/// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing)
            {
                if (components != null)
                {
                    components.Dispose();
                    components = null;
                }

                if (messageInterceptor != null)
                {
                    messageInterceptor.ReleaseHandle();
                    messageInterceptor = null;
                }
            }
            base.Dispose(disposing);
        }
        private void OnIsBrowserInitializedChanged(object sender, IsBrowserInitializedChangedEventArgs args)
        {
            if (args.IsBrowserInitialized)
            {
                //Get the underlying browser host wrapper
                var browserHost = Browser.GetBrowser().GetHost();
                var requestContext = browserHost.RequestContext;
                string errorMessage;
                // Browser must be initialized before getting/setting preferences
                var success = requestContext.SetPreference("enable_do_not_track", true, out errorMessage);
                if(!success)
                {
                    this.InvokeOnUiThreadIfRequired(() => MessageBox.Show("Unable to set preference enable_do_not_track errorMessage: " + errorMessage));
                }

                //Example of disable spellchecking
                //success = requestContext.SetPreference("browser.enable_spellchecking", false, out errorMessage);

                var preferences = requestContext.GetAllPreferences(true);
                var doNotTrack = (bool)preferences["enable_do_not_track"];

                //Use this to check that settings preferences are working in your code
                //success = requestContext.SetPreference("webkit.webprefs.minimum_font_size", 24, out errorMessage);

                Task.Run(() =>
                {
                    try
                    {
                        while (true)
                        {
                            IntPtr chromeWidgetHostHandle;
                            if (ChromeWidgetHandleFinder.TryFindHandle(browserHandle, out chromeWidgetHostHandle))
                            {
                                messageInterceptor = new ChromeWidgetMessageInterceptor((Control)Browser, chromeWidgetHostHandle, message =>
                                {
                                    const int WM_MOUSEACTIVATE = 0x0021;
                                    const int WM_NCLBUTTONDOWN = 0x00A1;
                                    const int WM_LBUTTONDOWN = 0x0201;

                                    if (message.Msg == WM_MOUSEACTIVATE)
                                    {
                                        // The default processing of WM_MOUSEACTIVATE results in MA_NOACTIVATE,
                                        // and the subsequent mouse click is eaten by Chrome.
                                        // This means any .NET ToolStrip or ContextMenuStrip does not get closed.
                                        // By posting a WM_NCLBUTTONDOWN message to a harmless co-ordinate of the
                                        // top-level window, we rely on the ToolStripManager's message handling
                                        // to close any open dropdowns:
                                        // http://referencesource.microsoft.com/#System.Windows.Forms/winforms/Managed/System/WinForms/ToolStripManager.cs,1249
                                        var topLevelWindowHandle = message.WParam;
                                        PostMessage(topLevelWindowHandle, WM_NCLBUTTONDOWN, IntPtr.Zero, IntPtr.Zero);
                                    }
                                    //Forward mouse button down message to browser control
                                    //else if(message.Msg == WM_LBUTTONDOWN)
                                    //{
                                    //    PostMessage(browserHandle, WM_LBUTTONDOWN, message.WParam, message.LParam);
                                    //}

                                    // The ChromiumWebBrowserControl does not fire MouseEnter/Move/Leave events, because Chromium handles these.
                                    // However we can hook into Chromium's messaging window to receive the events.
                                    //
                                    //const int WM_MOUSEMOVE = 0x0200;
                                    //const int WM_MOUSELEAVE = 0x02A3;
                                    //
                                    //switch (message.Msg) {
                                    //    case WM_MOUSEMOVE:
                                    //        Console.WriteLine("WM_MOUSEMOVE");
                                    //        break;
                                    //    case WM_MOUSELEAVE:
                                    //        Console.WriteLine("WM_MOUSELEAVE");
                                    //        break;
                                    //}
                                });

                                break;
                            }
                            else
                            {
                                // Chrome hasn't yet set up its message-loop window.
                                Thread.Sleep(10);
                            }
                        }
                    }
                    catch
                    {
                        // Errors are likely to occur if browser is disposed, and no good way to check from another thread
                    }
                });
            }
        }