Mercurial > sdl-ios-xcode
annotate docs/html/sdlcdtrack.html @ 615:7ec821f3cbd0
Date: Thu, 17 Apr 2003 23:27:34 -0400
From: Darrell Walisser
Subject: Yet another OS X cursor bug
The synopsis:
1. Call SDL_ShowCursor(0);
2. Call SDL_SetVideoMode();
3. Call SDL_GetEvent();
3. Call SDL_ShowCursor(1);
The result: Sometimes the cursor doesn't come back! Ack! Oddly enough,
it does come back when mousing over the dock or clicking in the menu
bar. But that's besides the point.
The reason why this is happening is a flaw in the handling of
activation/deactivation events. The short explanation is that the
HideCursor() and ShowCursor() calls must be balanced, but if the cursor
was initially hidden, HideCursor() was called again on the activate
event - so now the next ShowCursor() fails (as does the next, and the
next, for some reason).
So, here's the patch. All it does is keep track of the
HideCursor()/ShowCursor() calls so that they will always be balanced.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sun, 20 Apr 2003 05:41:16 +0000 |
parents | e5bc29de3f0a |
children | 355632dca928 |
rev | line source |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_CDtrack</TITLE | |
5 ><META | |
6 NAME="GENERATOR" | |
55
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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="CD-ROM" | |
14 HREF="cdrom.html"><LINK | |
15 REL="PREVIOUS" | |
16 TITLE="SDL_CD" | |
17 HREF="sdlcd.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="Multi-threaded Programming" | |
20 HREF="thread.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="sdlcd.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="thread.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="SDLCDTRACK" | |
71 >SDL_CDtrack</A | |
72 ></H1 | |
73 ><DIV | |
74 CLASS="REFNAMEDIV" | |
75 ><A | |
181
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76 NAME="AEN7240" |
0 | 77 ></A |
78 ><H2 | |
79 >Name</H2 | |
80 >SDL_CDtrack -- CD Track Information Structure</DIV | |
81 ><DIV | |
82 CLASS="REFSECT1" | |
83 ><A | |
181
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84 NAME="AEN7243" |
0 | 85 ></A |
86 ><H2 | |
87 >Structure Definition</H2 | |
88 ><PRE | |
89 CLASS="PROGRAMLISTING" | |
90 >typedef struct{ | |
91 Uint8 id; | |
92 Uint8 type; | |
93 Uint32 length; | |
94 Uint32 offset; | |
95 } SDL_CDtrack;</PRE | |
96 ></DIV | |
97 ><DIV | |
98 CLASS="REFSECT1" | |
99 ><A | |
181
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100 NAME="AEN7246" |
0 | 101 ></A |
102 ><H2 | |
103 >Structure Data</H2 | |
104 ><DIV | |
105 CLASS="INFORMALTABLE" | |
106 ><A | |
181
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107 NAME="AEN7248" |
0 | 108 ></A |
109 ><P | |
110 ></P | |
111 ><TABLE | |
112 BORDER="0" | |
113 CLASS="CALSTABLE" | |
114 ><TBODY | |
115 ><TR | |
116 ><TD | |
117 ALIGN="LEFT" | |
118 VALIGN="TOP" | |
119 ><TT | |
120 CLASS="STRUCTFIELD" | |
121 ><I | |
122 >id</I | |
123 ></TT | |
124 ></TD | |
125 ><TD | |
126 ALIGN="LEFT" | |
127 VALIGN="TOP" | |
128 >Track number (0-99)</TD | |
129 ></TR | |
130 ><TR | |
131 ><TD | |
132 ALIGN="LEFT" | |
133 VALIGN="TOP" | |
134 ><TT | |
135 CLASS="STRUCTFIELD" | |
136 ><I | |
137 >type</I | |
138 ></TT | |
139 ></TD | |
140 ><TD | |
141 ALIGN="LEFT" | |
142 VALIGN="TOP" | |
143 ><TT | |
144 CLASS="LITERAL" | |
145 >SDL_AUDIO_TRACK</TT | |
146 > or <TT | |
147 CLASS="LITERAL" | |
148 >SDL_DATA_TRACK</TT | |
149 ></TD | |
150 ></TR | |
151 ><TR | |
152 ><TD | |
153 ALIGN="LEFT" | |
154 VALIGN="TOP" | |
155 ><TT | |
156 CLASS="STRUCTFIELD" | |
157 ><I | |
158 >length</I | |
159 ></TT | |
160 ></TD | |
161 ><TD | |
162 ALIGN="LEFT" | |
163 VALIGN="TOP" | |
164 >Length, in frames, of this track</TD | |
165 ></TR | |
166 ><TR | |
167 ><TD | |
168 ALIGN="LEFT" | |
169 VALIGN="TOP" | |
170 ><TT | |
171 CLASS="STRUCTFIELD" | |
172 ><I | |
173 >offset</I | |
174 ></TT | |
175 ></TD | |
176 ><TD | |
177 ALIGN="LEFT" | |
178 VALIGN="TOP" | |
179 >Frame offset to the beginning of this track</TD | |
180 ></TR | |
181 ></TBODY | |
182 ></TABLE | |
183 ><P | |
184 ></P | |
185 ></DIV | |
186 ></DIV | |
187 ><DIV | |
188 CLASS="REFSECT1" | |
189 ><A | |
181
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190 NAME="AEN7269" |
0 | 191 ></A |
192 ><H2 | |
193 >Description</H2 | |
194 ><P | |
195 ><SPAN | |
196 CLASS="STRUCTNAME" | |
197 >SDL_CDtrack</SPAN | |
198 > stores data on each track on a CD, its fields should be pretty self explainatory. It is a member a the <A | |
199 HREF="sdlcd.html" | |
200 ><SPAN | |
201 CLASS="STRUCTNAME" | |
202 >SDL_CD</SPAN | |
203 ></A | |
204 > structure.</P | |
205 ><DIV | |
206 CLASS="NOTE" | |
207 ><BLOCKQUOTE | |
208 CLASS="NOTE" | |
209 ><P | |
210 ><B | |
211 >Note: </B | |
212 >Frames can be converted to standard timings. There are <TT | |
213 CLASS="LITERAL" | |
214 >CD_FPS</TT | |
215 > frames per second, so <SPAN | |
216 CLASS="STRUCTNAME" | |
217 >SDL_CDtrack</SPAN | |
218 >.<TT | |
219 CLASS="STRUCTFIELD" | |
220 ><I | |
221 >length</I | |
222 ></TT | |
223 >/<TT | |
224 CLASS="LITERAL" | |
225 >CD_FPS</TT | |
226 >=length_in_seconds.</P | |
227 ></BLOCKQUOTE | |
228 ></DIV | |
229 ></DIV | |
230 ><DIV | |
231 CLASS="REFSECT1" | |
232 ><A | |
181
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233 NAME="AEN7281" |
0 | 234 ></A |
235 ><H2 | |
236 >See Also</H2 | |
237 ><P | |
238 ><A | |
239 HREF="sdlcd.html" | |
240 ><SPAN | |
241 CLASS="STRUCTNAME" | |
242 >SDL_CD</SPAN | |
243 ></A | |
244 ></P | |
245 ></DIV | |
246 ><DIV | |
247 CLASS="NAVFOOTER" | |
248 ><HR | |
249 ALIGN="LEFT" | |
250 WIDTH="100%"><TABLE | |
251 WIDTH="100%" | |
252 BORDER="0" | |
253 CELLPADDING="0" | |
254 CELLSPACING="0" | |
255 ><TR | |
256 ><TD | |
257 WIDTH="33%" | |
258 ALIGN="left" | |
259 VALIGN="top" | |
260 ><A | |
261 HREF="sdlcd.html" | |
262 >Prev</A | |
263 ></TD | |
264 ><TD | |
265 WIDTH="34%" | |
266 ALIGN="center" | |
267 VALIGN="top" | |
268 ><A | |
269 HREF="index.html" | |
270 >Home</A | |
271 ></TD | |
272 ><TD | |
273 WIDTH="33%" | |
274 ALIGN="right" | |
275 VALIGN="top" | |
276 ><A | |
277 HREF="thread.html" | |
278 >Next</A | |
279 ></TD | |
280 ></TR | |
281 ><TR | |
282 ><TD | |
283 WIDTH="33%" | |
284 ALIGN="left" | |
285 VALIGN="top" | |
286 >SDL_CD</TD | |
287 ><TD | |
288 WIDTH="34%" | |
289 ALIGN="center" | |
290 VALIGN="top" | |
291 ><A | |
292 HREF="cdrom.html" | |
293 >Up</A | |
294 ></TD | |
295 ><TD | |
296 WIDTH="33%" | |
297 ALIGN="right" | |
298 VALIGN="top" | |
299 >Multi-threaded Programming</TD | |
300 ></TR | |
301 ></TABLE | |
302 ></DIV | |
303 ></BODY | |
304 ></HTML | |
305 > |