" | |
171 ><TR | |
172 ><TD | |
173 WIDTH="33%" | |
174 ALIGN="left" | |
175 VALIGN="top" | |
176 ><A | |
177 HREF="reference.html" | |
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178 ACCESSKEY="P" |
0 | 179 >Prev</A |
180 ></TD | |
181 ><TD | |
182 WIDTH="34%" | |
183 ALIGN="center" | |
184 VALIGN="top" | |
185 ><A | |
186 HREF="index.html" | |
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187 ACCESSKEY="H" |
0 | 188 >Home</A |
189 ></TD | |
190 ><TD | |
191 WIDTH="33%" | |
192 ALIGN="right" | |
193 VALIGN="top" | |
194 ><A | |
195 HREF="sdlinit.html" | |
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196 ACCESSKEY="N" |
0 | 197 >Next</A |
198 ></TD | |
199 ></TR | |
200 ><TR | |
201 ><TD | |
202 WIDTH="33%" | |
203 ALIGN="left" | |
204 VALIGN="top" | |
205 >SDL Reference</TD | |
206 ><TD | |
207 WIDTH="34%" | |
208 ALIGN="center" | |
209 VALIGN="top" | |
210 ><A | |
211 HREF="reference.html" | |
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212 ACCESSKEY="U" |
0 | 213 >Up</A |
214 ></TD | |
215 ><TD | |
216 WIDTH="33%" | |
217 ALIGN="right" | |
218 VALIGN="top" | |
219 >SDL_Init</TD | |
220 ></TR | |
221 ></TABLE | |
222 ></DIV | |
223 ></BODY | |
224 ></HTML | |
225 > |