Mercurial > sdl-ios-xcode
annotate docs/html/sdlsettimer.html @ 3168:6338b7f2d024
Hi,
I have prepared a set of patches to readd WindowsCE support to SDL 1.3.
I've created a new GAPI/Rawframebuffer and a DirectDraw renderer.
Both renderers are work in progress and there are several unimplemented
cases. (Notably
RenderLine/RenderPoint/RenderFill/QueryTexturePixels/UpdateTexture and
texture blending )
Nevertheless I am successfully using these renderers together with the
SDL software renderer. (On most devices the SDL software renderer will
be much faster as there are only badly optimized vendor drivers available)
I send these patches now in this unpolished state because there seems to
be some interest in win ce and someone has to start supporting SDL 1.3
Now on to the patches:
wince_events_window_fixes.patch
fixes some wince incompatibilities and adds fullscreen support via
SHFullScreen. NOTE: This patch shouldn't have any side effects on
Windows, but I have NOT tested it on Windows, so please double-check.
This patch doesn't dependent on the following ones.
wince_renderers_system.patch
This patch does all necessary modifications to the SDL system.
- it adds the renderers to the configure system
- it adds the renderers to win32video
SDL_ceddrawrender.c
SDL_ceddrawrender.h
SDL_gapirender_c.h
SDL_gapirender.c
SDL_gapirender.h
these files add the new render drivers and should be placed in
src/video/win32
Some notes to people who want to test this:
- I have only compiled sdl with ming32ce, so the VisualC files are not
up to date
- As mingw32ce has no ddraw.h this file must be taken from the MS SDK
and modified to work with gcc
- I had to modify line 2611 in configure.in to
EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lcoredll -lcommctrl -lmmtimer
-Wl,--image-base -Wl,0x10000"
otherwise GetCPinfo wouldn't link. If someone knows whats causing this
I'd be happy to hear about it.
It would be great if these patches could make their way into SVN as this
would make collaboration much much easier.
I'm out of office for the next week and therefore will be unavailable
via email.
Regards
Stefan
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sun, 07 Jun 2009 02:44:46 +0000 |
parents | 355632dca928 |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_SetTimer</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="Time" | |
14 HREF="time.html"><LINK | |
15 REL="PREVIOUS" | |
16 TITLE="SDL_RemoveTimer" | |
17 HREF="sdlremovetimer.html"></HEAD | |
18 ><BODY | |
19 CLASS="REFENTRY" | |
20 BGCOLOR="#FFF8DC" | |
21 TEXT="#000000" | |
22 LINK="#0000ee" | |
23 VLINK="#551a8b" | |
24 ALINK="#ff0000" | |
25 ><DIV | |
26 CLASS="NAVHEADER" | |
27 ><TABLE | |
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28 SUMMARY="Header navigation table" |
0 | 29 WIDTH="100%" |
30 BORDER="0" | |
31 CELLPADDING="0" | |
32 CELLSPACING="0" | |
33 ><TR | |
34 ><TH | |
35 COLSPAN="3" | |
36 ALIGN="center" | |
37 >SDL Library Documentation</TH | |
38 ></TR | |
39 ><TR | |
40 ><TD | |
41 WIDTH="10%" | |
42 ALIGN="left" | |
43 VALIGN="bottom" | |
44 ><A | |
45 HREF="sdlremovetimer.html" | |
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46 ACCESSKEY="P" |
0 | 47 >Prev</A |
48 ></TD | |
49 ><TD | |
50 WIDTH="80%" | |
51 ALIGN="center" | |
52 VALIGN="bottom" | |
53 ></TD | |
54 ><TD | |
55 WIDTH="10%" | |
56 ALIGN="right" | |
57 VALIGN="bottom" | |
58 > </TD | |
59 ></TR | |
60 ></TABLE | |
61 ><HR | |
62 ALIGN="LEFT" | |
63 WIDTH="100%"></DIV | |
64 ><H1 | |
65 ><A | |
66 NAME="SDLSETTIMER" | |
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67 ></A |
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68 >SDL_SetTimer</H1 |
0 | 69 ><DIV |
70 CLASS="REFNAMEDIV" | |
71 ><A | |
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72 NAME="AEN8557" |
0 | 73 ></A |
74 ><H2 | |
75 >Name</H2 | |
76 >SDL_SetTimer -- Set a callback to run after the specified number of milliseconds has | |
77 elapsed.</DIV | |
78 ><DIV | |
79 CLASS="REFSYNOPSISDIV" | |
80 ><A | |
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81 NAME="AEN8560" |
0 | 82 ></A |
83 ><H2 | |
84 >Synopsis</H2 | |
85 ><DIV | |
86 CLASS="FUNCSYNOPSIS" | |
87 ><A | |
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88 NAME="AEN8561" |
0 | 89 ></A |
90 ><P | |
91 ></P | |
92 ><PRE | |
93 CLASS="FUNCSYNOPSISINFO" | |
94 >#include "SDL.h"</PRE | |
95 ><P | |
96 ><CODE | |
97 ><CODE | |
98 CLASS="FUNCDEF" | |
99 >int <B | |
100 CLASS="FSFUNC" | |
101 >SDL_SetTimer</B | |
102 ></CODE | |
103 >(Uint32 interval, SDL_TimerCallback callback);</CODE | |
104 ></P | |
105 ><P | |
106 ></P | |
107 ></DIV | |
108 ></DIV | |
109 ><DIV | |
110 CLASS="REFSECT1" | |
111 ><A | |
112 NAME="SDLTIMERCALLBACK" | |
113 ></A | |
114 ><H2 | |
115 >Callback</H2 | |
116 ><P | |
117 >/* Function prototype for the timer callback function */ | |
118 typedef Uint32 (*SDL_TimerCallback)(Uint32 interval);</P | |
119 ></DIV | |
120 ><DIV | |
121 CLASS="REFSECT1" | |
122 ><A | |
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123 NAME="AEN8570" |
0 | 124 ></A |
125 ><H2 | |
126 >Description</H2 | |
127 ><P | |
128 >Set a callback to run after the specified number of milliseconds has | |
129 elapsed. The callback function is passed the current timer interval | |
130 and returns the next timer interval. If the returned value is the | |
131 same as the one passed in, the periodic alarm continues, otherwise a | |
132 new alarm is scheduled.</P | |
133 ><P | |
134 >To cancel a currently running timer, call | |
135 <TT | |
136 CLASS="FUNCTION" | |
137 >SDL_SetTimer(0, NULL);</TT | |
138 ></P | |
139 ><P | |
140 >The timer callback function may run in a different thread than your | |
141 main constant, and so shouldn't call any functions from within itself.</P | |
142 ><P | |
143 >The maximum resolution of this timer is 10 ms, which means that if | |
144 you request a 16 ms timer, your callback will run approximately 20 ms | |
145 later on an unloaded system. If you wanted to set a flag signaling | |
146 a frame update at 30 frames per second (every 33 ms), you might set a | |
147 timer for 30 ms (see example below).</P | |
148 ><P | |
149 >If you use this function, you need to pass <TT | |
150 CLASS="LITERAL" | |
151 >SDL_INIT_TIMER</TT | |
152 > | |
153 to <TT | |
154 CLASS="FUNCTION" | |
155 >SDL_Init()</TT | |
156 >.</P | |
157 ><DIV | |
158 CLASS="NOTE" | |
159 ><BLOCKQUOTE | |
160 CLASS="NOTE" | |
161 ><P | |
162 ><B | |
163 >Note: </B | |
55
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164 >This function is kept for compatibility but has been superseded |
0 | 165 by the new timer functions |
166 <A | |
167 HREF="sdladdtimer.html" | |
168 >SDL_AddTimer</A | |
169 > and | |
170 <A | |
171 HREF="sdlremovetimer.html" | |
172 >SDL_RemoveTimer</A | |
173 > which support | |
174 multiple timers.</P | |
175 ></BLOCKQUOTE | |
176 ></DIV | |
177 ></DIV | |
178 ><DIV | |
179 CLASS="REFSECT1" | |
180 ><A | |
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181 NAME="AEN8584" |
0 | 182 ></A |
183 ><H2 | |
184 >Examples</H2 | |
185 ><P | |
186 ><PRE | |
187 CLASS="PROGRAMLISTING" | |
188 >SDL_SetTimer((33/10)*10, my_callback);</PRE | |
189 ></P | |
190 ></DIV | |
191 ><DIV | |
192 CLASS="REFSECT1" | |
193 ><A | |
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194 NAME="AEN8588" |
0 | 195 ></A |
196 ><H2 | |
197 >See Also</H2 | |
198 ><P | |
199 ><A | |
200 HREF="sdladdtimer.html" | |
201 ><TT | |
202 CLASS="FUNCTION" | |
203 >SDL_AddTimer</TT | |
204 ></A | |
205 ></P | |
206 ></DIV | |
207 ><DIV | |
208 CLASS="NAVFOOTER" | |
209 ><HR | |
210 ALIGN="LEFT" | |
211 WIDTH="100%"><TABLE | |
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212 SUMMARY="Footer navigation table" |
0 | 213 WIDTH="100%" |
214 BORDER="0" | |
215 CELLPADDING="0" | |
216 CELLSPACING="0" | |
217 ><TR | |
218 ><TD | |
219 WIDTH="33%" | |
220 ALIGN="left" | |
221 VALIGN="top" | |
222 ><A | |
223 HREF="sdlremovetimer.html" | |
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224 ACCESSKEY="P" |
0 | 225 >Prev</A |
226 ></TD | |
227 ><TD | |
228 WIDTH="34%" | |
229 ALIGN="center" | |
230 VALIGN="top" | |
231 ><A | |
232 HREF="index.html" | |
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233 ACCESSKEY="H" |
0 | 234 >Home</A |
235 ></TD | |
236 ><TD | |
237 WIDTH="33%" | |
238 ALIGN="right" | |
239 VALIGN="top" | |
240 > </TD | |
241 ></TR | |
242 ><TR | |
243 ><TD | |
244 WIDTH="33%" | |
245 ALIGN="left" | |
246 VALIGN="top" | |
247 >SDL_RemoveTimer</TD | |
248 ><TD | |
249 WIDTH="34%" | |
250 ALIGN="center" | |
251 VALIGN="top" | |
252 ><A | |
253 HREF="time.html" | |
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254 ACCESSKEY="U" |
0 | 255 >Up</A |
256 ></TD | |
257 ><TD | |
258 WIDTH="33%" | |
259 ALIGN="right" | |
260 VALIGN="top" | |
261 > </TD | |
262 ></TR | |
263 ></TABLE | |
264 ></DIV | |
265 ></BODY | |
266 ></HTML | |
267 > |