c# winform画直线画弧线

winform 作为桌面程序,可以开发很多功能强大的程序.

比如画直线:

        private void zpal_MouseUp(object sender, MouseEventArgs e)
        {
            g = zpal.CreateGraphics();
            Pen p = new Pen(Color.Black, 2);
            if (zrdoround.Checked == true)
            {
                g.DrawLine(p, x, y, e.X, e.Y);
            }
        }

画弧线:

        private void zpal_MouseMove(object sender, MouseEventArgs e)
        {
            g = zpal.CreateGraphics();
            Pen p = new Pen(Color.Black, 1);
            if (zrdoarc.Checked == true)
            {
                g.DrawRectangle(p, e.X, e.Y, 1, 1);
            }
        }

思路也非常简单,只需要监控相应的事件即可.