Mercurial > sdl-ios-xcode
annotate docs/html/event.html @ 4207:a673f44949d6 SDL-1.2
Fixed bug #562
this patch by Diego Pettenò <flameeyes@gentoo.org> for SDL-1.2:
The attached patch applies over latest ~arch SDL version, and allows to use the
xinerama support to launch an application full screened on the head "0".
The SDL_VIDEO_FULLSCREEN_HEAD environment variable sets the head on which the
full screen will be displayed, but if you set it to 0, the code simply ignores
it as unset. My patch changes the unset value to -1, so that the 0 value can be
used correctly. Without this, trying to get fullscreen on head 0 would get the
same result than not having xinerama enabled at all.
http://sources.gentoo.org/media-libs/libsdl/files/libsdl-1.2.11-xinerama-head-0.patch
SDL-1.3 doesnt seem to have any code like this, but it's still good for SDL-1.2
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 21 Sep 2009 07:20:51 +0000 |
| parents | 355632dca928 |
| children |
| 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 1.76b+ |
| 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 | |
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35 SUMMARY="Header navigation table" |
| 0 | 36 WIDTH="100%" |
| 37 BORDER="0" | |
| 38 CELLPADDING="0" | |
| 39 CELLSPACING="0" | |
| 40 ><TR | |
| 41 ><TH | |
| 42 COLSPAN="3" | |
| 43 ALIGN="center" | |
| 44 >SDL Library Documentation</TH | |
| 45 ></TR | |
| 46 ><TR | |
| 47 ><TD | |
| 48 WIDTH="10%" | |
| 49 ALIGN="left" | |
| 50 VALIGN="bottom" | |
| 51 ><A | |
| 52 HREF="sdlwmgrabinput.html" | |
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53 ACCESSKEY="P" |
| 0 | 54 >Prev</A |
| 55 ></TD | |
| 56 ><TD | |
| 57 WIDTH="80%" | |
| 58 ALIGN="center" | |
| 59 VALIGN="bottom" | |
| 60 ></TD | |
| 61 ><TD | |
| 62 WIDTH="10%" | |
| 63 ALIGN="right" | |
| 64 VALIGN="bottom" | |
| 65 ><A | |
| 66 HREF="eventstructures.html" | |
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67 ACCESSKEY="N" |
| 0 | 68 >Next</A |
| 69 ></TD | |
| 70 ></TR | |
| 71 ></TABLE | |
| 72 ><HR | |
| 73 ALIGN="LEFT" | |
| 74 WIDTH="100%"></DIV | |
| 75 ><DIV | |
| 76 CLASS="CHAPTER" | |
| 77 ><H1 | |
| 78 ><A | |
| 79 NAME="EVENT" | |
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80 ></A |
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81 >Chapter 8. Events</H1 |
| 0 | 82 ><DIV |
| 83 CLASS="TOC" | |
| 84 ><DL | |
| 85 ><DT | |
| 86 ><B | |
| 87 >Table of Contents</B | |
| 88 ></DT | |
| 89 ><DT | |
| 90 ><A | |
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91 HREF="event.html#AEN3691" |
| 0 | 92 >Introduction</A |
| 93 ></DT | |
| 94 ><DT | |
| 95 ><A | |
| 96 HREF="eventstructures.html" | |
| 97 >SDL Event Structures.</A | |
| 98 ></DT | |
| 99 ><DT | |
| 100 ><A | |
| 101 HREF="eventfunctions.html" | |
| 102 >Event Functions.</A | |
| 103 ></DT | |
| 104 ></DL | |
| 105 ></DIV | |
| 106 ><DIV | |
| 107 CLASS="SECT1" | |
| 108 ><H1 | |
| 109 CLASS="SECT1" | |
| 110 ><A | |
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111 NAME="AEN3691" |
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112 ></A |
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113 >Introduction</H1 |
| 0 | 114 ><P |
| 115 >Event handling allows your application to receive input from the user. Event handling is initalised (along with video) with a call to: | |
| 116 <PRE | |
| 117 CLASS="PROGRAMLISTING" | |
| 118 >SDL_Init(SDL_INIT_VIDEO);</PRE | |
| 119 > | |
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120 Internally, SDL stores all the events waiting to be handled in an event queue. Using functions like <A |
| 0 | 121 HREF="sdlpollevent.html" |
| 122 ><TT | |
| 123 CLASS="FUNCTION" | |
| 124 >SDL_PollEvent</TT | |
| 125 ></A | |
| 126 > and <A | |
| 127 HREF="sdlpeepevents.html" | |
| 128 ><TT | |
| 129 CLASS="FUNCTION" | |
| 130 >SDL_PeepEvents</TT | |
| 131 ></A | |
| 132 > you can observe and handle waiting input events.</P | |
| 133 ><P | |
| 134 >The key to event handling in SDL is the <A | |
| 135 HREF="sdlevent.html" | |
| 136 ><SPAN | |
| 137 CLASS="STRUCTNAME" | |
| 138 >SDL_Event</SPAN | |
| 139 ></A | |
| 140 > union. The event queue itself is composed of a series of <SPAN | |
| 141 CLASS="STRUCTNAME" | |
| 142 >SDL_Event</SPAN | |
| 143 > unions, one for each waiting event. <SPAN | |
| 144 CLASS="STRUCTNAME" | |
| 145 >SDL_Event</SPAN | |
| 146 > unions are read from the queue with the <TT | |
| 147 CLASS="FUNCTION" | |
| 148 >SDL_PollEvent</TT | |
| 149 > function and it is then up to the application to process the information stored with them.</P | |
| 150 ></DIV | |
| 151 ></DIV | |
| 152 ><DIV | |
| 153 CLASS="NAVFOOTER" | |
| 154 ><HR | |
| 155 ALIGN="LEFT" | |
| 156 WIDTH="100%"><TABLE | |
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157 SUMMARY="Footer navigation table" |
| 0 | 158 WIDTH="100%" |
| 159 BORDER="0" | |
| 160 CELLPADDING="0" | |
| 161 CELLSPACING="0" | |
| 162 ><TR | |
| 163 ><TD | |
| 164 WIDTH="33%" | |
| 165 ALIGN="left" | |
| 166 VALIGN="top" | |
| 167 ><A | |
| 168 HREF="sdlwmgrabinput.html" | |
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parents:
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169 ACCESSKEY="P" |
| 0 | 170 >Prev</A |
| 171 ></TD | |
| 172 ><TD | |
| 173 WIDTH="34%" | |
| 174 ALIGN="center" | |
| 175 VALIGN="top" | |
| 176 ><A | |
| 177 HREF="index.html" | |
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178 ACCESSKEY="H" |
| 0 | 179 >Home</A |
| 180 ></TD | |
| 181 ><TD | |
| 182 WIDTH="33%" | |
| 183 ALIGN="right" | |
| 184 VALIGN="top" | |
| 185 ><A | |
| 186 HREF="eventstructures.html" | |
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187 ACCESSKEY="N" |
| 0 | 188 >Next</A |
| 189 ></TD | |
| 190 ></TR | |
| 191 ><TR | |
| 192 ><TD | |
| 193 WIDTH="33%" | |
| 194 ALIGN="left" | |
| 195 VALIGN="top" | |
| 196 >SDL_WM_GrabInput</TD | |
| 197 ><TD | |
| 198 WIDTH="34%" | |
| 199 ALIGN="center" | |
| 200 VALIGN="top" | |
| 201 ><A | |
| 202 HREF="reference.html" | |
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203 ACCESSKEY="U" |
| 0 | 204 >Up</A |
| 205 ></TD | |
| 206 ><TD | |
| 207 WIDTH="33%" | |
| 208 ALIGN="right" | |
| 209 VALIGN="top" | |
| 210 >SDL Event Structures.</TD | |
| 211 ></TR | |
| 212 ></TABLE | |
| 213 ></DIV | |
| 214 ></BODY | |
| 215 ></HTML | |
| 216 > |