Light sensor property

The property key for the light sensor.

Property key	Type	Access (R/O, R/W)	Required/Optional	Description
PKEY_LightSensor_ResponseCurve	VT_VECTOR	R/O	Required	The response curve of the light sensor.
DEVPKEY_SensorData_LightLevel_AutoBrightnessPreferred	VT_BOOL	R/O	Optional	The light sensor is preferred for auto-brightness.
DEVPKEY_SensorData_LightLevel_ColorCapable	VT_BOOL	R/O	Optional	Required if supporting chromaticity and light temperature. The light sensor supports light temperature and/or chromaticity x/y.

For more information about the data type shown in the Type column, see PROPVARIANT structure.

Remarks

To use this property key to set the value of its related property, you can use the InitPropVariantFromUInt32Vector function. For example, to set the value for the SENSOR_PROPERTY_MIN_DATA_INTERVAL property using the PKEY_Sensor_MinimumDataInterval_Ms property key, you would use the following syntax:

// Sensor Properties
     if (NT_SUCCESS(Status))
     {
         Status = InitSensorCollection(SENSOR_PROPERTIES_COUNT, &m_pSensorProperties, SensorInstance);
         if (NT_SUCCESS(Status))
         {
               m_Interval = DEFAULT_ACCELEROMETER_REPORT_INTERVAL;
               ...
               ...
               m_pSensorProperties->List[SENSOR_PROPERTY_MIN_DATA_INTERVAL].Key = PKEY_Sensor_MinimumDataInterval_Ms;
               InitPropVariantFromUInt32(ACCELEROMETER_MIN_REPORT_INTERVAL, &(m_pSensorProperties->List[SENSOR_PROPERTY_MIN_DATA_INTERVAL].Value));
               ...
         }
    }

For a complete example of sensor properties being set by using their related property keys, see the client.cpp file in the ADXL345Acc sample driver, and scroll down to the NTSTATUS ADXL345AccDevice::Initialize(...) routine.

Requirements

Header	Sensorsdef.h