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view docs/html/sdljoyaxisevent.html @ 3846:66fb40445587 SDL-ryan-multiple-audio-device

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Removed distinction between "available" and "init" in audio backends, since both had to be checked for success as a pair at the higher level and several of the Available methods were just always-succeed placeholders anyhow. Now the availability check is done in the init code, and the higher level tries all possible drivers until one manages to initialize successfully.
author Ryan C. Gordon <icculus@icculus.org>
date Tue, 17 Oct 2006 09:09:21 +0000
parents 355632dca928
children
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<HTML
><HEAD
><TITLE
>SDL_JoyAxisEvent</TITLE
><META
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><H1
><A
NAME="SDLJOYAXISEVENT"
></A
>SDL_JoyAxisEvent</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN4203"
></A
><H2
>Name</H2
>SDL_JoyAxisEvent&nbsp;--&nbsp;Joystick axis motion event structure</DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN4206"
></A
><H2
>Structure Definition</H2
><PRE
CLASS="PROGRAMLISTING"
>typedef struct{
  Uint8 type;
  Uint8 which;
  Uint8 axis;
  Sint16 value;
} SDL_JoyAxisEvent;</PRE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN4209"
></A
><H2
>Structure Data</H2
><DIV
CLASS="INFORMALTABLE"
><A
NAME="AEN4211"
></A
><P
></P
><TABLE
BORDER="0"
CLASS="CALSTABLE"
><TBODY
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="STRUCTFIELD"
><I
>type</I
></TT
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="LITERAL"
>SDL_JOYAXISMOTION</TT
></TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="STRUCTFIELD"
><I
>which</I
></TT
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>Joystick device index</TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="STRUCTFIELD"
><I
>axis</I
></TT
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>Joystick axis index</TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="STRUCTFIELD"
><I
>value</I
></TT
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>Axis value (range: -32768 to 32767)</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN4231"
></A
><H2
>Description</H2
><P
><SPAN
CLASS="STRUCTNAME"
>SDL_JoyAxisEvent</SPAN
> is a member of the <A
HREF="sdlevent.html"
><SPAN
CLASS="STRUCTNAME"
>SDL_Event</SPAN
></A
> union and is used when an event of type <TT
CLASS="LITERAL"
>SDL_JOYAXISMOTION</TT
> is reported.</P
><P
>A <TT
CLASS="LITERAL"
>SDL_JOYAXISMOTION</TT
> event occurs when ever a user moves an axis on the joystick. The field <TT
CLASS="STRUCTFIELD"
><I
>which</I
></TT
> is the index of the joystick that reported the event and <TT
CLASS="STRUCTFIELD"
><I
>axis</I
></TT
> is the index of the axis (for a more detailed explaination see the <A
HREF="joystick.html"
>Joystick section</A
>). <TT
CLASS="STRUCTFIELD"
><I
>value</I
></TT
> is the current position of the axis.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN4244"
></A
><H2
>See Also</H2
><P
><A
HREF="sdlevent.html"
><SPAN
CLASS="STRUCTNAME"
>SDL_Event</SPAN
></A
>,
<A
HREF="joystick.html"
>Joystick Functions</A
>,
<A
HREF="sdljoystickeventstate.html"
><TT
CLASS="FUNCTION"
>SDL_JoystickEventState</TT
></A
>,
<A
HREF="sdljoystickgetaxis.html"
><TT
CLASS="FUNCTION"
>SDL_JoystickGetAxis</TT
></A
></P
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