private void afis_m_num_w(System.Drawing.Graphics desen,int x0, int y0, int nr_coloane, int nr_linii, double[,] matrice_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, j;
            for (j = 0; j < nr_linii; j++)
            {
                for (i = 0; i < nr_coloane; i++)
                {
                    desen.DrawString(System.Convert.ToString(matrice_num[j, i]), font_arial, pensula_r, x0+10 + i * 35, y0+25 + j * 20);
                }
            }	
        }