如何利用Graphics画一个带箭头的直线 解决就结贴

Question

drawline(100,0 ,100,100);
drawline(100,100,80,80);
drawline(100,100,120,80);

Answer 1

你可以这样实现：
private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
Graphics g=e.Graphics;
g.SmoothingMode=SmoothingMode.AntiAlias;
g.FillRectangle(Brushes.White,this.ClientRectangle); Pen p=new Pen(Color.Black,5);//此处设置颜色和宽度
p.StartCap=LineCap.Flat;//设置起点为平线帽
p.EndCap=LineCap.ArrowAnchor;//设置终点为箭头状锚点帽
g.DrawLine(p,50,50,150,50);
p.Dispose();
}