_RegFlushKey

include vmm.h

LONG _RegFlushKey(HKEY hkey)

The specified key is written to the registry file on the disk. This service should be avoided for performance reasons. Windows will automatically flush the registry to the disk. See the documentation for the Win32 function of the same name for additional information.

Returns ERROR_SUCCESS if the function succeeds. Otherwise, an error code is returned, possibly one of the following:

ERROR_KEY_DELETED
ERROR_OUTOFMEMORY
ERROR_BADKEY
ERROR_REGISTRY_IO_FAILED
ERROR_REGISTRY_CORRUPT
ERROR_BADDB

hkey

Handle of an open key or one of the predefined keys:

HKEY_CLASSES_ROOT
HKEY_CURRENT_USER
HKEY_LOCAL_MACHINE
HKEY_USERS
HKEY_CURRENT_CONFIG

Of the predefined key values, only HKEY_LOCAL_MACHINE is available to VxDs during initialization time. The entire registry space can only be accessed after VxD initialization is complete.