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。
| virtual | ~QAudioRoleControl () |
| virtual QAudio::Role | audioRole () const = 0 |
| virtual void | setAudioRole (QAudio::Role role ) = 0 |
| virtual QList<QAudio::Role> | supportedAudioRoles () const = 0 |
| void | audioRoleChanged (QAudio::Role role ) |
| QAudioRoleControl (QObject * parent = nullptr) |
| QAudioRoleControl_iid |
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 .
[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。
[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 ().
[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.
org.qt-project.qt.audiorolecontrol/5.6
定义接口名为 QAudioRoleControl 类。