PerceptionStartFaceAuthenticationHandler Delegate

Definition

Namespace:

Windows.Devices.Perception.Provider

Invoked when a PerceptionFaceAuthenticationGroup enters Face Authentication mode.

public delegate bool PerceptionStartFaceAuthenticationHandler(PerceptionFaceAuthenticationGroup ^ sender);

/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.Guid(1954639146, 8336, 18032, 140, 72, 239, 57, 231, 255, 124, 38)]
/// [Windows.Foundation.Metadata.Deprecated("PerceptionStartFaceAuthenticationHandler may be unavailable after Windows Creator Update. Please refer to AVStream on MSDN.", Windows.Foundation.Metadata.DeprecationType.Deprecate, 262144, "Windows.Foundation.UniversalApiContract")]
class PerceptionStartFaceAuthenticationHandler : MulticastDelegate

[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.Guid(1954639146, 8336, 18032, 140, 72, 239, 57, 231, 255, 124, 38)]
[Windows.Foundation.Metadata.Deprecated("PerceptionStartFaceAuthenticationHandler may be unavailable after Windows Creator Update. Please refer to AVStream on MSDN.", Windows.Foundation.Metadata.DeprecationType.Deprecate, 262144, "Windows.Foundation.UniversalApiContract")]
public delegate bool PerceptionStartFaceAuthenticationHandler(PerceptionFaceAuthenticationGroup sender);

var perceptionStartFaceAuthenticationHandlerHandler = function(sender){
/* Your code */
}

Public Delegate Function PerceptionStartFaceAuthenticationHandler(sender As PerceptionFaceAuthenticationGroup) As Boolean 

Parameters

sender

PerceptionFaceAuthenticationGroup

The associated PerceptionFaceAuthenticationGroup that was registered.

Return Value

Boolean

bool

True if the group is ready to preform Face Authentication; otherwise, false.

Attributes

ContractVersionAttribute GuidAttribute DeprecatedAttribute

Windows requirements

Device family	Windows 10 (introduced in 10.0.10240.0)
API contract	Windows.Foundation.UniversalApiContract (introduced in v1.0)

Remarks

All members of the PerceptionFaceAuthenticationGroup are expected to adjust any settings to fully support Face Authentication such as contrast or exposure on the device underlying the IPerceptionFrameProvider members. The handler returns whether or not all members are ready to preform Face Authentication.

If the handler returns true, all members are expected to remain in this mode until the PerceptionStopFaceAuthenticationHandler associated with the group is invoked.

If the handler returns false, the IPerceptionFrameProvider(s) isn't used for face authentication.