内容

• 公共函数
• 信号
• 保护函数
• 宏
• 详细描述

QCustomAudioRoleControl Class

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

头：	#include <QCustomAudioRoleControl>
qmake:	QT += multimedia
Since:	Qt 5.11
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 5.11 引入。

• 所有成员列表，包括继承成员

公共函数

virtual	~QCustomAudioRoleControl ()
virtual QString	customAudioRole () const = 0
virtual void	setCustomAudioRole (const QString & role ) = 0
virtual QStringList	supportedCustomAudioRoles () const = 0

信号

void	customAudioRoleChanged (const QString & role )

保护函数

QCustomAudioRoleControl (QObject * parent = nullptr)

宏

QCustomAudioRoleControl_iid

详细描述

若 QMediaService supports audio roles it may implement QCustomAudioRoleControl in order to provide access to roles unknown to Qt.

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

The interface name of QCustomAudioRoleControl is org.qt-project.qt.customaudiorolecontrol/5.11 作为定义在 QCustomAudioRoleControl_iid .

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

成员函数文档编制

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

Construct a QCustomAudioRoleControl with the given parent .

[signal] void QCustomAudioRoleControl:: customAudioRoleChanged (const QString & role )

Signal emitted when the audio role 已改变。

[virtual] QCustomAudioRoleControl:: ~QCustomAudioRoleControl ()

Destroys the audio role control.

[pure virtual] QString QCustomAudioRoleControl:: customAudioRole () const

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

另请参阅 setCustomAudioRole ().

[pure virtual] void QCustomAudioRoleControl:: setCustomAudioRole (const QString & role )

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

另请参阅 customAudioRole ().

[pure virtual] QStringList QCustomAudioRoleControl:: supportedCustomAudioRoles () const

Returns a list of custom audio roles that the media service supports. An empty list may indicate that the supported custom audio roles aren't known. The list may not be complete.

宏文档编制

QCustomAudioRoleControl_iid

org.qt-project.qt.customaudiorolecontrol/5.11

定义接口名为 QCustomAudioRoleControl 类。