GDI+基础知识——画笔的线帽属性示意

//线帽演示
private void Pen_LineCap_Click(object sender, System.EventArgs e)
{
Graphics graphics = this.CreateGraphics();
graphics.Clear(Color.White);

//设置文本输出对齐方式及字体
StringFormat fmt = new StringFormat();
fmt.Alignment = StringAlignment.Near;
fmt.LineAlignment = StringAlignment.Center;
//字体
Font font = new Font("Arial",12);
SolidBrush sBrush = new SolidBrush(Color.Red);

//创建宽度为15的画笔
Pen pen = new Pen(Color.Black,15);
//分别使用不同的线帽
foreach (LineCap lincap in Enum.GetValues(typeof(LineCap)))
{
pen.StartCap = lincap;//起点
pen.EndCap = lincap;//终点
graphics.DrawLine(pen,50,10,300,10);
//输出当前线帽类型（LineCap枚举成员名）
graphics.DrawString(pen.StartCap.ToString(),
font,sBrush,new Point(320,10),fmt);
//平移绘图平面
graphics.TranslateTransform(0,30);
}
}