Edit

PIBIO_STORAGE_QUERY_EXTENDED_INFO_FN callback function (winbio_adapter.h)

  • Article

Called by the Windows Biometric Framework to determine the capabilities and limitations of the biometric storage component.

Syntax

PIBIO_STORAGE_QUERY_EXTENDED_INFO_FN PibioStorageQueryExtendedInfoFn;

HRESULT PibioStorageQueryExtendedInfoFn(
  [in, out] PWINBIO_PIPELINE Pipeline,
  [out]     PWINBIO_EXTENDED_STORAGE_INFO StorageInfo,
  [in]      SIZE_T StorageInfoSize
)
{...}

Parameters

[in, out] Pipeline

Pointer to the WINBIO_PIPELINE structure associated with the biometric unit performing the operation.

[out] StorageInfo

Pointer to the WINBIO_EXTENDED_STORAGE_INFO structure that contains the storage information returned by this function.

[in] StorageInfoSize

The specified size of the storage information.

Return value

If the function succeeds, it returns S_OK. If the function fails, it must return one of the following HRESULT values to indicate the error.

Return code Description
E_POINTER
 The Pipeline and StorageInfo parameters cannot be NULL.
E_INVALIDARG
The StorageInfoSize value is less than the size needed to return the storage information.

Remarks

This method is called once during configuration of the biometric unit.

It will also be called if a client application uses the WinBioGetProperty function to query the value of the WINBIO_PROPERTY_EXTENDED_STORAGE_INFO property.

Requirements

Requirement Value
Minimum supported client Windows 10 [desktop apps only]
Minimum supported server Windows Server 2016 [desktop apps only]
Target Platform Windows
Header winbio_adapter.h (include Winbio_adapter.h)