內容

• 特性
• 公共函數
• 重實現公共函數
• 靜態公共成員
• 詳細描述
• QDistanceReading 單位

QDistanceReading 類

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

頭：	#include <QDistanceReading>
qmake:	QT += sensors
Since:	Qt 5.4
繼承：	QSensorReading

• 所有成員列錶，包括繼承成員
• 過時成員

特性

• distance : const qreal

• 1 特性繼承自 QSensorReading
• 1 特性繼承自 QObject

公共函數

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

重實現公共函數

virtual void

copyValuesFrom (QSensorReading * other ) override

• 4 公共函數繼承自 QSensorReading
• 31 公共函數繼承自 QObject

靜態公共成員

const QMetaObject

staticMetaObject

• 9 靜態公共成員繼承自 QObject

額外繼承成員

• 1 公共槽繼承自 QObject
• 2 信號繼承自 QObject
• 9 保護函數繼承自 QObject

詳細描述

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 單位

距離以厘米為單位度量

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.

特性文檔編製

distance : const qreal

對象與設備正麵的距離

訪問函數：

qreal

distance () const

另請參閱 QDistanceReading 單位 .

成員函數文檔編製

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

Default constructs an instance of QDistanceReading.

[虛擬] QDistanceReading:: ~QDistanceReading ()

Destroys the instance of QDistanceReading. The destructor is virtual.

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

void QDistanceReading:: setDistance ( qreal distance )

將距離設為 distance .

另請參閱 distance ().