view docs/html/sdlkeyboardevent.html @ 4165:3b8ac3d311a2 SDL-1.2

Hello. This patch provides basic support for video on the Sony PS3 Linux framebuffer. Scaling, format-conversion, and drawing is done from the SPEs, so there is little performance impact to PPE applications. This is by no means production quality code, but it is a very good start and a good example of how to use the PS3's hardware capabilities to accelerate video playback on the box. The driver has been verified to work with ffplay, mplayer and xine. This piece of software has been developed at the IBM R&D Lab in Boeblingen, Germany and is now returned to the community. Enjoy ! Signed-off-by: D.Herrendoerfer < d.herrendoerfer [at] de [dot] ibm [dot] com >
author Sam Lantinga <slouken@libsdl.org>
date Thu, 02 Apr 2009 04:06:55 +0000
parents 355632dca928
children
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<HTML
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>SDL_KeyboardEvent</TITLE
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><H1
><A
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>SDL_KeyboardEvent</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN4011"
></A
><H2
>Name</H2
>SDL_KeyboardEvent&nbsp;--&nbsp;Keyboard event structure</DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN4014"
></A
><H2
>Structure Definition</H2
><PRE
CLASS="PROGRAMLISTING"
>typedef struct{
  Uint8 type;
  Uint8 state;
  SDL_keysym keysym;
} SDL_KeyboardEvent;</PRE
></DIV
><DIV
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><A
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><H2
>Structure Data</H2
><DIV
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><P
></P
><TABLE
BORDER="0"
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><TBODY
><TR
><TD
ALIGN="LEFT"
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><TT
CLASS="STRUCTFIELD"
><I
>type</I
></TT
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="LITERAL"
>SDL_KEYDOWN</TT
> or <TT
CLASS="LITERAL"
>SDL_KEYUP</TT
></TD
></TR
><TR
><TD
ALIGN="LEFT"
VALIGN="TOP"
><TT
CLASS="STRUCTFIELD"
><I
>state</I
></TT
></TD
><TD
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><TT
CLASS="LITERAL"
>SDL_PRESSED</TT
> or <TT
CLASS="LITERAL"
>SDL_RELEASED</TT
></TD
></TR
><TR
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ALIGN="LEFT"
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><TT
CLASS="STRUCTFIELD"
><I
>keysym</I
></TT
></TD
><TD
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>Contains key press information</TD
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><H2
>Description</H2
><P
><SPAN
CLASS="STRUCTNAME"
>SDL_KeyboardEvent</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_KEYDOWN</TT
> or <TT
CLASS="LITERAL"
>SDL_KEYUP</TT
> is reported.</P
><P
>The <TT
CLASS="STRUCTFIELD"
><I
>type</I
></TT
> and <TT
CLASS="STRUCTFIELD"
><I
>state</I
></TT
> actually report the same information, they just use different values to do it! A keyboard event occurs when a key is released (<TT
CLASS="STRUCTFIELD"
><I
>type</I
></TT
>=<TT
CLASS="LITERAL"
>SDK_KEYUP</TT
> or <TT
CLASS="STRUCTFIELD"
><I
>state</I
></TT
>=<TT
CLASS="LITERAL"
>SDL_RELEASED</TT
>) and when a key is pressed (<TT
CLASS="STRUCTFIELD"
><I
>type</I
></TT
>=<TT
CLASS="LITERAL"
>SDL_KEYDOWN</TT
> or <TT
CLASS="STRUCTFIELD"
><I
>state</I
></TT
>=<TT
CLASS="LITERAL"
>SDL_PRESSED</TT
>). The information on what key was pressed or released is in the <A
HREF="sdlkeysym.html"
><SPAN
CLASS="STRUCTNAME"
>keysym</SPAN
></A
> structure.</P
><DIV
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><BLOCKQUOTE
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><P
><B
>Note: </B
>Repeating <TT
CLASS="LITERAL"
>SDL_KEYDOWN</TT
> events will occur if key repeat is enabled (see <A
HREF="sdlenablekeyrepeat.html"
><TT
CLASS="FUNCTION"
>SDL_EnableKeyRepeat</TT
></A
>).</P
></BLOCKQUOTE
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><H2
>See Also</H2
><P
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><SPAN
CLASS="STRUCTNAME"
>SDL_Event</SPAN
></A
>,
<A
HREF="sdlkeysym.html"
><SPAN
CLASS="STRUCTNAME"
>SDL_keysym</SPAN
></A
>,
<A
HREF="sdlenablekeyrepeat.html"
><TT
CLASS="FUNCTION"
>SDL_EnableKeyRepeat</TT
></A
>,
<A
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><TT
CLASS="FUNCTION"
>SDL_EnableUNICODE</TT
></A
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