C#设置双屏显示模式

C#实现在Win7下双屏扩展、双屏复制和停止扩展以及实现在xp下双屏扩展的功能

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ScreenManage
{
    public interface IScreenHelper
    {
        void SetExpandScreen（）;
    }
}

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

     文件       5120  2014-05-22 23:22  TestDoubleScreen\ScreenManage\bin\Debug\ScreenManage.dll

     文件      15872  2014-05-22 23:22  TestDoubleScreen\ScreenManage\bin\Debug\ScreenManage.pdb

     文件        208  2014-05-22 23:10  TestDoubleScreen\ScreenManage\IScreenHelper.cs

     文件       5621  2014-05-22 23:22  TestDoubleScreen\ScreenManage\obj\Debug\DesignTimeResolveAssemblyReferencesInput.cache

     文件        379  2014-05-22 23:21  TestDoubleScreen\ScreenManage\obj\Debug\ScreenManage.csproj.FileListAbsolute.txt

     文件       5120  2014-05-22 23:22  TestDoubleScreen\ScreenManage\obj\Debug\ScreenManage.dll

     文件      15872  2014-05-22 23:22  TestDoubleScreen\ScreenManage\obj\Debug\ScreenManage.pdb

     文件       1380  2014-05-22 23:10  TestDoubleScreen\ScreenManage\Properties\AssemblyInfo.cs

     文件       1071  2014-05-22 23:15  TestDoubleScreen\ScreenManage\ScreenHelper.cs

     文件        689  2014-05-22 23:22  TestDoubleScreen\ScreenManage\ScreenHelperOfWin7.cs

     文件        246  2014-05-22 23:22  TestDoubleScreen\ScreenManage\ScreenHelperOfXp.cs

     文件       2458  2014-05-22 23:13  TestDoubleScreen\ScreenManage\ScreenManage.csproj

     文件       7168  2014-05-22 23:13  TestDoubleScreen\TestDoubleScreen\bin\Debug\TestDoubleScreen.exe

     文件      19968  2014-05-22 23:13  TestDoubleScreen\TestDoubleScreen\bin\Debug\TestDoubleScreen.pdb

     文件      11600  2014-05-22 23:07  TestDoubleScreen\TestDoubleScreen\bin\Debug\TestDoubleScreen.vshost.exe

     文件        490  2010-03-17 22:39  TestDoubleScreen\TestDoubleScreen\bin\Debug\TestDoubleScreen.vshost.exe.manifest

     文件        366  2014-05-22 23:07  TestDoubleScreen\TestDoubleScreen\Form1.cs

     文件       1166  2014-05-22 23:07  TestDoubleScreen\TestDoubleScreen\Form1.Designer.cs

     文件       2152  2014-05-22 23:07  TestDoubleScreen\TestDoubleScreen\obj\x86\Debug\DesignTimeResolveAssemblyReferences.cache

     文件       6244  2014-05-22 23:22  TestDoubleScreen\TestDoubleScreen\obj\x86\Debug\DesignTimeResolveAssemblyReferencesInput.cache

     文件        144  2014-05-22 23:13  TestDoubleScreen\TestDoubleScreen\obj\x86\Debug\GenerateResource.read.1.tlog

     文件        356  2014-05-22 23:13  TestDoubleScreen\TestDoubleScreen\obj\x86\Debug\GenerateResource.write.1.tlog

     文件        726  2014-05-22 23:13  TestDoubleScreen\TestDoubleScreen\obj\x86\Debug\TestDoubleScreen.csproj.FileListAbsolute.txt

     文件       7168  2014-05-22 23:13  TestDoubleScreen\TestDoubleScreen\obj\x86\Debug\TestDoubleScreen.exe

     文件      19968  2014-05-22 23:13  TestDoubleScreen\TestDoubleScreen\obj\x86\Debug\TestDoubleScreen.pdb

     文件        180  2014-05-22 23:13  TestDoubleScreen\TestDoubleScreen\obj\x86\Debug\TestDoubleScreen.Properties.Resources.resources

     文件        497  2014-05-22 23:07  TestDoubleScreen\TestDoubleScreen\Program.cs

     文件       1388  2014-05-22 23:07  TestDoubleScreen\TestDoubleScreen\Properties\AssemblyInfo.cs

     文件       2883  2014-05-22 23:07  TestDoubleScreen\TestDoubleScreen\Properties\Resources.Designer.cs

     文件       5612  2014-05-22 23:07  TestDoubleScreen\TestDoubleScreen\Properties\Resources.resx

............此处省略25个文件信息