WPF：如何判断鼠标绑定是单击还是双击

Question

我正在使用鼠标绑定在我的视图中监听用户点击，就像这样：

<Path.InputBindings>
            <MouseBinding Gesture="LeftDoubleClick" Command="{Binding DoubleLeftClickProj}" />
            <MouseBinding Gesture="LeftClick" Command="{Binding SingleLeftClick}"/>
</Path.InputBindings>

我每次只需要一种鼠标手势。所以，如果我双击应用程序，我想忽略单击左键的鼠标绑定。可能需要在初始鼠标单击后等待1-2秒，然后决定调用哪个手势。有没有简单的方法来实现这个？

- pnizi

---

没有简单的方法。 - Versatile

Answer 1

我用以下方法使其工作（我使用了一个按钮进行测试，您需要进行适当的调整）。

1. Use Event Handlers

   <Button MouseDoubleClick="Button_MouseDoubleClick" Click="Button_Click"></Button>
   

2. store the DataContext in a static variable

   private static object context;
   public MainWindow()
   {
       InitializeComponent();
       DataContext = new ViewModel();
       context = DataContext;
   }
   

3. Adapt this code (I mainly got it from https://dev59.com/r3NA5IYBdhLWcg3wa9Gp#971676)

   private static DispatcherTimer myClickWaitTimer =
   new DispatcherTimer(
       new TimeSpan(0, 0, 0, 1),
       DispatcherPriority.Background,
       mouseWaitTimer_Tick,
       Dispatcher.CurrentDispatcher);
   
   private void Button_MouseDoubleClick(object sender, MouseButtonEventArgs e)
   {
       // Stop the timer from ticking.
       myClickWaitTimer.Stop();
   
       ((ICommand)DataContext).Execute("DoubleLeftClickProj");
       e.Handled = true;
   }
   
   private void Button_Click(object sender, RoutedEventArgs e)
   {
       myClickWaitTimer.Start();
   }
   
   private static void mouseWaitTimer_Tick(object sender, EventArgs e)
   {
       myClickWaitTimer.Stop();
   
       // Handle Single Click Actions
       ((ICommand)context).Execute("SingleLeftClick");
   }
   

- Breeze