T392419114 论坛问题的回答，画一个矩形，并且让矩形可以移动

T392419114 论坛问题的回答，画一个矩形，并且让矩形可以移动 https://bbs.csdn.net/topics/392419114

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

namespace T392419114
{
    public partial class Form1 : Form
    {
        private int x = 100;
        private int y = 100;
        private int w = 120;
        private int h = 80;

        public Form1（）
        {
            InitializeComponent（）;
            pictureBox1.Refresh（）;
        }

        int dx = 0;
        int dy = 0;

        private void pictureBox1_MouseMove（object sender MouseEventArgs e）
        {
            if （e.X >= x && e.X <= x + w && e.Y >= y && e.Y <= y + h）
            {
                this.Cursor = Cursors.Hand;
                if （e.Button == System.Windows.Forms.MouseButtons.Left）
                {
                    x = e.X - dx;
                    y = e.Y - dy;
                    pictureBox1.Refresh（）;
                }
                else
                {
                    dx = e.X - x;
                    dy = e.Y - y;
                }

            }
            else
            {
                if （e.Button == System.Windows.Forms.MouseButtons.None） this.Cursor = Cursors.Default;
            }
        }

        private void pictureBox1_Paint（object sender PaintEventArgs e）
        {
            base.OnPaint（e）;
            Graphics sss = e.Graphics;
            Pen testpen = new Pen（Color.Red 3）;
            sss.DrawRectangle（testpen x y w h）;
        }
    }
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件       9216  2018-07-22 23:42  T392419114\T392419114\bin\Debug\T392419114.exe

     文件      26112  2018-07-22 23:42  T392419114\T392419114\bin\Debug\T392419114.pdb

     文件      11600  2018-07-22 23:22  T392419114\T392419114\bin\Debug\T392419114.vshost.exe

     文件        490  2018-04-12 07:35  T392419114\T392419114\bin\Debug\T392419114.vshost.exe.manifest

     文件       1587  2018-07-22 23:42  T392419114\T392419114\Form1.cs

     文件       2344  2018-07-22 23:31  T392419114\T392419114\Form1.Designer.cs

     文件       5817  2018-07-22 23:31  T392419114\T392419114\Form1.resx

     文件       2867  2018-07-22 23:22  T392419114\T392419114\obj\x86\Debug\DesignTimeResolveAssemblyReferences.cache

     文件       6414  2018-07-22 23:42  T392419114\T392419114\obj\x86\Debug\DesignTimeResolveAssemblyReferencesInput.cache

     文件        792  2018-07-22 23:29  T392419114\T392419114\obj\x86\Debug\T392419114.csproj.FileListAbsolute.txt

     文件        975  2018-07-22 23:31  T392419114\T392419114\obj\x86\Debug\T392419114.csproj.GenerateResource.Cache

     文件       9216  2018-07-22 23:42  T392419114\T392419114\obj\x86\Debug\T392419114.exe

     文件        180  2018-07-22 23:31  T392419114\T392419114\obj\x86\Debug\T392419114.Form1.resources

     文件      26112  2018-07-22 23:42  T392419114\T392419114\obj\x86\Debug\T392419114.pdb

     文件        180  2018-07-22 23:24  T392419114\T392419114\obj\x86\Debug\T392419114.Properties.Resources.resources

     文件        502  2018-07-22 23:22  T392419114\T392419114\Program.cs

     文件       1432  2018-07-22 23:22  T392419114\T392419114\Properties\AssemblyInfo.cs

     文件       2850  2018-07-22 23:22  T392419114\T392419114\Properties\Resources.Designer.cs

     文件       5612  2018-07-22 23:22  T392419114\T392419114\Properties\Resources.resx

     文件       1097  2018-07-22 23:22  T392419114\T392419114\Properties\Settings.Designer.cs

     文件        249  2018-07-22 23:22  T392419114\T392419114\Properties\Settings.settings

     文件       3679  2018-07-22 23:24  T392419114\T392419114\T392419114.csproj

     文件        872  2018-07-22 23:22  T392419114\T392419114.sln

    ..A..H.     18944  2018-07-22 23:43  T392419114\T392419114.suo

     目录          0  2018-07-22 23:22  T392419114\T392419114\obj\x86\Debug\TempPE

     目录          0  2018-07-22 23:42  T392419114\T392419114\obj\x86\Debug

     目录          0  2018-07-22 23:24  T392419114\T392419114\bin\Debug

     目录          0  2018-07-22 23:22  T392419114\T392419114\obj\x86

     目录          0  2018-07-22 23:22  T392419114\T392419114\bin

     目录          0  2018-07-22 23:22  T392419114\T392419114\obj

............此处省略6个文件信息