public class vumetru
    {
        System.Drawing.Graphics des;
        System.Drawing.Pen creion = new System.Drawing.Pen(System.Drawing.Color.Red);
        System.Drawing.SolidBrush pens_albastra=new System.Drawing.SolidBrush(System.Drawing.Color.Blue);
        System.Drawing.SolidBrush radiera = new System.Drawing.SolidBrush(System.Drawing.Color.LightGray);
        int x0;
        int y0;
        int bw;
        int bh;
        int nrb;

        public void setval(int n)
        {
            int w = nrb * 3*bw+3*bw;
            int h = 3 * bh;
            int x = x0 + 3 * bw;
            int xd = x0 + w - 2 * bw;
            int y = y0 + bh;

            int i;
            des.DrawRectangle(creion, x0, y0, w + 2 * bw, h);
            for (i = 0; i < nrb / 2; i++)
            {
                if (i < n)
                {
                    des.FillRectangle(pens_albastra, x, y, 7 * bw / 3, bh);
                    des.FillRectangle(pens_albastra, xd, y, 7 * bw / 3, bh);

                }
                else
                {
                    des.FillRectangle(radiera, x, y, 7 * bw / 3, bh);
                    des.FillRectangle(radiera, xd, y, 7 * bw / 3, bh);
                }
                des.DrawRectangle(creion, x, y, 7 * bw / 3, bh);
                des.DrawRectangle(creion, xd, y, 7 * bw / 3, bh);
                x += 3 * bw;
                xd -= 3 * bw;

            }
        }
        public vumetru(System.Drawing.Graphics desen, int pozx, int pozy, int bit_w, int bit_h, int nr_biti)
        {
            des = desen;
            x0 = pozx;
            y0 = pozy;
            bw = bit_w;
            bh = bit_h;
            nrb = nr_biti;
        }
    }