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。
| virtual | ~QCustomAudioRoleControl () |
| virtual QString | customAudioRole () const = 0 |
| virtual void | setCustomAudioRole (const QString & role ) = 0 |
| virtual QStringList | supportedCustomAudioRoles () const = 0 |
| void | customAudioRoleChanged (const QString & role ) |
| QCustomAudioRoleControl (QObject * parent = nullptr) |
| QCustomAudioRoleControl_iid |
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 .
[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。
[虚拟]
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
)
设置音频 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.
org.qt-project.qt.customaudiorolecontrol/5.11
定义接口名为 QCustomAudioRoleControl 类。