PIBIO_STORAGE_GET_DATABASE_SIZE_FN callback function (winbio_adapter.h)
Called by the Windows Biometric Framework to retrieve the database size and available space.
Syntax
PIBIO_STORAGE_GET_DATABASE_SIZE_FN PibioStorageGetDatabaseSizeFn;
HRESULT PibioStorageGetDatabaseSizeFn(
[in, out] PWINBIO_PIPELINE Pipeline,
[out] PSIZE_T AvailableRecordCount,
[out] PSIZE_T TotalRecordCount
)
{...}
Parameters
[in, out] Pipeline
Pointer to a WINBIO_PIPELINE structure associated with the biometric unit performing the operation.
[out] AvailableRecordCount
Pointer to a variable that receives the number of unused record slots in the database.
[out] TotalRecordCount
Pointer to a variable that receives the number of valid records in the database.
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 |
---|---|
|
A mandatory pointer argument is NULL. |
|
The StorageContext member of the pipeline object is NULL. |
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_adapter.h (include Winbio_adapter.h) |