private void PickerView_Loaded(object sender, RoutedEventArgs e) { // 获取窗体句柄 m_Hwnd = ((HwndSource)PresentationSource.FromVisual(this)).Handle; HwndSource hWndSource = HwndSource.FromHwnd(m_Hwnd); // 添加处理程序 if (hWndSource != null) { hWndSource.AddHook(WndProc); } HotKeyHelper.DefaultRegisterHotKey(m_Hwnd); }