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QSound Class Reference
^{[QtGui module]}

The QSound class provides access to the platform audio facilities. More...

Inherits QObject.

Methods

• __init__ (self, QString filename, QObject parent = None)
• QString fileName (self)
• bool isFinished (self)
• int loops (self)
• int loopsRemaining (self)
• play (self)
• setLoops (self, int)
• stop (self)

Static Methods

• bool isAvailable ()
• play (QString filename)

Qt provides the most commonly required audio operation in GUI applications: asynchronously playing a sound file. This is most easily accomplished using the static play() function:

 QSound.play("mysounds/bells.wav");

Alternatively, create a QSound object from the sound file first and then call the play() slot:

 QSound bells("mysounds/bells.wav");
 bells.play();

Once created a QSound object can be queried for its fileName() and total number of loops() (i.e. the number of times the sound will play). The number of repetitions can be altered using the setLoops() function. While playing the sound, the loopsRemaining() function returns the remaining number of repetitions. Use the isFinished() function to determine whether the sound has finished playing.

Sounds played using a QSound object may use more memory than the static play() function, but it may also play more immediately (depending on the underlying platform audio facilities). Use the static isAvailable() function to determine whether sound facilities exist on the platform. Which facilities that are actually used varies:

Note that QSound does not support resources. This might be fixed in a future Qt version.

Method Documentation

QSound.__init__ (self, QString filename, QObject parent = None)

The parent argument, if not None, causes self to be owned by Qt instead of PyQt.

Constructs a QSound object from the file specified by the given filename and with the given parent.

This may use more memory than the static play() function, but it may also play more immediately (depending on the underlying platform audio facilities).

See also play().

QString QSound.fileName (self)

Returns the filename associated with this QSound object.

See also QSound().

bool QSound.isAvailable ()

Returns true if sound facilities exist on the platform; otherwise returns false.

If no sound is available, all QSound operations work silently and quickly. An application may choose either to notify the user if sound is crucial to the application or to operate silently without bothering the user.

Note: On Windows this always returns true because some sound card drivers do not implement a way to find out whether it is available or not.

bool QSound.isFinished (self)

Returns true if the sound has finished playing; otherwise returns false.

int QSound.loops (self)

Returns the number of times the sound will play.

See also loopsRemaining() and setLoops().

int QSound.loopsRemaining (self)

Returns the remaining number of times the sound will loop (this value decreases each time the sound is played).

See also loops() and isFinished().

QSound.play (QString filename)

Plays the sound stored in the file specified by the given filename.

See also stop(), loopsRemaining(), and isFinished().

QSound.play (self)

This method is also a Qt slot with the C++ signature void play().

This is an overloaded function.

Starts playing the sound specified by this QSound object.

The function returns immediately. Depending on the platform audio facilities, other sounds may stop or be mixed with the new sound. The sound can be played again at any time, possibly mixing or replacing previous plays of the sound.

See also fileName().

QSound.setLoops (self, int)

Sets the sound to repeat the given number of times when it is played.

See also loops().

QSound.stop (self)

This method is also a Qt slot with the C++ signature void stop().

Stops the sound playing.

See also play().