GazeDeviceWatcherPreview Class
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Dynamically detects and enumerates eye-tracking devices, and receives event notifications when a device is added, removed, or updated after the initial enumeration.
public ref class GazeDeviceWatcherPreview sealed/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 393216)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
class GazeDeviceWatcherPreview final/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 393216)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
class GazeDeviceWatcherPreview final[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 393216)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
public sealed class GazeDeviceWatcherPreview[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 393216)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
public sealed class GazeDeviceWatcherPreviewPublic NotInheritable Class GazeDeviceWatcherPreview- Inheritance
- Attributes
Windows requirements
| Device family |
Windows 10, version 1803 (introduced in 10.0.17134.0)
|
| API contract |
Windows.Foundation.UniversalApiContract (introduced in v6.0)
|
Methods
| Start() |
Starts monitoring the state of an eye-tracker device. |
| Stop() |
Stops monitoring the state of an eye-tracker device. |
Events
| Added |
Occurs when a new eye-tracker device is detected. |
| EnumerationCompleted |
Occurs when the GazeDeviceWatcherPreview finishes identifying the connected eye-tracker devices. |
| Removed |
Occurs when an existing eye-tracker device is no longer detected. |
| Updated |
Occurs when an update is made to an existing eye-tracker device, such as calibration. |