
'宣言 Public MustInherit Class ShapeBase
'使用法 Dim instance As ShapeBase
public abstract class ShapeBase
System.Object
C1.Win.C1Document.ShapeBase
C1.Win.C1Document.LineShapeBase
C1.Win.C1Document.RectangleShape
C1.Win.C1Document.TriangleShapeBase