IMDSPStorageGlobals::GetTotalBad method (mswmdm.h)
The GetTotalBad method retrieves the total amount of unusable space on the storage medium, in bytes.
HRESULT GetTotalBad( DWORD *pdwBadLow, DWORD *pdwBadHigh );
Pointer to a DWORD containing the low-order bytes of the unusable space.
Pointer to a DWORD containing the high-order bytes of the unusable space.
The method returns an HRESULT. All the interface methods in Windows Media Device Manager can return any of the following classes of error codes:
- Standard COM error codes
- Windows error codes converted to HRESULT values
- Windows Media Device Manager error codes
To determine the amount of storage space in use by the medium for file management, subtract the number of bad bytes identified by using GetTotalBad from the number of free bytes identified by using GetTotalFree.
This method must be implemented. It must not return WMDM_E_NOTSUPPORTED or E_NOTIMPL. For more information, see Mandatory and Optional Interfaces.