// winbio_ioctl.h

typedef struct _WINBIO_DIAGNOSTICS {
  DWORD                PayloadSize;
  HRESULT              WinBioHresult;
  WINBIO_SENSOR_STATUS SensorStatus;
  WINBIO_DATA          VendorDiagnostics;
} WINBIO_DIAGNOSTICS, *PWINBIO_DIAGNOSTICS;
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Windows Driver Kit DDI reference (ns-winbio_ioctl-_winbio_diagnostics)

_WINBIO_DIAGNOSTICS structure

Description

The IOCTL_BIOMETRIC_GET_SENSOR_STATUS IOCTL returns the WINBIO_DIAGNOSTICS structure as output.

Members

`PayloadSize`

The total size of the payload. This includes the fixed length structure and any variable data at the end.

`WinBioHresult`

The status detail of the I/O operation. This is where WINBIO error and information codes will be passed. The following table shows possible values.

Status value	Description
S_OK	The operation completed successfully.
HRESULT_FROM_NT(STATUS_IO_DEVICE_ERROR)	The driver could not gather the necessary information from the device.

`SensorStatus`

A structure of type WINBIO_SENSOR_STATUS that contains the operating status of the biometric sensor.

`VendorDiagnostics`

An optional WINBIO_DATA structure for vendor-specific additional information.

WINBIO_DIAGNOSTICS - NtDoc