symbian-qemu-0.9.1-12/libsdl-trunk/docs/html/sdljoystickgetaxis.html
author johnathan.white@2718R8BGH51.accenture.com
Mon, 08 Mar 2010 18:45:03 +0000
changeset 46 b6935a90ca64
parent 1 2fb8b9db1c86
permissions -rw-r--r--
Modify framebuffer and NGA framebuffer to read screen size from board model dtb file. Optimise memory usuage of frame buffer Add example minigui application with hooks to profiler (which writes results to S:\). Modified NGA framebuffer to run its own dfc queue at high priority
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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<HTML
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><HEAD
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><TITLE
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>SDL_JoystickGetAxis</TITLE
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><META
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NAME="GENERATOR"
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CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
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"><LINK
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REL="HOME"
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TITLE="SDL Library Documentation"
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HREF="index.html"><LINK
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REL="UP"
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TITLE="Joystick"
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HREF="joystick.html"><LINK
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REL="PREVIOUS"
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TITLE="SDL_JoystickUpdate"
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HREF="sdljoystickupdate.html"><LINK
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REL="NEXT"
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TITLE="SDL_JoystickGetHat"
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HREF="sdljoystickgethat.html"></HEAD
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><BODY
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CLASS="REFENTRY"
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BGCOLOR="#FFF8DC"
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TEXT="#000000"
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LINK="#0000ee"
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VLINK="#551a8b"
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ALINK="#ff0000"
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><DIV
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CLASS="NAVHEADER"
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><TABLE
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SUMMARY="Header navigation table"
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WIDTH="100%"
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BORDER="0"
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CELLPADDING="0"
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CELLSPACING="0"
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><TR
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><TH
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COLSPAN="3"
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ALIGN="center"
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>SDL Library Documentation</TH
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></TR
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><TR
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><TD
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WIDTH="10%"
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ALIGN="left"
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VALIGN="bottom"
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><A
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HREF="sdljoystickupdate.html"
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ACCESSKEY="P"
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>Prev</A
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></TD
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><TD
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WIDTH="80%"
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ALIGN="center"
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VALIGN="bottom"
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></TD
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><TD
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WIDTH="10%"
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ALIGN="right"
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VALIGN="bottom"
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><A
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HREF="sdljoystickgethat.html"
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ACCESSKEY="N"
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>Next</A
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></TD
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></TR
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></TABLE
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><HR
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ALIGN="LEFT"
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WIDTH="100%"></DIV
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><H1
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><A
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NAME="SDLJOYSTICKGETAXIS"
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></A
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>SDL_JoystickGetAxis</H1
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><DIV
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CLASS="REFNAMEDIV"
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><A
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NAME="AEN6320"
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></A
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><H2
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>Name</H2
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>SDL_JoystickGetAxis&nbsp;--&nbsp;Get the current state of an axis</DIV
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><DIV
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CLASS="REFSYNOPSISDIV"
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><A
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NAME="AEN6323"
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></A
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><H2
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>Synopsis</H2
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><DIV
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CLASS="FUNCSYNOPSIS"
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><A
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NAME="AEN6324"
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></A
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><P
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></P
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><PRE
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CLASS="FUNCSYNOPSISINFO"
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>#include "SDL.h"</PRE
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><P
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><CODE
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><CODE
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CLASS="FUNCDEF"
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>Sint16 <B
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CLASS="FSFUNC"
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>SDL_JoystickGetAxis</B
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></CODE
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>(SDL_Joystick *joystick, int axis);</CODE
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></P
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><P
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></P
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></DIV
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></DIV
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><DIV
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CLASS="REFSECT1"
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><A
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NAME="AEN6330"
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></A
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><H2
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>Description</H2
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><P
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><TT
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CLASS="FUNCTION"
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>SDL_JoystickGetAxis</TT
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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> returns the current state of the given <TT
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   127
CLASS="PARAMETER"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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><I
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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>axis</I
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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></TT
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   131
> on the given <TT
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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CLASS="PARAMETER"
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><I
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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>joystick</I
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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></TT
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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>.</P
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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><P
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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>On most modern joysticks the X axis is usually represented by <TT
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   139
CLASS="PARAMETER"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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><I
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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>axis</I
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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></TT
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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> 0 and the Y axis by <TT
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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CLASS="PARAMETER"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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><I
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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>axis</I
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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></TT
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   148
> 1. The value returned by <TT
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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CLASS="FUNCTION"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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>SDL_JoystickGetAxis</TT
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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> is a signed integer (-32768 to 32768) representing the current position of the <TT
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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   152
CLASS="PARAMETER"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   153
><I
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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>axis</I
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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></TT
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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>, it maybe necessary to impose certain tolerances on these values to account for jitter. It is worth noting that some joysticks use axes 2 and 3 for extra buttons.</P
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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></DIV
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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><DIV
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   159
CLASS="REFSECT1"
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><A
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   161
NAME="AEN6341"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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></A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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><H2
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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>Return Value</H2
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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><P
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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>Returns a 16-bit signed integer representing the current position of the <TT
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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   167
CLASS="PARAMETER"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   168
><I
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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   169
>axis</I
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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></TT
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   171
>.</P
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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></DIV
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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><DIV
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   174
CLASS="REFSECT1"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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><A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   176
NAME="AEN6345"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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></A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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><H2
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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>Examples</H2
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><P
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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><PRE
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   182
CLASS="PROGRAMLISTING"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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   183
>Sint16 x_move, y_move;
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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   184
SDL_Joystick *joy1;
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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   185
.
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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diff changeset
   186
.
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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   187
x_move=SDL_JoystickGetAxis(joy1, 0);
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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   188
y_move=SDL_JoystickGetAxis(joy1, 1);</PRE
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff changeset
   189
></P
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   190
></DIV
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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   191
><DIV
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   192
CLASS="REFSECT1"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   193
><A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff changeset
   194
NAME="AEN6349"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff changeset
   195
></A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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diff changeset
   196
><H2
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   197
>See Also</H2
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   198
><P
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   199
><A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   200
HREF="sdljoysticknumaxes.html"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   201
><TT
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   202
CLASS="FUNCTION"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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   203
>SDL_JoystickNumAxes</TT
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   204
></A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   205
></P
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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   206
></DIV
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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diff changeset
   207
><DIV
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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   208
CLASS="NAVFOOTER"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff changeset
   209
><HR
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   210
ALIGN="LEFT"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff changeset
   211
WIDTH="100%"><TABLE
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   212
SUMMARY="Footer navigation table"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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diff changeset
   213
WIDTH="100%"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   214
BORDER="0"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   215
CELLPADDING="0"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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   216
CELLSPACING="0"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   217
><TR
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   218
><TD
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   219
WIDTH="33%"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   220
ALIGN="left"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   221
VALIGN="top"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   222
><A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   223
HREF="sdljoystickupdate.html"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   224
ACCESSKEY="P"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   225
>Prev</A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   226
></TD
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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><TD
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   228
WIDTH="34%"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   229
ALIGN="center"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   230
VALIGN="top"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   231
><A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   232
HREF="index.html"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   233
ACCESSKEY="H"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   234
>Home</A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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></TD
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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><TD
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   237
WIDTH="33%"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   238
ALIGN="right"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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VALIGN="top"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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><A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   241
HREF="sdljoystickgethat.html"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   242
ACCESSKEY="N"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   243
>Next</A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   244
></TD
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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></TR
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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><TR
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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><TD
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   248
WIDTH="33%"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   249
ALIGN="left"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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VALIGN="top"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   251
>SDL_JoystickUpdate</TD
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   252
><TD
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
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><A
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HREF="joystick.html"
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ACCESSKEY="U"
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>Up</A
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></TD
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><TD
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WIDTH="33%"
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>SDL_JoystickGetHat</TD
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></TR
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></TABLE
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></DIV
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></BODY
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></HTML
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>