+#if NET_4_0
+ public RegistryKey CreateSubKey (RegistryKey rkey, string keyName, RegistryOptions options)
+ {
+ IntPtr handle = GetHandle (rkey);
+ IntPtr subKeyHandle;
+ int disposition;
+ int result = RegCreateKeyEx (handle , keyName, 0, IntPtr.Zero,
+ options == RegistryOptions.Volatile ? RegOptionsVolatile : RegOptionsNonVolatile,
+ OpenRegKeyRead | OpenRegKeyWrite, IntPtr.Zero, out subKeyHandle, out disposition);
+
+ if (result == Win32ResultCode.MarkedForDeletion)
+ throw RegistryKey.CreateMarkedForDeletionException ();
+
+ if (result != Win32ResultCode.Success)
+ GenerateException (result);
+
+ return new RegistryKey (subKeyHandle, CombineName (rkey, keyName),
+ true);
+ }
+#endif
+