// winbio_ioctl.h

typedef struct _WINBIO_CALIBRATION_INFO {
  DWORD       PayloadSize;
  HRESULT     WinBioHresult;
  WINBIO_DATA CalibrationData;
} WINBIO_CALIBRATION_INFO, *PWINBIO_CALIBRATION_INFO;
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Windows Driver Kit DDI reference (ns-winbio_ioctl-_winbio_calibration_info)

_WINBIO_CALIBRATION_INFO structure

Description

The IOCTL_BIOMETRIC_CALIBRATE IOCTL returns the WINBIO_CALIBRATION_INFO 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 for this member.

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.
WINBIO_E_DEVICE_BUSY	The device is in the middle of a vendor-specific operation. This should only be returned when the device cannot be reset, and the vendor-specific operation cannot be canceled.

`CalibrationData`

A structure of type WINBIO_DATA that contains calibration data specific to this sensor. This member is optional.

View the official Windows Driver Kit DDI reference

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