visitor.cs

苏金明编写的《用VB.NET和VC#.NET开发交互式CAD系统》一书的源代码

using System;
using System.Drawing;

namespace Visitor
{
	/// <summary>
	/// Visitor 的摘要说明。
	/// </summary>
	public abstract class Visitor
	{
		public Visitor()
		{
		}

		public abstract void toDraw(Graphics g, CLine line);
		public abstract void toDraw(Graphics g, CCircle circle);

	}
}