elif wparam == DBT_DEVICEREMOVECOMPLETE:
            dbch = DEV_BROADCAST_HDR.from_address(lparam)
            if dbch.dbch_devicetype == DBT_DEVTYP_VOLUME:
                dbcv = DEV_BROADCAST_VOLUME.from_address(lparam)
                for driveLetter in DriveLettersFromMask(dbcv.dbcv_unitmask):