symbian-qemu-0.9.1-12/libsdl-trunk/docs/html/sdlcdstatus.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_CDStatus</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="CD-ROM"
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HREF="cdrom.html"><LINK
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REL="PREVIOUS"
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TITLE="SDL_CDOpen"
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HREF="sdlcdopen.html"><LINK
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REL="NEXT"
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TITLE="SDL_CDPlay"
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HREF="sdlcdplay.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="sdlcdopen.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="sdlcdplay.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="SDLCDSTATUS"
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></A
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>SDL_CDStatus</H1
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><DIV
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CLASS="REFNAMEDIV"
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><A
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NAME="AEN7308"
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></A
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><H2
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>Name</H2
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>SDL_CDStatus&nbsp;--&nbsp;Returns the current status of the given drive.</DIV
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><DIV
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CLASS="REFSYNOPSISDIV"
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><A
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NAME="AEN7311"
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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="AEN7312"
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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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>CDstatus <B
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CLASS="FSFUNC"
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>SDL_CDStatus</B
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></CODE
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>(SDL_CD *cdrom);</CODE
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></P
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><PRE
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CLASS="FUNCSYNOPSISINFO"
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>/* Given a status, returns true if there's a disk in the drive */
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#define CD_INDRIVE(status)      ((int)status &#62; 0)</PRE
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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="AEN7319"
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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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>This function returns the current status of the given drive. Status is described like so:
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<PRE
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CLASS="PROGRAMLISTING"
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>typedef enum {
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  CD_TRAYEMPTY,
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  CD_STOPPED,
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  CD_PLAYING,
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  CD_PAUSED,
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  CD_ERROR = -1
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} CDstatus;</PRE
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></P
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><P
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>If the drive has a CD in it, the table of contents of the CD and current
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play position of the CD will be stored in the SDL_CD structure.</P
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><P
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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>The macro <TT
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CLASS="LITERAL"
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>CD_INDRIVE</TT
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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> is provided for convenience, 
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and given a status returns true if there's a disk in the drive.</P
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><DIV
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CLASS="NOTE"
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><BLOCKQUOTE
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CLASS="NOTE"
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><P
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><B
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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>Note: </B
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><TT
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CLASS="FUNCTION"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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>SDL_CDStatus</TT
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> also updates the <A
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HREF="sdlcd.html"
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><SPAN
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CLASS="STRUCTNAME"
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>SDL_CD</SPAN
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></A
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> structure passed to it.</P
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></BLOCKQUOTE
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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="AEN7331"
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></A
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><H2
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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>Example</H2
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><PRE
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CLASS="PROGRAMLISTING"
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>int playTrack(int track)
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{
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  int playing = 0;
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  if ( CD_INDRIVE(SDL_CDStatus(cdrom)) ) {
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  /* clamp to the actual number of tracks on the CD */
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    if (track &#62;= cdrom-&#62;numtracks) {
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      track = cdrom-&#62;numtracks-1;
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    }
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2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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    if ( SDL_CDPlayTracks(cdrom, track, 0, 1, 0) == 0 ) {
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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      playing = 1;
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   188
    }
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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  }
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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  return playing;
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}</PRE
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></DIV
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><DIV
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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CLASS="REFSECT1"
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><A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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NAME="AEN7334"
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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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>See Also</H2
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><P
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><A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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HREF="sdlcd.html"
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><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_CD</TT
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></A
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></P
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></DIV
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><DIV
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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CLASS="NAVFOOTER"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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><HR
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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ALIGN="LEFT"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   213
WIDTH="100%"><TABLE
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SUMMARY="Footer 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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><TD
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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><A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   225
HREF="sdlcdopen.html"
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ACCESSKEY="P"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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>Prev</A
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></TD
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
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><A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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HREF="index.html"
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ACCESSKEY="H"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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>Home</A
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></TD
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><TD
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WIDTH="33%"
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ALIGN="right"
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VALIGN="top"
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><A
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HREF="sdlcdplay.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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><TR
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><TD
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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>SDL_CDOpen</TD
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><TD
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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="cdrom.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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ALIGN="right"
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VALIGN="top"
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>SDL_CDPlay</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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>