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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>QSound Class Reference</h1>
<p>The QSound class provides access to the platform audio facilities.
<a href="#details">More...</a>
<p><tt>#include <<a href="qsound-h.html">qsound.h</a>></tt>
<p>Inherits <a href="qobject.html">QObject</a>.
<p><a href="qsound-members.html">List of all member functions.</a>
<h2>Public Members</h2>
<ul>
<li class=fn><a href="#QSound"><b>QSound</b></a> ( const QString & filename, QObject * parent = 0, const char * name = 0 )</li>
<li class=fn><a href="#~QSound"><b>~QSound</b></a> ()</li>
<li class=fn>int <a href="#loops"><b>loops</b></a> () const</li>
<li class=fn>int <a href="#loopsRemaining"><b>loopsRemaining</b></a> () const</li>
<li class=fn>void <a href="#setLoops"><b>setLoops</b></a> ( int l )</li>
<li class=fn>QString <a href="#fileName"><b>fileName</b></a> () const</li>
<li class=fn>bool <a href="#isFinished"><b>isFinished</b></a> () const</li>
</ul>
<h2>Public Slots</h2>
<ul>
<li class=fn>void <a href="#play-2"><b>play</b></a> ()</li>
<li class=fn>void <a href="#stop"><b>stop</b></a> ()</li>
</ul>
<h2>Static Public Members</h2>
<ul>
<li class=fn>bool <a href="#isAvailable"><b>isAvailable</b></a> ()</li>
<li class=fn>void <a href="#play"><b>play</b></a> ( const QString & filename )</li>
<li class=fn>bool <a href="#available"><b>available</b></a> ()</li>
</ul>
<hr><a name="details"></a><h2>Detailed Description</h2>
The QSound class provides access to the platform audio facilities.
<p>
<p> Qt provides the most commonly required audio operation in GUI
applications: asynchronously playing a sound file. This is most
easily accomplished with a single call:
<pre>
QSound::<a href="#play">play</a>("mysounds/bells.wav");
</pre>
<p> A second API is provided in which a QSound object is created from
a sound file and is played later:
<pre>
QSound bells("mysounds/bells.wav");
bells.<a href="#play">play</a>();
</pre>
<p> Sounds played using the second model may use more memory but play
more immediately than sounds played using the first model,
depending on the underlying platform audio facilities.
<p> On Microsoft Windows the underlying multimedia system is used;
only WAVE format sound files are supported.
<p> On X11 the <a href="ftp://ftp.x.org/contrib/audio/nas/">Network Audio
System</a> is used if available, otherwise all operations work
silently. NAS supports WAVE and AU files.
<p> On Macintosh, ironically, we use QT (<a href="http://quicktime.apple.com">QuickTime</a>) for sound, this
means all QuickTime formats are supported by Qt/Mac.
<p> On Qt/Embedded, a built-in mixing sound server is used, which
accesses <tt>/dev/dsp</tt> directly. Only the WAVE format is supported.
<p> The availability of sound can be tested with
<a href="#isAvailable">QSound::isAvailable</a>().
<p>See also <a href="multimedia.html">Multimedia Classes</a>.
<hr><h2>Member Function Documentation</h2>
<h3 class=fn><a name="QSound"></a>QSound::QSound ( const <a href="qstring.html">QString</a> & filename, <a href="qobject.html">QObject</a> * parent = 0, const char * name = 0 )
</h3>
Constructs a QSound that can quickly play the sound in a file
named <em>filename</em>.
<p> This may use more memory than the static <tt>play</tt> function.
<p> The <em>parent</em> and <em>name</em> arguments (default 0) are passed on to
the <a href="qobject.html">QObject</a> constructor.
<h3 class=fn><a name="~QSound"></a>QSound::~QSound ()
</h3>
Destroys the sound object. If the sound is not finished playing <a href="#stop">stop</a>() is called on it.
<p> <p>See also <a href="#stop">stop</a>() and <a href="#isFinished">isFinished</a>().
<h3 class=fn>bool <a name="available"></a>QSound::available ()<tt> [static]</tt>
</h3>
<p> Returns TRUE if sound support is available; otherwise returns FALSE.
<h3 class=fn><a href="qstring.html">QString</a> <a name="fileName"></a>QSound::fileName () const
</h3>
Returns the filename associated with the sound.
<h3 class=fn>bool <a name="isAvailable"></a>QSound::isAvailable ()<tt> [static]</tt>
</h3>
Returns TRUE if sound facilities exist on the platform; otherwise
returns FALSE. An application may choose either to notify the user
if sound is crucial to the application or to operate silently
without bothering the user.
<p> If no sound is available, all QSound operations work silently and
quickly.
<h3 class=fn>bool <a name="isFinished"></a>QSound::isFinished () const
</h3>
Returns TRUE if the sound has finished playing; otherwise returns FALSE.
<p> <b>Warning:</b> On Windows this function always returns TRUE for unlooped sounds.
<h3 class=fn>int <a name="loops"></a>QSound::loops () const
</h3>
Returns the number of times the sound will play.
<h3 class=fn>int <a name="loopsRemaining"></a>QSound::loopsRemaining () const
</h3>
Returns the number of times the sound will loop. This value
decreases each time the sound loops.
<h3 class=fn>void <a name="play"></a>QSound::play ( const <a href="qstring.html">QString</a> & filename )<tt> [static]</tt>
</h3>
Plays the sound in a file called <em>filename</em>.
<p>Example: <a href="sound-example.html#x2813">sound/sound.cpp</a>.
<h3 class=fn>void <a name="play-2"></a>QSound::play ()<tt> [slot]</tt>
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> Starts the sound playing. The function returns immediately.
Depending on the platform audio facilities, other sounds may stop
or may be mixed with the new sound.
<p> The sound can be played again at any time, possibly mixing or
replacing previous plays of the sound.
<h3 class=fn>void <a name="setLoops"></a>QSound::setLoops ( int l )
</h3>
Sets the sound to repeat <em>l</em> times when it is played. Passing the
value -1 will cause the sound to loop indefinitely.
<p> <p>See also <a href="#loops">loops</a>().
<h3 class=fn>void <a name="stop"></a>QSound::stop ()<tt> [slot]</tt>
</h3>
Stops the sound playing.
<p> On Windows the current loop will finish if a sound is played
in a loop.
<p> <p>See also <a href="#play">play</a>().
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