System.Windows.Forms.DrawItemEventArgs.DrawFocusRectangle C# (CSharp) Method

		public virtual void DrawFocusRectangle ()
		{
			//ThemeEngine.Current.DrawOwnerDrawFocusRectangle (this);
		}
	}

 private void cbox_DisplayPictures_DrawItem(object sender, DrawItemEventArgs e)
 {
     if (G_ImageList != null)//判断ImageList是否为空
     {
         Graphics g = e.Graphics;//得到绘图对象
         Rectangle r = e.Bounds;//得到绘图范围
         Size imageSize = G_ImageList.ImageSize;//获取图像大小
         if (e.Index >= 0)//判断是否有绘制项
         {
             Font fn = new Font("宋体", 10, FontStyle.Bold);//创建字体对象
             string s = cbox_DisplayPictures.Items[e.Index].ToString();//得到绘制项的字符串
             DrawItemState dis = e.State;
             if (e.State == (DrawItemState.NoAccelerator | DrawItemState.NoFocusRect))
             {
                 e.Graphics.FillRectangle(new SolidBrush(Color.LightYellow), r);//画条目背景
                 G_ImageList.Draw(e.Graphics, r.Left, r.Top, e.Index);//绘制图像
                 e.Graphics.DrawString(s, fn, new SolidBrush(Color.Black),//显示字符串
                     r.Left + imageSize.Width, r.Top);
                 e.DrawFocusRectangle();//显示取得焦点时的虚线框
             }
             else
             {
                 e.Graphics.FillRectangle(new SolidBrush(Color.LightGreen), r);//画条目背景
                 G_ImageList.Draw(e.Graphics, r.Left, r.Top, e.Index);//绘制图像
                 e.Graphics.DrawString(s, fn, new SolidBrush(Color.Black),//显示字符串
                     r.Left + imageSize.Width, r.Top);
                 e.DrawFocusRectangle();//显示取得焦点时的虚线框
             }
         }
     }
 }