Mercurial > sdl-ios-xcode
annotate docs/html/sdlpumpevents.html @ 1295:c3e36ac8a94c
Date: Sun, 6 Mar 2005 17:06:20 +0100
From: Per Inge Mathisen
Subject: [SDL] Fullscreen refresh on win32
Windows has a terrible default for fullscreen 3D apps of 60mhz refresh
rate. This can be fixed by the user by going into his driver's
control panel and forcing the refresh rate higher. However, this not a
very user friendly way about it, and in any case SDL contains no code
that could figure out this that condition has afflicted the user.
So the question is, could SDL fix this for the user? It is possible
under Windows to request a higher refresh rate. The danger is of
course that if the user has an old monitor, and you request a too high
refresh rate, the monitor could be damaged. However, I believe there
might be a way around that: Check before switching what refresh rate
the user's desktop runs in, and if our fullscreen dimensions are equal
or less than those of the desktop, use the higher refresh rate of 60
and the desktop rate.
Since most users run their desktops in the same or higher resolution
something sane, this should fix this problem for most users.
Thoughts?
An alternative is to add an SDL_GL_GetAttribute(SDL_GL_REFRESH_RATE)
option so that programs can bitch at their users at their own
convenience.
- Per
author | Sam Lantinga <slouken@libsdl.org> |
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date | Mon, 30 Jan 2006 06:56:10 +0000 |
parents | 355632dca928 |
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rev | line source |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_PumpEvents</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="Event Functions." | |
17 HREF="eventfunctions.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_PeepEvents" | |
20 HREF="sdlpeepevents.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="eventfunctions.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="sdlpeepevents.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="SDLPUMPEVENTS" | |
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74 ></A |
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75 >SDL_PumpEvents</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN5387" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_PumpEvents -- Pumps the event loop, gathering events from the input devices.</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN5390" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN5391" |
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 >void <B | |
106 CLASS="FSFUNC" | |
107 >SDL_PumpEvents</B | |
108 ></CODE | |
109 >(void);</CODE | |
110 ></P | |
111 ><P | |
112 ></P | |
113 ></DIV | |
114 ></DIV | |
115 ><DIV | |
116 CLASS="REFSECT1" | |
117 ><A | |
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118 NAME="AEN5397" |
0 | 119 ></A |
120 ><H2 | |
121 >Description</H2 | |
122 ><P | |
123 >Pumps the event loop, gathering events from the input devices.</P | |
124 ><P | |
125 ><TT | |
126 CLASS="FUNCTION" | |
127 >SDL_PumpEvents</TT | |
128 > gathers all the pending input information from devices and places it on the event queue. Without calls to <TT | |
129 CLASS="FUNCTION" | |
130 >SDL_PumpEvents</TT | |
131 > no events would ever be placed on the queue. Often calls the need for <TT | |
132 CLASS="FUNCTION" | |
133 >SDL_PumpEvents</TT | |
134 > is hidden from the user since <A | |
135 HREF="sdlpollevent.html" | |
136 ><TT | |
137 CLASS="FUNCTION" | |
138 >SDL_PollEvent</TT | |
139 ></A | |
140 > and <A | |
141 HREF="sdlwaitevent.html" | |
142 ><TT | |
143 CLASS="FUNCTION" | |
144 >SDL_WaitEvent</TT | |
145 ></A | |
146 > implicitly call <TT | |
147 CLASS="FUNCTION" | |
148 >SDL_PumpEvents</TT | |
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149 >. However, if you are not polling or waiting for events (e.g. you are filtering them), then you must call <TT |
0 | 150 CLASS="FUNCTION" |
151 >SDL_PumpEvents</TT | |
152 > to force an event queue update.</P | |
153 ><DIV | |
154 CLASS="NOTE" | |
155 ><BLOCKQUOTE | |
156 CLASS="NOTE" | |
157 ><P | |
158 ><B | |
159 >Note: </B | |
160 >You can only call this function in the thread that set the video mode.</P | |
161 ></BLOCKQUOTE | |
162 ></DIV | |
163 ></DIV | |
164 ><DIV | |
165 CLASS="REFSECT1" | |
166 ><A | |
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167 NAME="AEN5412" |
0 | 168 ></A |
169 ><H2 | |
170 >See Also</H2 | |
171 ><P | |
172 ><A | |
173 HREF="sdlpollevent.html" | |
174 ><TT | |
175 CLASS="FUNCTION" | |
176 >SDL_PollEvent</TT | |
177 ></A | |
178 ></P | |
179 ></DIV | |
180 ><DIV | |
181 CLASS="NAVFOOTER" | |
182 ><HR | |
183 ALIGN="LEFT" | |
184 WIDTH="100%"><TABLE | |
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185 SUMMARY="Footer navigation table" |
0 | 186 WIDTH="100%" |
187 BORDER="0" | |
188 CELLPADDING="0" | |
189 CELLSPACING="0" | |
190 ><TR | |
191 ><TD | |
192 WIDTH="33%" | |
193 ALIGN="left" | |
194 VALIGN="top" | |
195 ><A | |
196 HREF="eventfunctions.html" | |
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197 ACCESSKEY="P" |
0 | 198 >Prev</A |
199 ></TD | |
200 ><TD | |
201 WIDTH="34%" | |
202 ALIGN="center" | |
203 VALIGN="top" | |
204 ><A | |
205 HREF="index.html" | |
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206 ACCESSKEY="H" |
0 | 207 >Home</A |
208 ></TD | |
209 ><TD | |
210 WIDTH="33%" | |
211 ALIGN="right" | |
212 VALIGN="top" | |
213 ><A | |
214 HREF="sdlpeepevents.html" | |
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215 ACCESSKEY="N" |
0 | 216 >Next</A |
217 ></TD | |
218 ></TR | |
219 ><TR | |
220 ><TD | |
221 WIDTH="33%" | |
222 ALIGN="left" | |
223 VALIGN="top" | |
224 >Event Functions.</TD | |
225 ><TD | |
226 WIDTH="34%" | |
227 ALIGN="center" | |
228 VALIGN="top" | |
229 ><A | |
230 HREF="eventfunctions.html" | |
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231 ACCESSKEY="U" |
0 | 232 >Up</A |
233 ></TD | |
234 ><TD | |
235 WIDTH="33%" | |
236 ALIGN="right" | |
237 VALIGN="top" | |
238 >SDL_PeepEvents</TD | |
239 ></TR | |
240 ></TABLE | |
241 ></DIV | |
242 ></BODY | |
243 ></HTML | |
244 > |