public class ceas_g
    {
        System.Drawing.Graphics zona_des;
        System.Drawing.SolidBrush radiera = new System.Drawing.SolidBrush(Color.White);
        System.Drawing.Pen c_sec = new System.Drawing.Pen(System.Drawing.Color.Purple);
        System.Drawing.Pen c_min = new System.Drawing.Pen(System.Drawing.Color.Blue);
        System.Drawing.Pen c_5min = new System.Drawing.Pen(System.Drawing.Color.Red);
        System.Drawing.Pen c_ore = new System.Drawing.Pen(System.Drawing.Color.Lime,3);
        int x0;
        int y0;
        int w;

        public void des_ceas()
        {
            int x = x0 + w / 5;
            int y = y0 + w / 5;
            int d = w / 2;
            int x1 = x + d / 2;
            int y1 = y + d / 2;
            double g;
            zona_des.DrawEllipse(c_5min, x, y, d, d);
            for (g = 0; g < 360; g += 6)
            {
                double r = 2 * System.Math.PI * g / 360;
                int x2 = Convert.ToInt16(x1 + (d / 2) * System.Math.Cos(r));
                int y2 = Convert.ToInt16(y1 - (d / 2) * System.Math.Sin(r));
                zona_des.DrawLine(c_min, x1, y1, x2, y2);
                if (g % 30 == 0)
                    zona_des.DrawLine(c_5min, x1, y1, x2, y2);
                else
                    zona_des.DrawLine(c_min, x1, y1, x2, y2);
            }
            zona_des.FillEllipse(radiera, x + 5, y + 5, d - 10, d - 10);
        }

        public void setval(int fus_orar)
        {
            int x = x0 + w / 5;
            int y = y0 + w / 5;
            int d = w / 2;
            int x1 = x + d / 2;
            int y1 = y + d / 2;
            int i, x3, y3;
            double r;

            //secundar
            i = 90 - 6 * System.DateTime.Now.Second;
            r = (2 * System.Math.PI * i) / 360;
            x3 = Convert.ToInt16(x1 + (d / 2 - 6) * System.Math.Cos(r));
            y3 = Convert.ToInt16(y1 - (d / 2 - 6) * System.Math.Sin(r));
            zona_des.FillEllipse(radiera, x + 5, y + 5, d - 10, d - 10);
            zona_des.DrawLine(c_sec, x1, y1, x3, y3);
            //minutar
            i = 90 - 6 * System.DateTime.Now.Minute;
            r = (2 * System.Math.PI * i) / 360;
            x3 = Convert.ToInt16(x1 + (d / 2 - 10) * System.Math.Cos(r));
            y3 = Convert.ToInt16(y1 - (d / 2 - 10) * System.Math.Sin(r));
            zona_des.DrawLine(c_min, x1, y1, x3, y3);
            //ora
            i = 90 - (30 * (System.Convert.ToInt16(System.DateTime.Now.Hour) + fus_orar) + System.Convert.ToInt16(System.DateTime.Now.Minute) / 2);
            r = (2 * System.Math.PI * i) / 360;
            x3 = Convert.ToInt16(x1 + (d / 2 - 15) * System.Math.Cos(r));
            y3 = Convert.ToInt16(y1 - (d / 2 - 15) * System.Math.Sin(r));
            zona_des.DrawLine(c_ore, x1, y1, x3, y3);
            zona_des.DrawEllipse(c_ore, x1 - 2, y1 - 2, 4, 4);
        }
        public ceas_g(System.Drawing.Graphics desen, int pozx, int pozy, int lat)
        {
            zona_des = desen;
            x0 = pozx;
            y0 = pozy;
            w = lat;
        }
    }