BizDraw framework for .NET

using System;
using System.Collections.Generic;
using System.Text;
using System.Reflection;
using System.Runtime.InteropServices;
using Microsoft.Win32;
namespace BizDraw.Interop
{
    public class ComRegistration
    {
        public static void RegisterControl(Type t)
        {
            // Strip off HKEY_CLASSES_ROOT\ from the passed key as I don't need it
            string key = @"CLSID\" + t.GUID.ToString("B");

            // Open the CLSID\{guid} key for write access
            RegistryKey k = Registry.ClassesRoot.OpenSubKey(key, true);
            if (k == null)
                k = Registry.ClassesRoot.CreateSubKey(key);
            if (k == null) return;

            // And create the 'Control' key - this allows it to show up in 
            // the ActiveX control container 
            RegistryKey ctrl = k.CreateSubKey("Control");
            if (ctrl !=null)
                ctrl.Close();

            RegistryKey misc = k.CreateSubKey("MiscStatus");
            if (misc != null)
            {
                misc.SetValue("", "131457", RegistryValueKind.String);
                misc.Close();
            }

            RegistryKey typelibkey = k.CreateSubKey("TypeLib");
            if (typelibkey != null)
            {
                Guid libId = System.Runtime.InteropServices.Marshal.GetTypeLibGuidForAssembly(t.Assembly);
                typelibkey.SetValue("", libId.ToString("B"), RegistryValueKind.String);
                typelibkey.Close();
            }

            RegistryKey versionkey = k.CreateSubKey("Version");
            if (versionkey != null)
            {
                int major;
                int minor;

                System.Runtime.InteropServices.Marshal.GetTypeLibVersionForAssembly(t.Assembly, out major, out minor);

                versionkey.SetValue("", String.Format("{0}.{1}", major, minor));
                versionkey.Close();
            }
            //RegistryKey toolBoxKey = k.CreateSubKey("ToolBoxBitmap32");
            //toolBoxKey.SetValue("", t.Assembly.Location + "\\app.ico");
            //toolBoxKey.Close();

            // Next create the CodeBase entry - needed if not string named and GACced.
            RegistryKey inprocServer32 = k.CreateSubKey ("InprocServer32");
            if (inprocServer32 != null)
            {
                inprocServer32.SetValue("CodeBase", t.Assembly.CodeBase);
                inprocServer32.Close();
            }
            // Finally close the main key
            k.Close();
        }
        public static void UnRegisterControl(Type t)
        {
            string key = @"CLSID\" + t.GUID.ToString("B");

            Registry.ClassesRoot.DeleteSubKeyTree(key);
        }
    }
}