Mercurial > sdl-ios-xcode
annotate docs/html/event.html @ 641:df178851293b
Date: 28 Jun 2003 22:42:52 +0100
From: Alan Swanson
Subject: Re: [SDL] New XFree 4.3 Video Mode Patch
I have a wee amendment that moves the qsort in set_best_resolution
to only occur after failing to find an exact match only. This would
make absolutely sure we get a user set mode.
While I've never had any problems for my normal resolutions (1280x1024,
1024x768, 800x600 & 640,480) while closely examining the output from
qsort I've noticed it doesn't seem to sort the modes fully. These is
one definite wrong at 1152x768 and a few that just look wrong to me.
From a program (attached) I made to examine this more easily. X has
sorted its mode list using the same method as ours (plus frequency),
and our user modes get inserted without any other movement.
On the patch I've made I've also changed cmpmodes to sort on vertical
resolution and then horizontal. Ie vertical is now most significant
bit.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 28 Jun 2003 21:52:26 +0000 |
| parents | e5bc29de3f0a |
| children | 355632dca928 |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >Events</TITLE | |
| 5 ><META | |
| 6 NAME="GENERATOR" | |
|
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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="SDL Reference" | |
| 14 HREF="reference.html"><LINK | |
| 15 REL="PREVIOUS" | |
| 16 TITLE="SDL_WM_GrabInput" | |
| 17 HREF="sdlwmgrabinput.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="SDL Event Structures." | |
| 20 HREF="eventstructures.html"><META | |
| 21 NAME="KEYWORD" | |
| 22 CONTENT="events"><META | |
| 23 NAME="KEYWORD" | |
| 24 CONTENT="function"></HEAD | |
| 25 ><BODY | |
| 26 CLASS="CHAPTER" | |
| 27 BGCOLOR="#FFF8DC" | |
| 28 TEXT="#000000" | |
| 29 LINK="#0000ee" | |
| 30 VLINK="#551a8b" | |
| 31 ALINK="#ff0000" | |
| 32 ><DIV | |
| 33 CLASS="NAVHEADER" | |
| 34 ><TABLE | |
| 35 WIDTH="100%" | |
| 36 BORDER="0" | |
| 37 CELLPADDING="0" | |
| 38 CELLSPACING="0" | |
| 39 ><TR | |
| 40 ><TH | |
| 41 COLSPAN="3" | |
| 42 ALIGN="center" | |
| 43 >SDL Library Documentation</TH | |
| 44 ></TR | |
| 45 ><TR | |
| 46 ><TD | |
| 47 WIDTH="10%" | |
| 48 ALIGN="left" | |
| 49 VALIGN="bottom" | |
| 50 ><A | |
| 51 HREF="sdlwmgrabinput.html" | |
| 52 >Prev</A | |
| 53 ></TD | |
| 54 ><TD | |
| 55 WIDTH="80%" | |
| 56 ALIGN="center" | |
| 57 VALIGN="bottom" | |
| 58 ></TD | |
| 59 ><TD | |
| 60 WIDTH="10%" | |
| 61 ALIGN="right" | |
| 62 VALIGN="bottom" | |
| 63 ><A | |
| 64 HREF="eventstructures.html" | |
| 65 >Next</A | |
| 66 ></TD | |
| 67 ></TR | |
| 68 ></TABLE | |
| 69 ><HR | |
| 70 ALIGN="LEFT" | |
| 71 WIDTH="100%"></DIV | |
| 72 ><DIV | |
| 73 CLASS="CHAPTER" | |
| 74 ><H1 | |
| 75 ><A | |
| 76 NAME="EVENT" | |
| 77 >Chapter 8. Events</A | |
| 78 ></H1 | |
| 79 ><DIV | |
| 80 CLASS="TOC" | |
| 81 ><DL | |
| 82 ><DT | |
| 83 ><B | |
| 84 >Table of Contents</B | |
| 85 ></DT | |
| 86 ><DT | |
| 87 ><A | |
|
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88 HREF="event.html#AEN3307" |
| 0 | 89 >Introduction</A |
| 90 ></DT | |
| 91 ><DT | |
| 92 ><A | |
| 93 HREF="eventstructures.html" | |
| 94 >SDL Event Structures.</A | |
| 95 ></DT | |
| 96 ><DT | |
| 97 ><A | |
| 98 HREF="eventfunctions.html" | |
| 99 >Event Functions.</A | |
| 100 ></DT | |
| 101 ></DL | |
| 102 ></DIV | |
| 103 ><DIV | |
| 104 CLASS="SECT1" | |
| 105 ><H1 | |
| 106 CLASS="SECT1" | |
| 107 ><A | |
|
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108 NAME="AEN3307" |
| 0 | 109 >Introduction</A |
| 110 ></H1 | |
| 111 ><P | |
| 112 >Event handling allows your application to receive input from the user. Event handling is initalised (along with video) with a call to: | |
| 113 <PRE | |
| 114 CLASS="PROGRAMLISTING" | |
| 115 >SDL_Init(SDL_INIT_VIDEO);</PRE | |
| 116 > | |
|
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117 Internally, SDL stores all the events waiting to be handled in an event queue. Using functions like <A |
| 0 | 118 HREF="sdlpollevent.html" |
| 119 ><TT | |
| 120 CLASS="FUNCTION" | |
| 121 >SDL_PollEvent</TT | |
| 122 ></A | |
| 123 > and <A | |
| 124 HREF="sdlpeepevents.html" | |
| 125 ><TT | |
| 126 CLASS="FUNCTION" | |
| 127 >SDL_PeepEvents</TT | |
| 128 ></A | |
| 129 > you can observe and handle waiting input events.</P | |
| 130 ><P | |
| 131 >The key to event handling in SDL is the <A | |
| 132 HREF="sdlevent.html" | |
| 133 ><SPAN | |
| 134 CLASS="STRUCTNAME" | |
| 135 >SDL_Event</SPAN | |
| 136 ></A | |
| 137 > union. The event queue itself is composed of a series of <SPAN | |
| 138 CLASS="STRUCTNAME" | |
| 139 >SDL_Event</SPAN | |
| 140 > unions, one for each waiting event. <SPAN | |
| 141 CLASS="STRUCTNAME" | |
| 142 >SDL_Event</SPAN | |
| 143 > unions are read from the queue with the <TT | |
| 144 CLASS="FUNCTION" | |
| 145 >SDL_PollEvent</TT | |
| 146 > function and it is then up to the application to process the information stored with them.</P | |
| 147 ></DIV | |
| 148 ></DIV | |
| 149 ><DIV | |
| 150 CLASS="NAVFOOTER" | |
| 151 ><HR | |
| 152 ALIGN="LEFT" | |
| 153 WIDTH="100%"><TABLE | |
| 154 WIDTH="100%" | |
| 155 BORDER="0" | |
| 156 CELLPADDING="0" | |
| 157 CELLSPACING="0" | |
| 158 ><TR | |
| 159 ><TD | |
| 160 WIDTH="33%" | |
| 161 ALIGN="left" | |
| 162 VALIGN="top" | |
| 163 ><A | |
| 164 HREF="sdlwmgrabinput.html" | |
| 165 >Prev</A | |
| 166 ></TD | |
| 167 ><TD | |
| 168 WIDTH="34%" | |
| 169 ALIGN="center" | |
| 170 VALIGN="top" | |
| 171 ><A | |
| 172 HREF="index.html" | |
| 173 >Home</A | |
| 174 ></TD | |
| 175 ><TD | |
| 176 WIDTH="33%" | |
| 177 ALIGN="right" | |
| 178 VALIGN="top" | |
| 179 ><A | |
| 180 HREF="eventstructures.html" | |
| 181 >Next</A | |
| 182 ></TD | |
| 183 ></TR | |
| 184 ><TR | |
| 185 ><TD | |
| 186 WIDTH="33%" | |
| 187 ALIGN="left" | |
| 188 VALIGN="top" | |
| 189 >SDL_WM_GrabInput</TD | |
| 190 ><TD | |
| 191 WIDTH="34%" | |
| 192 ALIGN="center" | |
| 193 VALIGN="top" | |
| 194 ><A | |
| 195 HREF="reference.html" | |
| 196 >Up</A | |
| 197 ></TD | |
| 198 ><TD | |
| 199 WIDTH="33%" | |
| 200 ALIGN="right" | |
| 201 VALIGN="top" | |
| 202 >SDL Event Structures.</TD | |
| 203 ></TR | |
| 204 ></TABLE | |
| 205 ></DIV | |
| 206 ></BODY | |
| 207 ></HTML | |
| 208 > |