Mercurial > sdl-ios-xcode
view docs/html/sdljoystickopen.html @ 3261:72b542f34739
The new, cleaner, version of the atomic operations. The dummy code is what you should start working with to port atomic ops.
The linux code appears to be complete and *should* be the base of all Unix and GCC based versions. The macosx and win32 versions
are currently just copies of the dummy code. I will begin working on the windows version as soon as this check in is done. I
need someone to work on the Mac OS X version.
I'm afraid that this check in will break QNX (Sorry!)
author | Bob Pendleton <bob@pendleton.com> |
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date | Thu, 17 Sep 2009 20:35:12 +0000 |
parents | 355632dca928 |
children |
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<HTML ><HEAD ><TITLE >SDL_JoystickOpen</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ "><LINK REL="HOME" TITLE="SDL Library Documentation" HREF="index.html"><LINK REL="UP" TITLE="Joystick" HREF="joystick.html"><LINK REL="PREVIOUS" TITLE="SDL_JoystickName" HREF="sdljoystickname.html"><LINK REL="NEXT" TITLE="SDL_JoystickOpened" HREF="sdljoystickopened.html"></HEAD ><BODY CLASS="REFENTRY" BGCOLOR="#FFF8DC" TEXT="#000000" LINK="#0000ee" VLINK="#551a8b" ALINK="#ff0000" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation 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="sdljoystickname.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="sdljoystickopened.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="SDLJOYSTICKOPEN" ></A >SDL_JoystickOpen</H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN6096" ></A ><H2 >Name</H2 >SDL_JoystickOpen -- Opens a joystick for use.</DIV ><DIV CLASS="REFSYNOPSISDIV" ><A NAME="AEN6099" ></A ><H2 >Synopsis</H2 ><DIV CLASS="FUNCSYNOPSIS" ><A NAME="AEN6100" ></A ><P ></P ><PRE CLASS="FUNCSYNOPSISINFO" >#include "SDL.h"</PRE ><P ><CODE ><CODE CLASS="FUNCDEF" >SDL_Joystick *<B CLASS="FSFUNC" >SDL_JoystickOpen</B ></CODE >(int index);</CODE ></P ><P ></P ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN6106" ></A ><H2 >Description</H2 ><P >Opens a joystick for use within SDL. The <TT CLASS="PARAMETER" ><I >index</I ></TT > refers to the N'th joystick in the system. A joystick must be opened before it game be used.</P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN6110" ></A ><H2 >Return Value</H2 ><P >Returns a <SPAN CLASS="STRUCTNAME" >SDL_Joystick</SPAN > structure on success. <SPAN CLASS="RETURNVALUE" >NULL</SPAN > on failure.</P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN6115" ></A ><H2 >Examples</H2 ><P ><PRE CLASS="PROGRAMLISTING" >SDL_Joystick *joy; // Check for joystick if(SDL_NumJoysticks()>0){ // Open joystick joy=SDL_JoystickOpen(0); if(joy) { printf("Opened Joystick 0\n"); printf("Name: %s\n", SDL_JoystickName(0)); printf("Number of Axes: %d\n", SDL_JoystickNumAxes(joy)); printf("Number of Buttons: %d\n", SDL_JoystickNumButtons(joy)); printf("Number of Balls: %d\n", SDL_JoystickNumBalls(joy)); } else printf("Couldn't open Joystick 0\n"); // Close if opened if(SDL_JoystickOpened(0)) SDL_JoystickClose(joy); }</PRE ></P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN6119" ></A ><H2 >See Also</H2 ><P ><A HREF="sdljoystickclose.html" ><TT CLASS="FUNCTION" >SDL_JoystickClose</TT ></A ></P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="sdljoystickname.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="sdljoystickopened.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >SDL_JoystickName</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="joystick.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >SDL_JoystickOpened</TD ></TR ></TABLE ></DIV ></BODY ></HTML >