'宣言 Public Class PieCanvas Inherits Microsoft.UI.Xaml.Controls.Canvas Implements Microsoft.UI.Composition.IAnimationObject, Microsoft.UI.Composition.IVisualElement, Microsoft.UI.Composition.IVisualElement2, WinRT.IWinRTObject
public class PieCanvas : Microsoft.UI.Xaml.Controls.Canvas, Microsoft.UI.Composition.IAnimationObject, Microsoft.UI.Composition.IVisualElement, Microsoft.UI.Composition.IVisualElement2, WinRT.IWinRTObject