C# (CSharp) GoF.Composite DrawingElement示例

示例#1

 public abstract void Remove(DrawingElement d);

示例#2

 public override void Remove(DrawingElement d)
 {
     elements.Remove(d);
 }

示例#3

 public abstract void Add(DrawingElement d);

示例#4

 public override void Add(DrawingElement d)
 {
     elements.Add(d);
 }