E' giusto il codice. Vorrei che mi definisse un nuovo componente.

codice:
using System;
using System.Collections;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Windows.Forms;

namespace LineaFlusso
{
	public class rectangle : System.ComponentModel.Component
	{
		private System.ComponentModel.Container components = null;
		string nomeImm;
				
		public Point strRect
		{
			set 
			{
				Point p1 = (Point)value;
			}
			get
			{
				return strRect;
			}
		}

		public rectangle(System.ComponentModel.IContainer container)
		{
			container.Add(this);
			InitializeComponent();
		}

		public rectangle()
		{
			InitializeComponent();

		}

		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if(components != null)
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}


		#region Component Designer generated code
		private void InitializeComponent()
		{
			components = new System.ComponentModel.Container();
		}
		#endregion
		protected void OnPaint(PaintEventArgs pe)
		{
			Graphics g = pe.Graphics;
			Pen blackPen = new Pen(Color.Black);
			g.DrawRectangle(blackPen, strRect.X, strRect.Y, 10, 5);
		
		
		}
	}
		 
}