GDI+基礎知識——畫筆的線帽屬性示意

 

  //線帽示範
  private void Pen_LineCap_Click(object sender, System.EventArgs e)
  {
   Graphics graphics = this.CreateGraphics();
   graphics.Clear(Color.White);

   //設定文本輸出對齊及字型
   StringFormat fmt = new StringFormat();
   fmt.Alignment = StringAlignment.Near;
   fmt.LineAlignment = StringAlignment.Center;
   //字型
   Font font = new Font("Arial",12);
   SolidBrush sBrush = new SolidBrush(Color.Red);

   //建立寬度為15的畫筆
   Pen pen = new Pen(Color.Black,15);
   //分別使用不同的線帽
   foreach (LineCap lincap in Enum.GetValues(typeof(LineCap)))
   {
    pen.StartCap = lincap;//起點
    pen.EndCap = lincap;//終點
    graphics.DrawLine(pen,50,10,300,10);
    //輸出當前線帽類型（LineCap枚舉成員名）
    graphics.DrawString(pen.StartCap.ToString(),
     font,sBrush,new Point(320,10),fmt);
    //平移繪圖平面
    graphics.TranslateTransform(0,30);
   }
  }