'宣言 Public MustInherit Class ShapeBase
'使用法 Dim instance As ShapeBase
public abstract class ShapeBase
'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