![](dotnetdiagramimages/C1_WPF_Document_C1_WPF_Document_ShapeBase.png)
'宣言 Public MustInherit Class ShapeBase
'使用法 Dim instance As ShapeBase
public abstract class ShapeBase
System.Object
C1.WPF.Document.ShapeBase
C1.WPF.Document.LineShapeBase
C1.WPF.Document.RectangleShape
C1.WPF.Document.TriangleShapeBase