内容

• 特性
• 公共函数
• 重实现公共函数
• 静态公共成员
• 详细描述
• QDistanceReading 单位

QDistanceReading 类

The QDistanceReading class holds distance reading in cm from the proximity sensor. 更多...

头：	#include <QDistanceReading>
qmake:	QT += sensors
Since:	Qt 5.4
继承：	QSensorReading

• 所有成员列表，包括继承成员
• 过时成员

特性

• distance : const qreal

• 1 特性继承自 QSensorReading
• 1 特性继承自 QObject

公共函数

	QDistanceReading (QObject * parent = DECLARE_READING(QDistanceReading))
virtual	~QDistanceReading ()
qreal	distance () const
void	setDistance (qreal distance )

重实现公共函数

virtual void

copyValuesFrom (QSensorReading * other ) override

• 4 公共函数继承自 QSensorReading
• 31 公共函数继承自 QObject

静态公共成员

const QMetaObject

staticMetaObject

• 9 静态公共成员继承自 QObject

额外继承成员

• 1 公共槽继承自 QObject
• 2 信号继承自 QObject
• 9 保护函数继承自 QObject

详细描述

The QDistanceReading class holds distance reading in cm from the proximity sensor.

The QDistanceReading class holds distance reading in cm from the proximity sensor. Note: Some proximity sensor only support two values for distance, a near and far value. In this case, the sensor should report its maximum range value to represent the far state, and a lesser value to represent the near state.

QDistanceReading 单位

距离以厘米为单位度量

The distance sensor is typically located in the front face of a device, and thus will measure the distance of an object from the device's front face.

特性文档编制

distance : const qreal

对象与设备正面的距离

访问函数：

qreal

distance () const

另请参阅 QDistanceReading 单位 .

成员函数文档编制

QDistanceReading:: QDistanceReading ( QObject * parent = DECLARE_READING(QDistanceReading))

Default constructs an instance of QDistanceReading.

[virtual] QDistanceReading:: ~QDistanceReading ()

Destroys the instance of QDistanceReading. The destructor is virtual.

[override virtual] void QDistanceReading:: copyValuesFrom ( QSensorReading * other )

void QDistanceReading:: setDistance ( qreal distance )

将距离设为 distance .

另请参阅 distance ().