rect.cs

CSharp的MDI窗口事例

using System;
using System.Drawing;

namespace MDICSharp
{
	[Serializable]
	public class Rect : MDICSharp.Shape
	{
		public Rect(Point st, Point ep)
		{
			if (st.X < ep.X)
			{
				StartPoint = st;
				EndPoint = ep;
			}
			else
			{
				StartPoint = ep;
				EndPoint = st;
			}
		} // constructor
		public override void DrawShape(Graphics dc, Pen drawPen, Brush brush)
		{
			Rectangle drawArea;
			Size rectSize = new Size((EndPoint.X - StartPoint.X), (EndPoint.Y - StartPoint.Y));
			drawArea = new Rectangle(StartPoint, rectSize);
			Brush b =  new SolidBrush(Color.Red);
			dc.DrawRectangle(drawPen, drawArea);
			dc.FillRectangle(brush, drawArea);
		
			
		}
	}
}