Mercurial > sdl-ios-xcode
annotate docs/html/event.html @ 610:95433459fbd2
Date: Mon, 14 Apr 2003 22:08:27 +0100
From: Patrice Mandin
Subject: [SDL][PATCH] 2 patches for sdl
Here are 2 patches for SDL:
- One is to put the dummy video drivers at the end of the
video drivers list. It gave me problems, when
SDL_VIDEODRIVER is not set, and the dummy driver is used
instead of the platform's driver, just because it is
always available. So the dummy driver must always be at
the end of the list. I suppose picogui and dc video
drivers also don't work.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 15 Apr 2003 15:46:56 +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 > |