C#窗体四周阴影效果

给窗体四周加上阴影效果

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;
using CCWin;

namespace Irregular
{
    public partial class FrmMain : SkinMain
    {
        public FrmMain（）
        {
            InitializeComponent（）;
        }
    }
}

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

     文件    1561088  2013-04-30 00:04  窗体四边阴影\Irregular\bin\Debug\Irregular.exe

     文件      24064  2013-04-30 00:04  窗体四边阴影\Irregular\bin\Debug\Irregular.pdb

     文件      11600  2013-04-30 00:04  窗体四边阴影\Irregular\bin\Debug\Irregular.vshost.exe

     文件      22528  2013-04-30 00:03  窗体四边阴影\Irregular\bin\Debug\SkinForm.dll

     文件      40448  2013-04-30 00:03  窗体四边阴影\Irregular\bin\Debug\SkinForm.pdb

     文件        381  2013-04-30 00:04  窗体四边阴影\Irregular\FrmMain.cs

     文件       1501  2013-04-30 00:04  窗体四边阴影\Irregular\FrmMain.Designer.cs

     文件       5817  2013-04-30 00:04  窗体四边阴影\Irregular\FrmMain.resx

     文件       4318  2013-04-30 00:04  窗体四边阴影\Irregular\Irregular.csproj

     文件      17315  2013-04-29 23:05  窗体四边阴影\Irregular\obj\x86\Debug\DesignTimeResolveAssemblyReferences.cache

     文件       6704  2013-04-30 00:04  窗体四边阴影\Irregular\obj\x86\Debug\DesignTimeResolveAssemblyReferencesInput.cache

     文件       1220  2013-04-30 00:04  窗体四边阴影\Irregular\obj\x86\Debug\GenerateResource.read.1.tlog

     文件        942  2013-04-30 00:04  窗体四边阴影\Irregular\obj\x86\Debug\GenerateResource.write.1.tlog

     文件       4453  2013-04-30 00:04  窗体四边阴影\Irregular\obj\x86\Debug\Irregular.csproj.FileListAbsolute.txt

     文件    1561088  2013-04-30 00:04  窗体四边阴影\Irregular\obj\x86\Debug\Irregular.exe

     文件        180  2013-04-29 23:04  窗体四边阴影\Irregular\obj\x86\Debug\Irregular.FrmCF.resources

     文件        180  2013-04-29 23:04  窗体四边阴影\Irregular\obj\x86\Debug\Irregular.FrmCs.resources

     文件        180  2013-04-29 23:04  窗体四边阴影\Irregular\obj\x86\Debug\Irregular.FrmIphone.resources

     文件        180  2013-04-30 00:04  窗体四边阴影\Irregular\obj\x86\Debug\Irregular.FrmMain.resources

     文件      36661  2013-04-29 23:04  窗体四边阴影\Irregular\obj\x86\Debug\Irregular.FrmTrank.resources

     文件      24064  2013-04-30 00:04  窗体四边阴影\Irregular\obj\x86\Debug\Irregular.pdb

     文件    1553245  2013-04-30 00:04  窗体四边阴影\Irregular\obj\x86\Debug\Irregular.Properties.Resources.resources

     文件      11255  2013-04-30 00:03  窗体四边阴影\Irregular\obj\x86\Debug\ResolveAssemblyReference.cache

     文件       5120  2012-12-26 00:27  窗体四边阴影\Irregular\obj\x86\Debug\TempPE\Properties.Resources.Designer.cs.dll

     文件        492  2013-01-31 18:19  窗体四边阴影\Irregular\Program.cs

     文件       1360  2012-12-24 00:08  窗体四边阴影\Irregular\Properties\AssemblyInfo.cs

     文件       4115  2012-12-26 00:27  窗体四边阴影\Irregular\Properties\Resources.Designer.cs

     文件       7171  2012-12-26 00:27  窗体四边阴影\Irregular\Properties\Resources.resx

     文件       1094  2012-12-24 00:08  窗体四边阴影\Irregular\Properties\Settings.Designer.cs

     文件        249  2012-12-24 00:08  窗体四边阴影\Irregular\Properties\Settings.settings

............此处省略78个文件信息