pinvoke.net: Edit: coredll.RegCreateKeyEx

@msdn=http://search.microsoft.com/search/results.aspx?qu=$$$
@pinvoke=http://pinvoke.net/$$$.htm
@SystemRuntimeInteropServicesHandleRef=http://msdn2.microsoft.com/library/System.Runtime.InteropServices.HandleRef.aspx
@SystemGCKeepAlive=http://msdn2.microsoft.com/library/System.GC.KeepAlive.aspx
Summary: Creates the specified key. If the key already exists in the registry, it is opened.

!!!!C# Signature:
 [DllImport("coredll.dll")] 
 public static extern int RegCreateKeyEx(
   UIntPtr hKey, string lpSubKey, uint dwReserved, string lpClass, 
   uint dwOptions, int samDesired, IntPtr lpSecurityAttributes, 
   out IntPtr phkResult, out RegistryDispositionValue lpdwDisposition);
!!!!User-Defined Types:
 [Flags]
 enum RegistryDispositionValue : uint
 {
   REG_CREATED_NEW_KEY     = 0x00000001, 
   REG_OPENED_EXISTING_KEY = 0x00000002
 }

!!!!Notes:
The .NET Compact Framework does not contain a HandleRef@SystemRuntimeInteropServicesHandleRef type, so it may be necessary to call GC.KeepAlive@SystemGCKeepAlive after calling this function if the calling class wraps the hKey parameter as an unmanaged resource.

!!!!Tips & Tricks:
C#:
 public UIntPtr HKEY_CLASSES_ROOT = (UIntPtr)0x80000000;
 public const int REG_OPTION_NON_VOLATILE = 0;
 :::
 int iResult;
 IntPtr ipKey = IntPtr.Zero;
 string strRegKeyPath;
 int iDisposition;

iResult = RegCreateKeyEx(HKEY_CLASSES_ROOT, strRegKeyPath, 0,
   null, REG_OPTION_NON_VOLATILE, 0, IntPtr.Zero, out ipKey,
   out iDisposition);
// Z.F.Zeynal
 public enum RootRegKeys : uint
	{
		HKEY_CLASSES_ROOT = 0x8000000,
	        HKEY_CURRENT_USER = 0x80000001,
	        HKEY_LOCAL_MACHINE = 0x80000002,
		HKEY_USERS = 0x80000003
	};

public enum RegValueTypes 
	{
		REG_DWORD = 4,
		REG_SZ = 1
	};
 private uint CreateKey(RootRegKeys rrk, string Path)
		{
			uint nKey = 0;
			uint nDisposition =0;
			int rez = RegCreateKeyEx ((uint) rrk,Path,0,String.Empty,0,0,0,ref nKey,ref nDisposition);
			if (rez != 0) throw new Exception ("Can't create key");
			return nKey; //Key handle
		}

!!!!Alternative Managed API:
CF V2.0 
Microsoft.Win32.Registry.LocalMachine.CreateSubKey(SubKey as string)

Documentation: RegCreateKeyEx@msdn on MSDN