DiDeleteDevRegKey

RETERR DiDeleteDevRegKey(LPDEVICE_INFO lpdi, int iFlags)

This API will delete one or both to the registry keys for the sepecified device.

lpdi

A device info struct for del device that is being removed.

iFlags

Flags indicating which registry key(s) to remove.

DIREG_DEV	Delete the hardware registry key for the device. This is a key that exists in the \ENUM\ROOT branch.
DIREG_DRV	Delete the software, or Driver, registry key for the device. This is a key that is in the HKLM\System\CurrentControlSet\Services\Class registry subkey.
DIREG_BOTH	Delete both registry keys for the device.