选择任意位置矩形 截图 并保存至本地图片 完整

using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using System.Runtime.InteropServices;

namespace MyCapture
{
    #region “OLE definitions“
    // STGM
    [Flags（） ComVisible（false）]
    public enum STGM : int
    {
        STGM_DIRECT = 0x0
        STGM_TRANSACTED = 0x10000
        STGM_SIMPLE = 0x8000000
        STGM_READ = 0x0
        STGM_WRITE = 0x1
        STGM_READWRITE = 0x2
        STGM_SHARE_DENY_NONE = 0x40
        STGM_SHARE_DENY_READ = 0x30
        STGM_SHARE_DENY_WRITE = 0x20
        STGM_SHARE_EXCLUSIVE = 0x10
        STGM_PRIORITY = 0x40000
        STGM_DELETEONRELEASE = 0x4000000
        STGM_NOSCRATCH = 0x100000
        STGM_CREATE = 0x1000
        STGM_CONVERT = 0x20000
        STGM_FAIL

 属性            大小     日期    时间   名称
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     文件      27713  2008-04-09 17:33  截屏\Capture\ADDIN.cs

     文件      32054  2008-04-10 11:44  截屏\Capture\Applications Grab.ico

     文件     151552  2008-04-15 17:16  截屏\Capture\bin\Debug\Capture.exe

     文件       1917  2008-04-10 10:50  截屏\Capture\CaptureForm.Designer.cs

     文件       5814  2008-04-10 10:50  截屏\Capture\CaptureForm.resx

     文件       1029  2008-04-10 11:50  截屏\Capture\Form1.cs

     文件       2890  2008-04-10 11:50  截屏\Capture\Form1.Designer.cs

     文件      54200  2008-04-10 11:50  截屏\Capture\Form1.resx

     文件      87201  2008-04-09 17:38  截屏\Capture\MFCAPI.cs

     文件       3898  2008-04-10 11:44  截屏\Capture\MyCapture.csproj

     文件        468  2008-04-09 17:21  截屏\Capture\Program.cs

     文件       1186  2008-04-09 16:10  截屏\Capture\Properties\AssemblyInfo.cs

     文件       2841  2008-04-09 17:21  截屏\Capture\Properties\Resources.Designer.cs

     文件       5612  2008-04-09 16:10  截屏\Capture\Properties\Resources.resx

     文件       1106  2008-04-09 17:21  截屏\Capture\Properties\Settings.Designer.cs

     文件        249  2008-04-09 16:10  截屏\Capture\Properties\Settings.settings

     文件      20194  2008-04-15 17:16  截屏\Capture\CaptureForm.cs

     文件        914  2008-04-09 17:26  截屏\截屏.sln

    ..A..H.     16384  2008-04-15 17:17  截屏\截屏.suo

     目录          0  2008-04-10 11:52  截屏\Capture\bin\Debug

     目录          0  2008-04-09 16:10  截屏\Capture\bin

     目录          0  2008-04-09 17:21  截屏\Capture\Properties

     目录          0  2008-04-10 11:50  截屏\Capture

     目录          0  2008-04-09 16:10  截屏

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