內容

• 公共函數
• 信號
• 靜態公共成員
• 保護函數
• 宏
• 詳細描述

QMediaAvailabilityControl Class

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

頭：	#include <QMediaAvailabilityControl>
qmake:	QT += multimedia
繼承：	QMediaControl

• 所有成員列錶，包括繼承成員
• 過時成員

公共函數

virtual	~QMediaAvailabilityControl ()
virtual QMultimedia::AvailabilityStatus	availability () const = 0

• 31 公共函數繼承自 QObject

信號

void	availabilityChanged (QMultimedia::AvailabilityStatus availability )

• 2 信號繼承自 QObject

靜態公共成員

const QMetaObject

staticMetaObject

• 9 靜態公共成員繼承自 QObject

保護函數

QMediaAvailabilityControl (QObject * parent = nullptr)

• 9 保護函數繼承自 QObject

宏

QMediaAvailabilityControl_iid

額外繼承成員

• 1 特性繼承自 QObject
• 1 公共槽繼承自 QObject

詳細描述

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

實例化的 QMediaObject (or its derived classes) can report any changes in availability via this control.

接口名稱對於 QMediaAvailabilityControl is org.qt-project.qt.mediaavailabilitycontrol/5.0 作為定義在 QMediaAvailabilityControl_iid .

另請參閱 QMediaService::requestControl () 和 QMediaObject .

成員函數文檔編製

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

Constructs an availability control object with parent .

[虛擬] QMediaAvailabilityControl:: ~QMediaAvailabilityControl ()

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.

宏文檔編製

QMediaAvailabilityControl_iid

org.qt-project.qt.mediaavailabilitycontrol/5.0

定義接口名為 QMediaAvailabilityControl 類。