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我正在使用Microsoft.UI.CompositionWinUI 3 中的命名空间将视觉效果渲染到Canvas如下所示：

 internal Compositor _compositor; // Compositor of Canvas control
 internal ContainerVisual _root; // Container of Canvas control
 var roundedRectangle = _compositor.CreateRoundedRectangleGeometry();
                    roundedRectangle.Size = new Vector2(200, 150);
                    roundedRectangle.CornerRadius = new Vector2(10, 10);

                    var spriteShape = _compositor.CreateSpriteShape(roundedRectangle);
                    spriteShape.FillBrush = _compositor.CreateColorBrush(Colors.Transparent);
                    spriteShape.StrokeBrush = _compositor.CreateColorBrush((Color)Application.Current.Resources["SystemAccentColor"]);
                    spriteShape.StrokeThickness = 2;
                    spriteShape.Offset = new Vector2(2, 2);
                    
                    var shapeVisual = StmVisual._compositor.CreateShapeVisual();
                    shapeVisual.Size = new Vector2(204, 154);
                    shapeVisual.Offset = new Vector3(10, 10, 0);
                    shapeVisual.Shapes.Add(spriteShape);
                    shapeVisual.IsHitTestVisible = true;
                    _root.Children.InsertAtTop(shapeVisual);

但是，当我尝试Canvas使用VisualTreeHelper.FindElementsInHostCoordinates进行测试时，它不会产生任何结果，因为它是 aShapeVisual而不是UIElement。怎么可能命中测试ShapeVisual？我需要深入CanvasGeometry.FillContainsPoint()研究 Win2D 还是有更简单的方法？

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