Event constants
The sensor platform defines the following constants for driver events.
Sensor event types
The sensor platform defines the following sensor event types identifiers.
| Name | Description |
|---|---|
| SENSOR_EVENT_DATA_UPDATED | Indicates that new data is available. |
| SENSOR_EVENT_PROPERTY_CHANGED | Indicates that a property value changed. |
| SENSOR_EVENT_STATE_CHANGED | Indicates a change of operational state, for example, from SENSOR_STATE_INITIALIZING to SENSOR_STATE_READY. |
Sensor event PROPERTYKEYs
The sensor platform defines the following PROPERTYKEYs to identify the parameters for sensor events.
| Name | Description |
|---|---|
| SENSOR_EVENT_PARAMETER_EVENT_ID | Indicates that the GUID value in IPortableDeviceValues is an event type ID, such as SENSOR_EVENT_DATA_UPDATED. |
| SENSOR_EVENT_PARAMETER_STATE | Indicates that the unsigned integer value in IPortableDeviceValues is a sensor state, such as SENSOR_STATE_READY. To raise a state changed event, call ISensorClassExtension::PostStateChange. You do not have to explicitly specify SENSOR_EVENT_PARAMETER_STATE to raise the event. |
Requirements
| Minimum supported client | Windows 7 |
| Minimum supported server | None supported |
| Header | sensors.h |
See also
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