请问怎样在uwp中将控件添加鼠标左键的Holding事件？

Question

我用UserControl新建了一个控件，想获取长按事件，我知道OnHolding只能触摸触发，查了资料，发现GestureRecognizer，但是还是没有触发代码如下

public sealed partial class MyUserControl1 : UserControl
{
        private GestureRecognizer gr;
        public MyUserControl1()
        {
            this.InitializeComponent();
            gr = new GestureRecognizer();
            gr.GestureSettings = GestureSettings.HoldWithMouse;
            gr.Holding += (s, e) => { Debug.WriteLine("Holding!"); };
        }
}

没有打印出Holding，求解答

Answer 1

有人知道吗？

Answer 2

?????

Answer 3

但是我只需要Holding这个动作喔

Answer 4

还是不是很明白，能详细一点吗?

Answer 5

请问有没有具体的例子？

Answer 6

谢谢你回答，原来要ProcessDownEvent、ProcessMoveEvents、ProcessUpEvent都加入参数才能，不过不知道为按下鼠标，一秒左右进入holding，放开鼠标也会进入多一次 holding事件，以下是代码

public MyUserControl1()
        {
            this.InitializeComponent();
            ui = this;
            gr = new GestureRecognizer();
            gr.GestureSettings = GestureSettings.HoldWithMouse;
            this.PointerPressed += MyUserControl1_PointerPressed;
            this.PointerReleased += MyUserControl1_PointerReleased;
            this.PointerMoved += MyUserControl1_PointerMoved;
            this.gr.Holding += (s, e) => { Debug.WriteLine("Hold"); };
        }

        private void MyUserControl1_PointerMoved(object sender, PointerRoutedEventArgs e)
        {
            gr.ProcessMoveEvents(e.GetIntermediatePoints(ui));
        }

        private void MyUserControl1_PointerReleased(object sender, PointerRoutedEventArgs e)
        {
            gr.ProcessUpEvent(e.GetCurrentPoint(ui));
        }

        private void MyUserControl1_PointerPressed(object sender, PointerRoutedEventArgs e)
        {
            gr.ProcessDownEvent(e.GetCurrentPoint(ui));
        }