QDistanceReading 类

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

特性

distance : const qreal

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

公共函数

qreal	distance () const
void	setDistance (qreal distance )

4 public functions inherited from QSensorReading
32 公共函数继承自 QObject

额外继承成员

1 公共槽继承自 QObject
2 信号继承自 QObject
11 静态公共成员继承自 QObject
9 保护函数继承自 QObject

详细描述

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

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

void QDistanceReading:: setDistance ( qreal distance )

将距离设为 distance .

另请参阅 distance ().