dotnet.org.za

  public partial class LineDrawer : Control
    {
        public LineDrawer()
        {
            InitializeComponent();
        }

        protected override void OnPaint(PaintEventArgs pe)
        {
            base.OnPaint(pe);
            Pen p = new Pen(this.ForeColor);
            pe.Graphics.DrawLine(p, new Point(1, 0), new Point(this.Width, 0));
        }

        protected override void OnResize(EventArgs e)
        {           
            this.Height = 3;
            base.OnResize(e);
        }
    }