谁有手动绘制图形的小例子，能不能分享一个，在这里先谢过了！

//将Target对象外观改为圆形
   GraphicsPath gp = new GraphicsPath() ;
　　  gp.AddEllipse(0, 0, 25, 25) ;
　　  Region r = new Region(gp) ;
   PictureBox TmpSender = (PictureBox)sender ;
　　  TmpSender.Region  = r ;
主要是用GraphicsPath类，

画一个矩形

Some sample Examples:

protected override void OnPaint(PaintEventArgs pe)

{

Graphics g = pe.Graphics ;

Rectangle rect = new Rectangle(50, 30, 100, 100);

LinearGradientBrush lBrush = new LinearGradientBrush(rect, Color.Red,Color.Yellow,

LinearGradientMode.BackwardDiagonal);

g.FillRectangle(lBrush, rect);

}