WinForm------PanelControl控件中使用Pen类画角圆矩形方法

private void rightPanel_Paint(object sender, PaintEventArgs e)
{
    Graphics g = e.Graphics;
    Pen p = new Pen(Color.FromArgb(,,,));
    p.Width = ;
    DrawRoundRect(g, p,  + nowPicture * , , , , );
}

public void DrawRoundRect(Graphics g, Pen p, float X, float Y, float width, float height, float radius)
{
　　GraphicsPath gp = new GraphicsPath();

　　gp.AddLine(X + radius, Y, X + width - (radius * ), Y);
　　
　　gp.AddArc(X + width - (radius * ), Y, radius * , radius * , , );

　　gp.AddLine(X + width, Y + radius, X + width, Y + height - (radius * ));

　　gp.AddArc(X + width - (radius * ), Y + height - (radius * ), radius * , radius * , , );

　　gp.AddLine(X + width - (radius * ), Y + height, X + radius, Y + height);

　　gp.AddArc(X, Y + height - (radius * ), radius * , radius * , , );

　　gp.AddLine(X, Y + height - (radius * ), X, Y + radius);

　　gp.AddArc(X, Y, radius * , radius * , , );

　　gp.CloseFigure();

　　g.DrawPath(p, gp);
　　gp.Dispose();
}