symbian-qemu-0.9.1-12/libsdl-trunk/docs/man3/SDL_CDStatus.3
author Mike Kinghan <mikek@symbian.org>
Thu, 25 Nov 2010 14:28:39 +0000
branchGCC_SURGE
changeset 135 10852f1a0ae9
parent 1 2fb8b9db1c86
permissions -rw-r--r--
Merge a pointless head that got away.
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.TH "SDL_CDStatus" "3" "Tue 11 Sep 2001, 22:58" "SDL" "SDL API Reference" 
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.SH "NAME"
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SDL_CDStatus \- Returns the current status of the given drive\&.
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.SH "SYNOPSIS"
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.PP
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\fB#include "SDL\&.h"
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.sp
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\fBCDstatus \fBSDL_CDStatus\fP\fR(\fBSDL_CD *cdrom\fR);
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\fB/* Given a status, returns true if there\&'s a disk in the drive */
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#define CD_INDRIVE(status)      ((int)status > 0)
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.SH "DESCRIPTION"
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.PP
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This function returns the current status of the given drive\&. Status is described like so: 
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.PP
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.nf
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\f(CWtypedef 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;\fR
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.fi
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.PP
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.PP
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If the drive has a CD in it, the table of contents of the CD and current play position of the CD will be stored in the SDL_CD structure\&.
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.PP
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The macro \fBCD_INDRIVE\fP is provided for convenience, and given a status returns true if there\&'s a disk in the drive\&.
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.PP
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.RS
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\fBNote:  
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.PP
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\fBSDL_CDStatus\fP also updates the \fI\fBSDL_CD\fR\fR structure passed to it\&.
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.RE
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.SH "EXAMPLE"
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.PP
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.nf
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\f(CWint 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 >= cdrom->numtracks) {
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      track = cdrom->numtracks-1;
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    }
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    if ( SDL_CDPlayTracks(cdrom, track, 0, 1, 0) == 0 ) {
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      playing = 1;
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    }
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  }
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  return playing;
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}\fR
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.fi
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.PP
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.SH "SEE ALSO"
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.PP
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\fI\fBSDL_CD\fP\fR
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...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 22:58