c# 鼠标移动一条画好的线,鼠标到了哪里线就跟着到了哪里？

Question

c# 鼠标移动一条画好的线,鼠标到了哪里线就跟着到了哪里？

Answer 1

不是这个意思 我明白你说的 我是用c#写的 先用GDI把表格画好，然后在画一根线 这根线跟随鼠标的移动而移动，我把原代码发过来你帮我看看

Answer 2

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Drawing2D;namespace MPicture
{
    public partial class Form1 : Form
    {
        private Graphics g;
        private string[] strTitle ={ "(00-07)点", "(08-15)点", "(16-23)点" };
        private string[,] strTitle1=new string[3,8];        public Form1()
        {
            InitializeComponent();
        }
        
        private void Form1_Load(object sender, EventArgs e)
        {
            #region 标题
            int k = -1;//临时变量存储1到23的值
            for (int i = 0; i < 3; i++)
            {
                for (int j = 0; j < 8; j++)
                {
                    k++;
                    strTitle1[i,j] = Convert.ToString(k);
                }
            }
            #endregion 标题
        }
        
        #region pictureBox1的相关函数
        private void pictureBox1_Paint(object sender, PaintEventArgs e)
        {
            #region 基本参数
            Graphics g = e.Graphics;
            Pen GreenPen = new Pen(Color.Green, 2);
            Brush brush = GreenPen.Brush;
            GreenPen.DashStyle = DashStyle.Solid;   //定义画线类型为虚线
            #endregion 基本参数            #region 画横线和竖线
            GetHLien(g,pictureBox1,pictureBox1.Height,70,GreenPen,brush);
            GetSLine(g, pictureBox1, pictureBox1.Width, GreenPen, brush, strTitle1,strTitle);
            #endregion 画横线和竖线
            base.OnPaint(e);
        }
        /// <summary>
        /// 画横线
        /// </summary>
        /// <param name="g"></param>
        /// <param name="p1"></param>
        /// <param name="height"></param>
        /// <param name="step"></param>
        /// <param name="Hpen"></param>
        /// <param name="Hbrush"></param>
        private void GetHLien(Graphics g,PictureBox  p1, int height, int step,Pen Hpen,Brush Hbrush)
        {
            int i=0;
            if (g != null)
            {
                for (i = 0; i < height; i += step)
                {
                    g.DrawLine(Hpen, 0, 0 + i, pictureBox1.Right, 0 + i);
                }
            }
        }
        /// <summary>
        /// 画竖线
        /// </summary>
        /// <param name="g"></param>
        /// <param name="p1"></param>
        /// <param name="width">画布的整体宽度</param>
        /// <param name="Spen"></param>
        /// <param name="Sbrush"></param>
        /// <param name="strTitle1">第一列的标题</param>
        /// <param name="strTitle">其他列的标题</param>
        private void GetSLine(Graphics g,PictureBox p1,int width,Pen Spen,Brush Sbrush,string[,]strTitle1 ,string[] strTitle)
        {
            int i,j,m,n;
            Rectangle rect = new Rectangle();
            rect.X = p1.Left;
            rect.Y = p1.Top;
            rect.Width = 0;
            rect.Height = 0;            StringFormat f1 = new StringFormat(StringFormatFlags.LineLimit);
            f1.Alignment = StringAlignment.Center;
            f1.LineAlignment = StringAlignment.Center;            int colWidth = 0;//每列的宽度
            int firstCol = 0;//第一列的宽度            colWidth = (int)((p1.Width-102) / 8);//除第一列的每列的宽度
            firstCol = 102;
            #region 第一列
            g.DrawLine(Spen, 0, 0, 0, p1.Bottom);//第一列
            g.DrawLine(Spen, firstCol, 0, firstCol, p1.Bottom);//第二列
            for (i = 0; i < strTitle .Length; i++)
            {
                rect.Width = firstCol;
                rect.Height = p1.Height / strTitle.Length;
                g.DrawRectangle(Spen, rect);
                g.DrawString(strTitle[i], new Font("黑体", 12), Sbrush, rect, f1);
                rect.Y += rect.Height;
            }
            #endregion  第一列            #region 其他列
            f1.Alignment = StringAlignment.Center;
            f1.LineAlignment = StringAlignment.Far;
            for (i = firstCol + colWidth; i <= width; i += colWidth)
            {
                g.DrawLine(Spen, 0 + i, 0, 0 + i, pictureBox1.Bottom);
            }
            for (i = firstCol + colWidth,m=0; i <= width; i += colWidth,m++)
            {
                rect.X =i-colWidth;
                rect.Width=colWidth;
                rect.Y = 0;
                for (j = rect.Height,n=0; j <= p1.Height; j += rect.Height,n++)
                {
                    g.DrawRectangle(Spen, rect);
                    g.DrawString(strTitle1[n,m], new Font("黑体", 12), Sbrush, rect, f1);
                    rect.Y += rect.Height;
                }
            }
            #endregion 其他列
        }
        #endregion pictureBox1的相关函数        private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
        {
            g = this.pictureBox1.CreateGraphics();
            g.DrawLine(new Pen(Brushes.Red, 1), e.X, 0, e.X, 622);
        }   
    }
}