QSensorManager ¶

概要 ¶

详细描述 ¶

Sensor plugins register backends using the registerBackend() 函数。

当 connectToBackend() is called, the createBackend() function will be called.

class QSensorManager ¶

static PySide2.QtSensors.QSensorManager. createBackend ( sensor ) ¶

参数

sensor – QSensor

返回类型

QSensorBackend

Create a backend for sensor . Returns null if no suitable backend exists.

static PySide2.QtSensors.QSensorManager. isBackendRegistered ( type , identifier ) ¶

参数

• type – QByteArray

• identifier – QByteArray

返回类型

bool

Returns true if the backend identified by type and identifier is registered.

This is a convenience method that helps out plugins doing dynamic registration.

static PySide2.QtSensors.QSensorManager. registerBackend ( type , identifier , factory ) ¶

参数

• type – QByteArray

• identifier – QByteArray

• factory – QSensorBackendFactory

Register a sensor for type 。 identifier must be unique.

factory will be asked to create instances of the backend.

static PySide2.QtSensors.QSensorManager. setDefaultBackend ( type , identifier ) ¶

参数

• type – QByteArray

• identifier – QByteArray

Sets or overwrite the sensor type with the backend identifier .

static PySide2.QtSensors.QSensorManager. unregisterBackend ( type , identifier ) ¶

参数

• type – QByteArray

• identifier – QByteArray

Unregister the backend for type with identifier .

Note that this only prevents new instance of the backend from being created. It does not invalidate the existing instances of the backend. The backend code should handle the disappearance of the underlying hardware itself.