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private void splitContainer2_Panel1_Paint(object sender, PaintEventArgs e)
        {
            // Get the graphics object
            Graphics gfx = e.Graphics;

            // Create a new pen that we shall use for drawing the line
            Pen myPen = new Pen(Color.Red, 5);

            Point p1 = new Point();
            p1.Y = m_NodePositionLinks;

            Point p2 = new Point();
            p2.Y = m_NodePositionRechts;

            gfx.DrawLine(myPen, p1, p2);

            GraphicList.Add(gfx);
        }