c# - 使用 AddManipulator 进行触摸操作

Question

使用 AddManipulator 时，触摸是否路由到新的 Manipulation？当我执行以下操作时，一切正常，但在 TouchLeave 事件之后留下了触摸。因此，例如，如果我进行单指旋转，离开触摸的元素并再次触摸它，它就变成了两指缩放。

private void HV3DTouchDown(object sender, TouchEventArgs e)
{
    Canvas canvas = sender as Canvas
    Manipulation.AddManipulator(canvas, e.TouchDevice.AsManipulator());
    e.Handled = true;
    CaptureTouch(e.TouchDevice);
}

private void HV3DTouchLeave(object sender, TouchEventArgs e)
{
    Canvas canvas = sender as Canvas
    Manipulation.RemoveManipulator(canvas, e.TouchDevice.AsManipulator());
    e.Handled = true;
    ReleaseTouchCapture(e.TouchDevice);
}