内容

公共函数
信号
静态公共成员
保护函数
宏
详细描述

QAudioRoleControl Class

The QAudioRoleControl class provides control over the audio role of a media object. 更多...

头：	#include <QAudioRoleControl>
qmake:	QT += multimedia
Since:	Qt 5.6
继承：	QMediaControl

公共函数

virtual	~QAudioRoleControl ()
virtual QAudio::Role	audioRole () const = 0
virtual void	setAudioRole (QAudio::Role role ) = 0
virtual QList<QAudio::Role>	supportedAudioRoles () const = 0

31 公共函数继承自 QObject

信号

void	audioRoleChanged (QAudio::Role role )

2 信号继承自 QObject

静态公共成员

const QMetaObject

staticMetaObject

9 静态公共成员继承自 QObject

保护函数

QAudioRoleControl (QObject * parent = nullptr)

9 保护函数继承自 QObject

宏

QAudioRoleControl_iid

额外继承成员

1 特性继承自 QObject
1 公共槽继承自 QObject

详细描述

The QAudioRoleControl class provides control over the audio role of a media object.

若 QMediaService supports audio roles it will implement QAudioRoleControl .

The functionality provided by this control is exposed to application code through the QMediaPlayer 类。

接口名称对于 QAudioRoleControl is org.qt-project.qt.audiorolecontrol/5.6 作为定义在 QAudioRoleControl_iid .

另请参阅 QMediaService::requestControl () 和 QMediaPlayer .

成员函数文档编制

`[protected]` QAudioRoleControl:: QAudioRoleControl ( QObject * parent = nullptr)

构造 QAudioRoleControl 采用给定 parent .

`[虚拟]` QAudioRoleControl:: ~QAudioRoleControl ()

Destroys the audio role control.

`[pure virtual]` QAudio::Role QAudioRoleControl:: audioRole () const

Returns the audio role of the media played by the media service.

另请参阅 setAudioRole ().

`[signal]` void QAudioRoleControl:: audioRoleChanged ( QAudio::Role role )

Signal emitted when the audio role 已改变。

`[pure virtual]` void QAudioRoleControl:: setAudioRole ( QAudio::Role role )

设置音频 role of the media played by the media service.

另请参阅 audioRole ().

`[pure virtual]` QList < QAudio::Role > QAudioRoleControl:: supportedAudioRoles () const

Returns a list of audio roles that the media service supports.

宏文档编制

QAudioRoleControl_iid

org.qt-project.qt.audiorolecontrol/5.6

定义接口名为 QAudioRoleControl 类。

内容