CRegKey::Flush
Call this method to write all of the attributes of the open registry key into the registry.
LONG Flush( ) throw( );
Return Value
If the method succeeds, the return value is ERROR_SUCCESS. If the method fails, the return value is a nonzero error code defined in WINERROR.H.
Remarks
For more information, see RegEnumFlush in the Windows SDK.
Requirements
Header: atlbase.h