QMediaAvailabilityControl Class

The QMediaAvailabilityControl class supplies a control for reporting availability of a service. More...

Header: #include <QMediaAvailabilityControl>
qmake: QT += multimedia
Inherits: QMediaControl

Public Functions

virtual QMultimedia::AvailabilityStatus availability() const = 0
  • 31 public functions inherited from QObject


void availabilityChanged(QMultimedia::AvailabilityStatus availability)

Protected Functions

QMediaAvailabilityControl(QObject *parent = Q_NULLPTR)
  • 9 protected functions inherited from QObject


Additional Inherited Members

  • 1 property inherited from QObject
  • 1 public slot inherited from QObject
  • 11 static public members inherited from QObject

Detailed Description

The QMediaAvailabilityControl class supplies a control for reporting availability of a service.

An instance of QMediaObject (or its derived classes) can report any changes in availability via this control.

The interface name of QMediaAvailabilityControl is org.qt-project.qt.mediaavailabilitycontrol/5.0 as defined in QMediaAvailabilityControl_iid.

See also QMediaService::requestControl() and QMediaObject.

Member Function Documentation

[protected] QMediaAvailabilityControl::QMediaAvailabilityControl(QObject *parent = Q_NULLPTR)

Constructs an availability control object with parent.


Destruct the availability control object.

[pure virtual] QMultimedia::AvailabilityStatus QMediaAvailabilityControl::availability() const

Returns the current availability of this instance of the media service. If the availability changes at run time (for example, some other media client takes all media resources) the availabilityChanges() signal should be emitted.

[signal] void QMediaAvailabilityControl::availabilityChanged(QMultimedia::AvailabilityStatus availability)

Signal emitted when the current availability value changed.

Macro Documentation



Defines the interface name of the QMediaAvailabilityControl class.

© 2016 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners.