protected override void OnPaint(PaintEventArgs pea)
{
Graphics gs = pea.Graphics;
Rectangle rc = new Rectangle(100,100,100,100);\\自己定义坐标
gs.DrawEllipse(new Pen(Color.Red),rc);
}
{
Graphics gs = pea.Graphics;
Rectangle rc = new Rectangle(100,100,100,100);\\自己定义坐标
gs.DrawEllipse(new Pen(Color.Red),rc);
}
《window forms 高级编程》
这本书错。这些都介绍很详细