Mercurial > sdl-ios-xcode
annotate docs/html/sdlpollevent.html @ 821:30168104389f
Date: Sat, 14 Feb 2004 14:52:40 +0200
From: "Mike Gorchak"
Subject: Batch of the QNX6 fixes for the SDL
1. Updated readme.QNX
2. Fixed crashes during intensive window updating under fast machines (got over 200 rectangles for update).
3. Fixed double-buffered fullscreen modes, now it works as needed.
4. Fixed Photon detection algorithm.
5. Fixed HWSURFACE update function.
6. Added SDL_PHOTON_FULLSCREEN_REFRESH environment variable support for control refresh rates under Photon.
7. Added 640x400 fullscreen mode emulation via 640x480 (if videodriver not supports original 640x400 mode of course) shifted by 40 vertical pixels from begin, to center it. It's needed for some old DOS games which ran in doubled 320x200 mode.
8. Added available video ram amount support.
8. Added hardware surface allocation/deallocation support if current videomode and videodriver supports it.
9. Added hardware filling support.
10. Added hardware blits support (simple and colorkeyed).
And I've added to testvidinfo test color-keyed blits benchmark (maybe need to add alpha blits benchmark too ?). Currently Photon not supporting any alpha hardware blittings (all drivers lack of alpha blitting code support, only software alpha blitting exist in photon, which is hundreds times slowest than the SDL's one). So I've not added the alpha support. I suppose new QNX 6.3 will have the hardware alpha support, so when it will be done, I'll add alpha support.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sat, 14 Feb 2004 20:22:21 +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 > |