Mercurial > sdl-ios-xcode
annotate docs/html/sdlpollevent.html @ 983:7f08bd66f1ca
Date: Fri, 19 Nov 2004 06:23:53 -0800 (PST)
From: Eric Wing
Subject: OS X Mouse inversion problem fix (again)
Here's yet another patch for the OS X mouse inversion
problem. This should fix the problem once and for all.
I know I've said this before, but *This time for
sure!* :)
If you recall, my last patch broke the non-OpenGL
windowed code and caused the inversion to occur there
instead. Max submitted a patch that partially reverted
the changes back which included the os version hack
which is currently the most recent CVS.
Aaron Sullivan identified and reported to the mailing
list the other day, that the last partial regression
of the code broke OS X 10.2. Looking over the results,
I'm thinking that I was slightly more successful than
I thought at unifying the code. I think I was trying
to unify the code base for OpenGL and non-OpenGL
windowed modes for all versions of the OS. It looks
like I failed at at unifying the OpenGL and non-OpenGL
code, but I did succeed at unifying the OS versions.
Thus, we no longer need the hack for the OS version
checks. The partial regression still included an OS
check which is what broke things for < 10.3.
Attached is the patch for SDL_QuartzWM.m. It basically
is a half-line change that removes one of the two
checks that decides if the mouse coordinates need to
be inverted, i.e:
if (system_version >= 0x1030 &&
(SDL_VideoSurface->flags & SDL_OPENGL) )
becomes this:
if(SDL_VideoSurface->flags & SDL_OPENGL)
With Aaron's outstanding help, we have collectively
tested:
windowed OpenGL
windowed non-OpenGL
fullscreen OpenGL
fullscreen non-OpenGL
under OS X 10.2 (Jaguar), 10.3 (Panther), and 10.4
(Tiger).
We don't have access to 10.0 or 10.1, but since the
original problem didn't materialize until 10.3, I'm
hopeful that testing 10.2 is sufficient. And now that
the code is uniform, I'm also hoping we'll be safe
moving forward to deal with future revisions of the OS
with this issue.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sun, 21 Nov 2004 00:57:47 +0000 |
parents | 355632dca928 |
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rev | line source |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_PollEvent</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_PeepEvents" | |
17 HREF="sdlpeepevents.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_WaitEvent" | |
20 HREF="sdlwaitevent.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="sdlpeepevents.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="sdlwaitevent.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="SDLPOLLEVENT" | |
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74 ></A |
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75 >SDL_PollEvent</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN5472" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_PollEvent -- Polls for currently pending events.</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN5475" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN5476" |
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_PollEvent</B | |
108 ></CODE | |
109 >(SDL_Event *event);</CODE | |
110 ></P | |
111 ><P | |
112 ></P | |
113 ></DIV | |
114 ></DIV | |
115 ><DIV | |
116 CLASS="REFSECT1" | |
117 ><A | |
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118 NAME="AEN5482" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
123 >Polls for currently pending events, and returns <SPAN | |
124 CLASS="RETURNVALUE" | |
125 >1</SPAN | |
126 > | |
127 if there are any pending events, or <SPAN | |
128 CLASS="RETURNVALUE" | |
129 >0</SPAN | |
130 > if there | |
131 are none available. </P | |
132 ><P | |
133 >If <TT | |
134 CLASS="PARAMETER" | |
135 ><I | |
136 >event</I | |
137 ></TT | |
138 > is not <TT | |
139 CLASS="LITERAL" | |
140 >NULL</TT | |
141 >, the next | |
142 event is removed from the queue and stored in that area.</P | |
143 ></DIV | |
144 ><DIV | |
145 CLASS="REFSECT1" | |
146 ><A | |
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147 NAME="AEN5490" |
0 | 148 ></A |
149 ><H2 | |
150 >Examples</H2 | |
151 ><P | |
152 ><PRE | |
153 CLASS="PROGRAMLISTING" | |
154 >SDL_Event event; /* Event structure */ | |
155 | |
156 . | |
157 . | |
158 . | |
159 /* Check for events */ | |
160 while(SDL_PollEvent(&event)){ /* Loop until there are no events left on the queue */ | |
161 switch(event.type){ /* Process the appropiate event type */ | |
162 case SDL_KEYDOWN: /* Handle a KEYDOWN event */ | |
163 printf("Oh! Key press\n"); | |
164 break; | |
165 case SDL_MOUSEMOTION: | |
166 . | |
167 . | |
168 . | |
169 default: /* Report an unhandled event */ | |
170 printf("I don't know what this event is!\n"); | |
171 } | |
172 }</PRE | |
173 ></P | |
174 ></DIV | |
175 ><DIV | |
176 CLASS="REFSECT1" | |
177 ><A | |
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178 NAME="AEN5494" |
0 | 179 ></A |
180 ><H2 | |
181 >See Also</H2 | |
182 ><P | |
183 ><A | |
184 HREF="sdlevent.html" | |
185 ><SPAN | |
186 CLASS="STRUCTNAME" | |
187 >SDL_Event</SPAN | |
188 ></A | |
189 >, | |
190 <A | |
191 HREF="sdlwaitevent.html" | |
192 ><TT | |
193 CLASS="FUNCTION" | |
194 >SDL_WaitEvent</TT | |
195 ></A | |
196 >, | |
197 <A | |
198 HREF="sdlpeepevents.html" | |
199 ><TT | |
200 CLASS="FUNCTION" | |
201 >SDL_PeepEvents</TT | |
202 ></A | |
203 ></P | |
204 ></DIV | |
205 ><DIV | |
206 CLASS="NAVFOOTER" | |
207 ><HR | |
208 ALIGN="LEFT" | |
209 WIDTH="100%"><TABLE | |
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210 SUMMARY="Footer navigation table" |
0 | 211 WIDTH="100%" |
212 BORDER="0" | |
213 CELLPADDING="0" | |
214 CELLSPACING="0" | |
215 ><TR | |
216 ><TD | |
217 WIDTH="33%" | |
218 ALIGN="left" | |
219 VALIGN="top" | |
220 ><A | |
221 HREF="sdlpeepevents.html" | |
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222 ACCESSKEY="P" |
0 | 223 >Prev</A |
224 ></TD | |
225 ><TD | |
226 WIDTH="34%" | |
227 ALIGN="center" | |
228 VALIGN="top" | |
229 ><A | |
230 HREF="index.html" | |
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231 ACCESSKEY="H" |
0 | 232 >Home</A |
233 ></TD | |
234 ><TD | |
235 WIDTH="33%" | |
236 ALIGN="right" | |
237 VALIGN="top" | |
238 ><A | |
239 HREF="sdlwaitevent.html" | |
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240 ACCESSKEY="N" |
0 | 241 >Next</A |
242 ></TD | |
243 ></TR | |
244 ><TR | |
245 ><TD | |
246 WIDTH="33%" | |
247 ALIGN="left" | |
248 VALIGN="top" | |
249 >SDL_PeepEvents</TD | |
250 ><TD | |
251 WIDTH="34%" | |
252 ALIGN="center" | |
253 VALIGN="top" | |
254 ><A | |
255 HREF="eventfunctions.html" | |
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256 ACCESSKEY="U" |
0 | 257 >Up</A |
258 ></TD | |
259 ><TD | |
260 WIDTH="33%" | |
261 ALIGN="right" | |
262 VALIGN="top" | |
263 >SDL_WaitEvent</TD | |
264 ></TR | |
265 ></TABLE | |
266 ></DIV | |
267 ></BODY | |
268 ></HTML | |
269 > |