内容

• 公共函数
• 信号
• 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

该类已过时。 提供它是为使旧源代码能继续工作。强烈建议不要在新代码中使用它。

该类在 Qt 5.6 引入。

• 所有成员列表，包括继承成员

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

信号

void	audioRoleChanged (QAudio::Role role )

保护函数

QAudioRoleControl (QObject * parent = nullptr)

宏

QAudioRoleControl_iid

详细描述

若 QMediaService supports audio roles it will implement QAudioRoleControl.

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

The interface name of 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)

Construct a QAudioRoleControl with the given parent .

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

Signal emitted when the audio role 已改变。

[virtual] 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 ().

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

Sets the audio 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。