C# 自绘窗体

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 Ex12_17
{
    public partial class Form1 : Form
    {
        public Form1（）
        {
            InitializeComponent（）;
        }

        private void Form1_Load（object sender EventArgs e）
        {
            drowWindows（）;
        }

        private void drowWindows（）
        {
            GraphicsPath gp = new GraphicsPath（）;
            Rectangle rect = new Rectangle（new Point（0 0） new Size（this.Width this.Height））;
            gp.AddEllipse（rect）;
            this.Region = new Region（gp）;

            GraphicsPath gpl = new GraphicsPath（）;
  

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2010-04-06 13:10  Ex12_17\
     文件         910  2007-07-11 11:32  Ex12_17.sln
     文件       16384  2007-07-11 11:32  Ex12_17.suo
     目录           0  2010-04-06 13:10  Ex12_17\bin\
     目录           0  2010-04-06 13:10  Ex12_17\bin\Debug\
     文件       20480  2007-07-11 11:32  Ex12_17\bin\Debug\Ex12_17.exe
     文件       22016  2007-07-11 11:32  Ex12_17\bin\Debug\Ex12_17.pdb
     文件        5632  2007-07-11 11:32  Ex12_17\bin\Debug\Ex12_17.vshost.exe
     文件        3221  2007-07-11 11:32  Ex12_17\Ex12_17.csproj
     文件        2377  2007-07-11 11:32  Ex12_17\Form1.cs
     文件        4431  2007-07-11 11:32  Ex12_17\Form1.Designer.cs
     文件        5814  2007-07-11 11:32  Ex12_17\Form1.resx
     目录           0  2010-04-06 13:10  Ex12_17\obj\
     目录           0  2010-04-06 13:10  Ex12_17\obj\Debug\
     文件         842  2007-07-11 11:32  Ex12_17\obj\Debug\Ex12_17.csproj.GenerateResource.Cache
     文件       20480  2007-07-11 11:32  Ex12_17\obj\Debug\Ex12_17.exe
     文件         180  2007-07-11 11:32  Ex12_17\obj\Debug\Ex12_17.Form1.resources
     文件       22016  2007-07-11 11:32  Ex12_17\obj\Debug\Ex12_17.pdb
     文件         180  2007-07-11 11:32  Ex12_17\obj\Debug\Ex12_17.Properties.Resources.resources
     目录           0  2010-04-06 13:10  Ex12_17\obj\Debug\Refactor\
     目录           0  2010-04-06 13:10  Ex12_17\obj\Debug\TempPE\
     文件         268  2007-07-11 11:32  Ex12_17\obj\Ex12_17.csproj.FileList.txt
     文件         466  2007-07-11 11:32  Ex12_17\Program.cs
     目录           0  2010-04-06 13:10  Ex12_17\Properties\
     文件        1162  2007-07-11 11:32  Ex12_17\Properties\AssemblyInfo.cs
     文件        2868  2007-07-11 11:32  Ex12_17\Properties\Resources.Designer.cs
     文件        5612  2007-07-11 11:32  Ex12_17\Properties\Resources.resx
     文件        1090  2007-07-11 11:32  Ex12_17\Properties\Settings.Designer.cs
     文件         249  2007-07-11 11:32  Ex12_17\Properties\Settings.settings