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 |
| qreal | distance () const |
| void | setDistance (qreal distance ) |
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.
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.
對象與設備正麵的距離
訪問函數：
| qreal | distance () const |
另請參閱 QDistanceReading 單位 .
將距離設為 distance .
另請參閱 distance ().
