Mercurial > sdl-ios-xcode
annotate docs/html/time.html @ 77:1e7e61b9b0f9
Don't crash if freeing a cursor after quit...
| author | Sam Lantinga <slouken@lokigames.com> |
|---|---|
| date | Tue, 19 Jun 2001 21:07:12 +0000 |
| parents | 55f1f1b3e27d |
| children | 355632dca928 |
| rev | line source |
|---|---|
| 0 | 1 <HTML |
| 2 ><HEAD | |
| 3 ><TITLE | |
| 4 >Time</TITLE | |
| 5 ><META | |
| 6 NAME="GENERATOR" | |
|
55
55f1f1b3e27d
Added new docs for SDL 1.2.1
Sam Lantinga <slouken@lokigames.com>
parents:
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changeset
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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_CondWaitTimeout" | |
| 17 HREF="sdlcondwaittimeout.html"><LINK | |
| 18 REL="NEXT" | |
| 19 TITLE="SDL_GetTicks" | |
| 20 HREF="sdlgetticks.html"><META | |
| 21 NAME="KEYWORD" | |
| 22 CONTENT="time"><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="sdlcondwaittimeout.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="sdlgetticks.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="TIME" | |
| 77 >Chapter 13. Time</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 | |
| 88 HREF="sdlgetticks.html" | |
| 89 >SDL_GetTicks</A | |
| 90 > — Get the number of milliseconds since the SDL library initialization.</DT | |
| 91 ><DT | |
| 92 ><A | |
| 93 HREF="sdldelay.html" | |
| 94 >SDL_Delay</A | |
| 95 > — Wait a specified number of milliseconds before returning.</DT | |
| 96 ><DT | |
| 97 ><A | |
| 98 HREF="sdladdtimer.html" | |
| 99 >SDL_AddTimer</A | |
| 100 > — Add a timer which will call a callback after the specified number of milliseconds has | |
| 101 elapsed.</DT | |
| 102 ><DT | |
| 103 ><A | |
| 104 HREF="sdlremovetimer.html" | |
| 105 >SDL_RemoveTimer</A | |
| 106 > — Remove a timer which was added with | |
| 107 <A | |
| 108 HREF="sdladdtimer.html" | |
| 109 >SDL_AddTimer</A | |
| 110 >.</DT | |
| 111 ><DT | |
| 112 ><A | |
| 113 HREF="sdlsettimer.html" | |
| 114 >SDL_SetTimer</A | |
| 115 > — Set a callback to run after the specified number of milliseconds has | |
| 116 elapsed.</DT | |
| 117 ></DL | |
| 118 ></DIV | |
| 119 ><P | |
| 120 >SDL provides several cross-platform functions for dealing with time. | |
| 121 It provides a way to get the current time, a way to wait a little while, | |
| 122 and a simple timer mechanism. These functions give you two ways of moving an | |
| 123 object every x milliseconds: | |
| 124 | |
| 125 <P | |
| 126 ></P | |
| 127 ><UL | |
| 128 ><LI | |
| 129 ><P | |
| 130 >Use a timer callback function. This may have the bad effect that it runs in a seperate thread or uses alarm signals, but it's easier to implement.</P | |
| 131 ></LI | |
| 132 ><LI | |
| 133 ><P | |
| 134 >Or you can get the number of milliseconds passed, and move the object if, for example, 30 ms passed.</P | |
| 135 ></LI | |
| 136 ></UL | |
| 137 > </P | |
| 138 ></DIV | |
| 139 ><DIV | |
| 140 CLASS="NAVFOOTER" | |
| 141 ><HR | |
| 142 ALIGN="LEFT" | |
| 143 WIDTH="100%"><TABLE | |
| 144 WIDTH="100%" | |
| 145 BORDER="0" | |
| 146 CELLPADDING="0" | |
| 147 CELLSPACING="0" | |
| 148 ><TR | |
| 149 ><TD | |
| 150 WIDTH="33%" | |
| 151 ALIGN="left" | |
| 152 VALIGN="top" | |
| 153 ><A | |
| 154 HREF="sdlcondwaittimeout.html" | |
| 155 >Prev</A | |
| 156 ></TD | |
| 157 ><TD | |
| 158 WIDTH="34%" | |
| 159 ALIGN="center" | |
| 160 VALIGN="top" | |
| 161 ><A | |
| 162 HREF="index.html" | |
| 163 >Home</A | |
| 164 ></TD | |
| 165 ><TD | |
| 166 WIDTH="33%" | |
| 167 ALIGN="right" | |
| 168 VALIGN="top" | |
| 169 ><A | |
| 170 HREF="sdlgetticks.html" | |
| 171 >Next</A | |
| 172 ></TD | |
| 173 ></TR | |
| 174 ><TR | |
| 175 ><TD | |
| 176 WIDTH="33%" | |
| 177 ALIGN="left" | |
| 178 VALIGN="top" | |
| 179 >SDL_CondWaitTimeout</TD | |
| 180 ><TD | |
| 181 WIDTH="34%" | |
| 182 ALIGN="center" | |
| 183 VALIGN="top" | |
| 184 ><A | |
| 185 HREF="reference.html" | |
| 186 >Up</A | |
| 187 ></TD | |
| 188 ><TD | |
| 189 WIDTH="33%" | |
| 190 ALIGN="right" | |
| 191 VALIGN="top" | |
| 192 >SDL_GetTicks</TD | |
| 193 ></TR | |
| 194 ></TABLE | |
| 195 ></DIV | |
| 196 ></BODY | |
| 197 ></HTML | |
| 198 > |