public static extern NtStatus SamCreateGroupInDomain( [In] IntPtr DomainHandle, [In] ref UnicodeString AccountName, [In] SamGroupAccess DesiredAccess, [Out] out IntPtr GroupHandle, [Out] out int RelativeId );
public static extern NtStatus SamOpenGroup( [In] IntPtr DomainHandle, [In] SamGroupAccess DesiredAccess, [In] int GroupId, [Out] out IntPtr GroupHandle );