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Disabled /dev/event joystick interface by default
author | Sam Lantinga <slouken@lokigames.com> |
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date | Sun, 10 Jun 2001 04:54:53 +0000 |
parents | 74212992fb08 |
children | 55f1f1b3e27d |
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<HTML ><HEAD ><TITLE >Events</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.61 "><LINK REL="HOME" TITLE="SDL Library Documentation" HREF="index.html"><LINK REL="UP" TITLE="SDL Reference" HREF="reference.html"><LINK REL="PREVIOUS" TITLE="SDL_WM_GrabInput" HREF="sdlwmgrabinput.html"><LINK REL="NEXT" TITLE="SDL Event Structures." HREF="eventstructures.html"><META NAME="KEYWORD" CONTENT="events"><META NAME="KEYWORD" CONTENT="function"></HEAD ><BODY CLASS="CHAPTER" BGCOLOR="#FFF8DC" TEXT="#000000" LINK="#0000ee" VLINK="#551a8b" ALINK="#ff0000" ><DIV CLASS="NAVHEADER" ><TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >SDL Library Documentation</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="sdlwmgrabinput.html" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="eventstructures.html" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="CHAPTER" ><H1 ><A NAME="EVENT" >Chapter 8. Events</A ></H1 ><DIV CLASS="TOC" ><DL ><DT ><B >Table of Contents</B ></DT ><DT ><A HREF="event.html#AEN3194" >Introduction</A ></DT ><DT ><A HREF="eventstructures.html" >SDL Event Structures.</A ></DT ><DT ><A HREF="eventfunctions.html" >Event Functions.</A ></DT ></DL ></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="AEN3194" >Introduction</A ></H1 ><P >Event handling allows your application to receive input from the user. Event handling is initalised (along with video) with a call to: <PRE CLASS="PROGRAMLISTING" >SDL_Init(SDL_INIT_VIDEO);</PRE > Interally, SDL stores all the events waiting to be handled in an event queue. Using functions like <A HREF="sdlpollevent.html" ><TT CLASS="FUNCTION" >SDL_PollEvent</TT ></A > and <A HREF="sdlpeepevents.html" ><TT CLASS="FUNCTION" >SDL_PeepEvents</TT ></A > you can observe and handle waiting input events.</P ><P >The key to event handling in SDL is the <A HREF="sdlevent.html" ><SPAN CLASS="STRUCTNAME" >SDL_Event</SPAN ></A > union. The event queue itself is composed of a series of <SPAN CLASS="STRUCTNAME" >SDL_Event</SPAN > unions, one for each waiting event. <SPAN CLASS="STRUCTNAME" >SDL_Event</SPAN > unions are read from the queue with the <TT CLASS="FUNCTION" >SDL_PollEvent</TT > function and it is then up to the application to process the information stored with them.</P ></DIV ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="sdlwmgrabinput.html" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="eventstructures.html" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >SDL_WM_GrabInput</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="reference.html" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >SDL Event Structures.</TD ></TR ></TABLE ></DIV ></BODY ></HTML >