Mercurial > sdl-ios-xcode
annotate docs/html/guideeventexamples.html @ 571:8e3ce997621c
Date: Thu, 16 Jan 2003 13:48:31 +0200
From: "Mike Gorchak"
Subject: All QNX patches
whole patches concerning QNX. Almost all code has been rewritten by Julian
and me. Added initial support for hw overlays in QNX and many many others
fixes.
P.S. This patches has been reviewed by Dave Rempel from QSSL and included in
SDL 1.2.5 distribution, which coming on 3rd party CD for newest 6.2.1
version of QNX, which will be available soon.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 20 Jan 2003 01:38:37 +0000 |
| parents | 55f1f1b3e27d |
| children | 355632dca928 |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >Event Examples</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="Examples" | |
| 14 HREF="guideexamples.html"><LINK | |
| 15 REL="PREVIOUS" | |
|
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16 TITLE="Examples" |
|
55f1f1b3e27d
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17 HREF="guideexamples.html"><LINK |
| 0 | 18 REL="NEXT" |
| 19 TITLE="Audio Examples" | |
| 20 HREF="guideaudioexamples.html"></HEAD | |
| 21 ><BODY | |
| 22 CLASS="SECT1" | |
| 23 BGCOLOR="#FFF8DC" | |
| 24 TEXT="#000000" | |
| 25 LINK="#0000ee" | |
| 26 VLINK="#551a8b" | |
| 27 ALINK="#ff0000" | |
| 28 ><DIV | |
| 29 CLASS="NAVHEADER" | |
| 30 ><TABLE | |
| 31 WIDTH="100%" | |
| 32 BORDER="0" | |
| 33 CELLPADDING="0" | |
| 34 CELLSPACING="0" | |
| 35 ><TR | |
| 36 ><TH | |
| 37 COLSPAN="3" | |
| 38 ALIGN="center" | |
| 39 >SDL Library Documentation</TH | |
| 40 ></TR | |
| 41 ><TR | |
| 42 ><TD | |
| 43 WIDTH="10%" | |
| 44 ALIGN="left" | |
| 45 VALIGN="bottom" | |
| 46 ><A | |
|
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parents:
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changeset
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47 HREF="guideexamples.html" |
| 0 | 48 >Prev</A |
| 49 ></TD | |
| 50 ><TD | |
| 51 WIDTH="80%" | |
| 52 ALIGN="center" | |
| 53 VALIGN="bottom" | |
| 54 >Chapter 4. Examples</TD | |
| 55 ><TD | |
| 56 WIDTH="10%" | |
| 57 ALIGN="right" | |
| 58 VALIGN="bottom" | |
| 59 ><A | |
| 60 HREF="guideaudioexamples.html" | |
| 61 >Next</A | |
| 62 ></TD | |
| 63 ></TR | |
| 64 ></TABLE | |
| 65 ><HR | |
| 66 ALIGN="LEFT" | |
| 67 WIDTH="100%"></DIV | |
| 68 ><DIV | |
| 69 CLASS="SECT1" | |
| 70 ><H1 | |
| 71 CLASS="SECT1" | |
| 72 ><A | |
| 73 NAME="GUIDEEVENTEXAMPLES" | |
| 74 >Event Examples</A | |
| 75 ></H1 | |
| 76 ><P | |
| 77 ></P | |
| 78 ><DIV | |
| 79 CLASS="SECT2" | |
| 80 ><H2 | |
| 81 CLASS="SECT2" | |
| 82 ><A | |
|
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83 NAME="AEN375" |
| 0 | 84 >Filtering and Handling Events</A |
| 85 ></H2 | |
| 86 ><P | |
| 87 ><PRE | |
| 88 CLASS="PROGRAMLISTING" | |
| 89 >#include <stdio.h> | |
| 90 #include <stdlib.h> | |
| 91 | |
| 92 #include "SDL.h" | |
| 93 | |
| 94 /* This function may run in a separate event thread */ | |
| 95 int FilterEvents(const SDL_Event *event) { | |
| 96 static int boycott = 1; | |
| 97 | |
| 98 /* This quit event signals the closing of the window */ | |
| 99 if ( (event->type == SDL_QUIT) && boycott ) { | |
| 100 printf("Quit event filtered out -- try again.\n"); | |
| 101 boycott = 0; | |
| 102 return(0); | |
| 103 } | |
| 104 if ( event->type == SDL_MOUSEMOTION ) { | |
| 105 printf("Mouse moved to (%d,%d)\n", | |
| 106 event->motion.x, event->motion.y); | |
| 107 return(0); /* Drop it, we've handled it */ | |
| 108 } | |
| 109 return(1); | |
| 110 } | |
| 111 | |
| 112 int main(int argc, char *argv[]) | |
| 113 { | |
| 114 SDL_Event event; | |
| 115 | |
| 116 /* Initialize the SDL library (starts the event loop) */ | |
| 117 if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) { | |
| 118 fprintf(stderr, | |
| 119 "Couldn't initialize SDL: %s\n", SDL_GetError()); | |
| 120 exit(1); | |
| 121 } | |
| 122 | |
| 123 /* Clean up on exit, exit on window close and interrupt */ | |
| 124 atexit(SDL_Quit); | |
| 125 | |
| 126 /* Ignore key events */ | |
| 127 SDL_EventState(SDL_KEYDOWN, SDL_IGNORE); | |
| 128 SDL_EventState(SDL_KEYUP, SDL_IGNORE); | |
| 129 | |
| 130 /* Filter quit and mouse motion events */ | |
| 131 SDL_SetEventFilter(FilterEvents); | |
| 132 | |
| 133 /* The mouse isn't much use unless we have a display for reference */ | |
| 134 if ( SDL_SetVideoMode(640, 480, 8, 0) == NULL ) { | |
| 135 fprintf(stderr, "Couldn't set 640x480x8 video mode: %s\n", | |
| 136 SDL_GetError()); | |
| 137 exit(1); | |
| 138 } | |
| 139 | |
| 140 /* Loop waiting for ESC+Mouse_Button */ | |
| 141 while ( SDL_WaitEvent(&event) >= 0 ) { | |
| 142 switch (event.type) { | |
| 143 case SDL_ACTIVEEVENT: { | |
| 144 if ( event.active.state & SDL_APPACTIVE ) { | |
| 145 if ( event.active.gain ) { | |
| 146 printf("App activated\n"); | |
| 147 } else { | |
| 148 printf("App iconified\n"); | |
| 149 } | |
| 150 } | |
| 151 } | |
| 152 break; | |
| 153 | |
| 154 case SDL_MOUSEBUTTONDOWN: { | |
| 155 Uint8 *keys; | |
| 156 | |
| 157 keys = SDL_GetKeyState(NULL); | |
| 158 if ( keys[SDLK_ESCAPE] == SDL_PRESSED ) { | |
| 159 printf("Bye bye...\n"); | |
| 160 exit(0); | |
| 161 } | |
| 162 printf("Mouse button pressed\n"); | |
| 163 } | |
| 164 break; | |
| 165 | |
| 166 case SDL_QUIT: { | |
| 167 printf("Quit requested, quitting.\n"); | |
| 168 exit(0); | |
| 169 } | |
| 170 break; | |
| 171 } | |
| 172 } | |
| 173 /* This should never happen */ | |
| 174 printf("SDL_WaitEvent error: %s\n", SDL_GetError()); | |
| 175 exit(1); | |
| 176 }</PRE | |
| 177 ></P | |
| 178 ></DIV | |
| 179 ></DIV | |
| 180 ><DIV | |
| 181 CLASS="NAVFOOTER" | |
| 182 ><HR | |
| 183 ALIGN="LEFT" | |
| 184 WIDTH="100%"><TABLE | |
| 185 WIDTH="100%" | |
| 186 BORDER="0" | |
| 187 CELLPADDING="0" | |
| 188 CELLSPACING="0" | |
| 189 ><TR | |
| 190 ><TD | |
| 191 WIDTH="33%" | |
| 192 ALIGN="left" | |
| 193 VALIGN="top" | |
| 194 ><A | |
|
55
55f1f1b3e27d
Added new docs for SDL 1.2.1
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
195 HREF="guideexamples.html" |
| 0 | 196 >Prev</A |
| 197 ></TD | |
| 198 ><TD | |
| 199 WIDTH="34%" | |
| 200 ALIGN="center" | |
| 201 VALIGN="top" | |
| 202 ><A | |
| 203 HREF="index.html" | |
| 204 >Home</A | |
| 205 ></TD | |
| 206 ><TD | |
| 207 WIDTH="33%" | |
| 208 ALIGN="right" | |
| 209 VALIGN="top" | |
| 210 ><A | |
| 211 HREF="guideaudioexamples.html" | |
| 212 >Next</A | |
| 213 ></TD | |
| 214 ></TR | |
| 215 ><TR | |
| 216 ><TD | |
| 217 WIDTH="33%" | |
| 218 ALIGN="left" | |
| 219 VALIGN="top" | |
|
55
55f1f1b3e27d
Added new docs for SDL 1.2.1
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
220 >Examples</TD |
| 0 | 221 ><TD |
| 222 WIDTH="34%" | |
| 223 ALIGN="center" | |
| 224 VALIGN="top" | |
| 225 ><A | |
| 226 HREF="guideexamples.html" | |
| 227 >Up</A | |
| 228 ></TD | |
| 229 ><TD | |
| 230 WIDTH="33%" | |
| 231 ALIGN="right" | |
| 232 VALIGN="top" | |
| 233 >Audio Examples</TD | |
| 234 ></TR | |
| 235 ></TABLE | |
| 236 ></DIV | |
| 237 ></BODY | |
| 238 ></HTML | |
| 239 > |