private void afis_v_num_w(System.Drawing.Graphics desen,int x0, int y0, int nr_elemente, double[] v_num)
        {
            System.Drawing.SolidBrush pensula_r;
            System.Drawing.Font font_arial;
            pensula_r = new System.Drawing.SolidBrush(System.Drawing.Color.Red);
            font_arial = new System.Drawing.Font("Arial", 8);
            int i;
            for (i = 0; i < nr_elemente; i++)
            {
                desen.DrawString(System.Convert.ToString(v_num[i]), font_arial, pensula_r, x0 + 10 + i * 35, y0 + 25);
            }
        }