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PWINBIO_EVENT_CALLBACK callback function (winbio.h)

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Called by the Windows Biometric Framework to return results from the asynchronous WinBioRegisterEventMonitor function. The client application must implement this function.

Syntax

PWINBIO_EVENT_CALLBACK PwinbioEventCallback;

void PwinbioEventCallback(
  [in, optional] PVOID EventCallbackContext,
  [in]           HRESULT OperationStatus,
  [in]           PWINBIO_EVENT Event
)
{...}

Parameters

[in, optional] EventCallbackContext

Pointer to a buffer defined by the application and passed to the EventCallbackContext parameter of the WinBioRegisterEventMonitor function. The buffer is not modified by the framework or the biometric unit. Your application can use the data to help it determine what actions to perform or to maintain additional information about the biometric capture.

[in] OperationStatus

Error code returned by the capture operation.

[in] Event

Pointer to a WINBIO_EVENT value. For more information, see WINBIO_EVENT Constants.

Return value

None

Requirements

Requirement Value
Minimum supported client Windows 7 [desktop apps only]
Minimum supported server Windows Server 2008 R2 [desktop apps only]
Target Platform Windows
Header winbio.h