用户控件之箭头

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Data;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace Test
{
    public partial class DirectionLine : UserControl
    {
        public DirectionLine()
        {
            InitializeComponent();
        }

        private string caption = "";
        public string Caption
        {
            set { caption = value; }
            get { return caption; }
        }

        private bool hand = false;
        /// <summary>
        /// 是否需手状
        /// </summary>
        public bool Hand
        {
            set { hand = value; }
            get { return hand; }
        }

        private int degrees = 0;
        /// <summary>
        /// 度数
        /// </summary>
        public int Degrees
        {
            set { degrees = value; }
            get { return degrees; }
        }

      
        private int widths = 6;
        /// <summary>
        /// 线条宽度
        /// </summary>
        public int Widths
        {
            set { widths = value; }
            get { return widths; }
        }

        /// <summary>
        /// 起点X坐标
        /// </summary>
        private int x1 = 0;
        public int X1
        {
            set { x1 = value; }
            get { return x1; }
        }

        /// <summary>
        /// 终点X坐标
        /// </summary>
        private int x2 = 100;
        public int X2
        {
            set { x2 = value; }
            get { return x2; }
        }

        private int y1 = 20;
        public int Y1
        {
            set { y1 = value; }
            get { return y1; }
        }

        private int y2 = 20;
        public int Y2
        {
            set { y2 = value; }
            get { return y2; }
        }

        /// <summary>
        /// 标题X坐标
        /// </summary>
        private int captionX = 0;
        public int CaptionX
        {
            set { captionX = value; }
            get { return captionX; }
        }

        private int captionY = 0;
        public int CaptionY
        {
            set { captionY = value; }
            get { return captionY; }
        }

        /// <summary>
        /// 箭头颜色
        /// </summary>
        private Color colors=Color.Blue;
        public Color Colors
        {
            set { colors = value; }
            get { return colors; }
        }

        protected override void OnPaint(PaintEventArgs pe)
        {
            base.OnPaint(pe);

            Graphics g = this.CreateGraphics();

            //单色填充
            //SolidBrush b1 = new SolidBrush(Color.Blue);//定义单色画刷         
            Pen p = new Pen(colors, widths);
            p.DashStyle = DashStyle.Solid;//实线
            p.EndCap = LineCap.ArrowAnchor;//定义线尾的样式为箭头

            g.RotateTransform(degrees);//旋转度数
            g.DrawLine(p, x1, y1, x2, y2);
            g.ResetTransform();//恢复坐标轴坐标

            if (this.Caption != null)
            {
                // 绘制文本
                using (StringFormat f = new StringFormat())
                {
                    // 水平居中对齐
                    f.Alignment = System.Drawing.StringAlignment.Center;
                    // 垂直居中对齐
                    f.LineAlignment = System.Drawing.StringAlignment.Center;
                    // 设置为单行文本
                    f.FormatFlags = System.Drawing.StringFormatFlags.NoWrap;
                    // 绘制文本
                    using (SolidBrush b = new SolidBrush(this.ForeColor))
                    {
                        g.DrawString(
                            this.Caption,
                            this.Font,
                            b, captionX, captionY);
                    }
                }
            }
            g.Dispose();
        }

        protected override void OnMouseMove(MouseEventArgs e)
        {

            // Make the cursor the Hand cursor when the mouse moves
            if (hand)
                Cursor = Cursors.Hand;

            // Call MyBase.OnMouseMove to activate the delegate.
            base.OnMouseMove(e);
        }

        /// <summary>
        /// 处理鼠标单击事件
        /// </summary>
        /// <param name="e"></param>
        protected override void OnClick(EventArgs e)
        {
            base.OnClick(e);
        }

    }
}