void window_Loaded(object sender, RoutedEventArgs e) { WindowInteropHelper wih = new WindowInteropHelper(window); hWndSource = HwndSource.FromHwnd(wih.Handle); clipboardWatcher = new ClipboardWatcher(hWndSource.Handle); clipboardWatcher.OnClipboardChanged += new EventHandler(ClipboardChanged); clipboardWatcher.SetClipboardHandle(); hWndSource.AddHook(clipboardWatcher.ReceiveMessage); showHotKey = new GlobalHotkey(Modifiers.Win, Keys.Oemtilde, window, true); showHotKey.HotkeyPressed += new EventHandler <HotkeyEventArgs>(DoOnShowHotKey); if (Settings.Current.WasClosed) { window.Hide(); } }