Mercurial > sdl-ios-xcode
annotate docs/html/sdlmousemotionevent.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 |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_MouseMotionEvent</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 Event Structures." | |
14 HREF="eventstructures.html"><LINK | |
15 REL="PREVIOUS" | |
16 TITLE="SDL_KeyboardEvent" | |
17 HREF="sdlkeyboardevent.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_MouseButtonEvent" | |
20 HREF="sdlmousebuttonevent.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="sdlkeyboardevent.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="sdlmousebuttonevent.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="SDLMOUSEMOTIONEVENT" | |
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74 ></A |
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75 >SDL_MouseMotionEvent</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN4079" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_MouseMotionEvent -- Mouse motion event structure</DIV | |
84 ><DIV | |
85 CLASS="REFSECT1" | |
86 ><A | |
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87 NAME="AEN4082" |
0 | 88 ></A |
89 ><H2 | |
90 >Structure Definition</H2 | |
91 ><PRE | |
92 CLASS="PROGRAMLISTING" | |
93 >typedef struct{ | |
94 Uint8 type; | |
95 Uint8 state; | |
96 Uint16 x, y; | |
97 Sint16 xrel, yrel; | |
98 } SDL_MouseMotionEvent;</PRE | |
99 ></DIV | |
100 ><DIV | |
101 CLASS="REFSECT1" | |
102 ><A | |
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103 NAME="AEN4085" |
0 | 104 ></A |
105 ><H2 | |
106 >Structure Data</H2 | |
107 ><DIV | |
108 CLASS="INFORMALTABLE" | |
109 ><A | |
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110 NAME="AEN4087" |
0 | 111 ></A |
112 ><P | |
113 ></P | |
114 ><TABLE | |
115 BORDER="0" | |
116 CLASS="CALSTABLE" | |
117 ><TBODY | |
118 ><TR | |
119 ><TD | |
120 ALIGN="LEFT" | |
121 VALIGN="TOP" | |
122 ><TT | |
123 CLASS="STRUCTFIELD" | |
124 ><I | |
125 >type</I | |
126 ></TT | |
127 ></TD | |
128 ><TD | |
129 ALIGN="LEFT" | |
130 VALIGN="TOP" | |
131 ><TT | |
132 CLASS="LITERAL" | |
133 >SDL_MOUSEMOTION</TT | |
134 ></TD | |
135 ></TR | |
136 ><TR | |
137 ><TD | |
138 ALIGN="LEFT" | |
139 VALIGN="TOP" | |
140 ><TT | |
141 CLASS="STRUCTFIELD" | |
142 ><I | |
143 >state</I | |
144 ></TT | |
145 ></TD | |
146 ><TD | |
147 ALIGN="LEFT" | |
148 VALIGN="TOP" | |
149 >The current button state</TD | |
150 ></TR | |
151 ><TR | |
152 ><TD | |
153 ALIGN="LEFT" | |
154 VALIGN="TOP" | |
155 ><TT | |
156 CLASS="STRUCTFIELD" | |
157 ><I | |
158 >x</I | |
159 ></TT | |
160 >, <TT | |
161 CLASS="STRUCTFIELD" | |
162 ><I | |
163 >y</I | |
164 ></TT | |
165 ></TD | |
166 ><TD | |
167 ALIGN="LEFT" | |
168 VALIGN="TOP" | |
169 >The X/Y coordinates of the mouse</TD | |
170 ></TR | |
171 ><TR | |
172 ><TD | |
173 ALIGN="LEFT" | |
174 VALIGN="TOP" | |
175 ><TT | |
176 CLASS="STRUCTFIELD" | |
177 ><I | |
178 >xrel</I | |
179 ></TT | |
180 >, <TT | |
181 CLASS="STRUCTFIELD" | |
182 ><I | |
183 >yrel</I | |
184 ></TT | |
185 ></TD | |
186 ><TD | |
187 ALIGN="LEFT" | |
188 VALIGN="TOP" | |
189 >Relative motion in the X/Y direction</TD | |
190 ></TR | |
191 ></TBODY | |
192 ></TABLE | |
193 ><P | |
194 ></P | |
195 ></DIV | |
196 ></DIV | |
197 ><DIV | |
198 CLASS="REFSECT1" | |
199 ><A | |
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200 NAME="AEN4109" |
0 | 201 ></A |
202 ><H2 | |
203 >Description</H2 | |
204 ><P | |
205 ><SPAN | |
206 CLASS="STRUCTNAME" | |
207 >SDL_MouseMotionEvent</SPAN | |
208 > is a member of the <A | |
209 HREF="sdlevent.html" | |
210 ><SPAN | |
211 CLASS="STRUCTNAME" | |
212 >SDL_Event</SPAN | |
213 ></A | |
214 > union and is used when an event of type <TT | |
215 CLASS="LITERAL" | |
216 >SDL_MOUSEMOTION</TT | |
217 > is reported.</P | |
218 ><P | |
219 >Simply put, a <TT | |
220 CLASS="LITERAL" | |
221 >SDL_MOUSEMOTION</TT | |
222 > type event occurs when a user moves the mouse within the application window or when <A | |
223 HREF="sdlwarpmouse.html" | |
224 ><TT | |
225 CLASS="FUNCTION" | |
226 >SDL_WarpMouse</TT | |
227 ></A | |
228 > is called. Both the absolute (<TT | |
229 CLASS="STRUCTFIELD" | |
230 ><I | |
231 >x</I | |
232 ></TT | |
233 > and <TT | |
234 CLASS="STRUCTFIELD" | |
235 ><I | |
236 >y</I | |
237 ></TT | |
238 >) and relative (<TT | |
239 CLASS="STRUCTFIELD" | |
240 ><I | |
241 >xrel</I | |
242 ></TT | |
243 > and <TT | |
244 CLASS="STRUCTFIELD" | |
245 ><I | |
246 >yrel</I | |
247 ></TT | |
248 >) coordinates are reported along with the current button states (<TT | |
249 CLASS="STRUCTFIELD" | |
250 ><I | |
251 >state</I | |
252 ></TT | |
253 >). The button state can be interpreted using the <TT | |
254 CLASS="LITERAL" | |
255 >SDL_BUTTON</TT | |
256 > macro (see <A | |
257 HREF="sdlgetmousestate.html" | |
258 ><TT | |
259 CLASS="FUNCTION" | |
260 >SDL_GetMouseState</TT | |
261 ></A | |
262 >).</P | |
263 ><P | |
264 >If the cursor is hidden (<A | |
265 HREF="sdlshowcursor.html" | |
266 ><TT | |
267 CLASS="FUNCTION" | |
268 >SDL_ShowCursor</TT | |
269 >(0)</A | |
270 >) and the input is grabbed (<A | |
271 HREF="sdlwmgrabinput.html" | |
272 ><TT | |
273 CLASS="FUNCTION" | |
274 >SDL_WM_GrabInput</TT | |
275 >(SDL_GRAB_ON)</A | |
276 >), then the mouse will give relative motion events even when the cursor reaches the edge fo the screen. This is currently only implemented on Windows and Linux/Unix-a-likes.</P | |
277 ></DIV | |
278 ><DIV | |
279 CLASS="REFSECT1" | |
280 ><A | |
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281 NAME="AEN4133" |
0 | 282 ></A |
283 ><H2 | |
284 >See Also</H2 | |
285 ><P | |
286 ><A | |
287 HREF="sdlevent.html" | |
288 ><SPAN | |
289 CLASS="STRUCTNAME" | |
290 >SDL_Event</SPAN | |
291 ></A | |
292 >, | |
293 <A | |
294 HREF="sdlmousebuttonevent.html" | |
295 ><SPAN | |
296 CLASS="STRUCTNAME" | |
297 >SDL_MouseButtonEvent</SPAN | |
298 ></A | |
299 ></P | |
300 ></DIV | |
301 ><DIV | |
302 CLASS="NAVFOOTER" | |
303 ><HR | |
304 ALIGN="LEFT" | |
305 WIDTH="100%"><TABLE | |
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306 SUMMARY="Footer navigation table" |
0 | 307 WIDTH="100%" |
308 BORDER="0" | |
309 CELLPADDING="0" | |
310 CELLSPACING="0" | |
311 ><TR | |
312 ><TD | |
313 WIDTH="33%" | |
314 ALIGN="left" | |
315 VALIGN="top" | |
316 ><A | |
317 HREF="sdlkeyboardevent.html" | |
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318 ACCESSKEY="P" |
0 | 319 >Prev</A |
320 ></TD | |
321 ><TD | |
322 WIDTH="34%" | |
323 ALIGN="center" | |
324 VALIGN="top" | |
325 ><A | |
326 HREF="index.html" | |
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327 ACCESSKEY="H" |
0 | 328 >Home</A |
329 ></TD | |
330 ><TD | |
331 WIDTH="33%" | |
332 ALIGN="right" | |
333 VALIGN="top" | |
334 ><A | |
335 HREF="sdlmousebuttonevent.html" | |
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336 ACCESSKEY="N" |
0 | 337 >Next</A |
338 ></TD | |
339 ></TR | |
340 ><TR | |
341 ><TD | |
342 WIDTH="33%" | |
343 ALIGN="left" | |
344 VALIGN="top" | |
345 >SDL_KeyboardEvent</TD | |
346 ><TD | |
347 WIDTH="34%" | |
348 ALIGN="center" | |
349 VALIGN="top" | |
350 ><A | |
351 HREF="eventstructures.html" | |
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352 ACCESSKEY="U" |
0 | 353 >Up</A |
354 ></TD | |
355 ><TD | |
356 WIDTH="33%" | |
357 ALIGN="right" | |
358 VALIGN="top" | |
359 >SDL_MouseButtonEvent</TD | |
360 ></TR | |
361 ></TABLE | |
362 ></DIV | |
363 ></BODY | |
364 ></HTML | |
365 > |