如何在InkCanvas中使用触摸作为输入？

<InkCanvas x:Name="myInkCanvas" />

// 在页面加载完成时注册触摸事件处理程序
myInkCanvas.Loaded += (sender, e) =>
{
    myInkCanvas.PointerPressed += MyInkCanvas_PointerPressed;
    myInkCanvas.PointerMoved += MyInkCanvas_PointerMoved;
    myInkCanvas.PointerReleased += MyInkCanvas_PointerReleased;
};

// 处理触摸按下事件
private void MyInkCanvas_PointerPressed(object sender, PointerRoutedEventArgs e)
{
    // 获取触摸点的位置
    PointerPoint pointerPoint = e.GetCurrentPoint(myInkCanvas);
    Point position = pointerPoint.Position;

    // 在触摸点位置开始绘制
    myInkCanvas.InkPresenter.StrokeContainer.AddStrokeAtPointer(position);
}

// 处理触摸移动事件
private void MyInkCanvas_PointerMoved(object sender, PointerRoutedEventArgs e)
{
    // 获取触摸点的位置
    PointerPoint pointerPoint = e.GetCurrentPoint(myInkCanvas);
    Point position = pointerPoint.Position;

    // 在触摸点位置继续绘制
    myInkCanvas.InkPresenter.StrokeContainer.MoveTo(position);
}

// 处理触摸释放事件
private void MyInkCanvas_PointerReleased(object sender, PointerRoutedEventArgs e)
{
    // 完成绘制
    myInkCanvas.InkPresenter.StrokeContainer.ReleasePointerCaptures();
}