C# 调用摄像头拍照保存为图片文件

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 System.Runtime.InteropServices;
using System.Drawing.Imaging;

namespace 调用摄像头
{
    public partial class CameraForm : Form
    {
        private int hHwnd;
        private const int port = 2000;
        public CameraForm（）
        {
            InitializeComponent（）;
        }
        public struct videohdr_tag
        {
            public byte[] lpData;
            public int dwBufferLength;
            public int dwBytesUsed;
            public int dwTimeCaptured;
            public int dwUser;
            public int dwFlags;
            public int[] dwReserved;

      

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2019-05-12 12:24  .vs\
     目录           0  2019-05-12 12:24  .vs\调用摄像头\
     目录           0  2019-05-12 12:24  .vs\调用摄像头\v16\
     文件       41472  2019-04-26 15:09  .vs\调用摄像头\v16\.suo
     目录           0  2019-05-12 12:24  .vs\调用摄像头\v16\Server\
     目录           0  2019-05-12 12:24  .vs\调用摄像头\v16\Server\sqlite3\
     文件           0  2019-04-17 11:55  .vs\调用摄像头\v16\Server\sqlite3\db.lock
     文件      507904  2019-04-17 11:56  .vs\调用摄像头\v16\Server\sqlite3\storage.ide
     目录           0  2019-05-12 12:24  Backup\
     文件         935  2011-11-28 07:49  Backup\调用摄像头.sln
     目录           0  2019-05-12 12:24  Backup\调用摄像头\
     文件        5026  2011-11-28 08:15  Backup\调用摄像头\CameraForm.cs
     文件        4593  2011-11-28 08:15  Backup\调用摄像头\CameraForm.Designer.cs
     文件        5814  2011-11-28 08:15  Backup\调用摄像头\CameraForm.resx
     文件         501  2011-11-28 08:11  Backup\调用摄像头\Program.cs
     目录           0  2019-05-12 12:24  Backup\调用摄像头\Properties\
     文件        1362  2011-11-28 07:49  Backup\调用摄像头\Properties\AssemblyInfo.cs
     文件        2880  2011-11-28 07:49  Backup\调用摄像头\Properties\Resources.Designer.cs
     文件        5612  2011-11-28 07:49  Backup\调用摄像头\Properties\Resources.resx
     文件        1100  2011-11-28 07:49  Backup\调用摄像头\Properties\Settings.Designer.cs
     文件         249  2011-11-28 07:49  Backup\调用摄像头\Properties\Settings.settings
     文件        3766  2011-11-28 08:14  Backup\调用摄像头\调用摄像头.csproj
     文件       40052  2019-04-17 11:55  UpgradeLog.htm
     文件        1151  2019-04-17 11:55  调用摄像头.sln
     文件       13824  2011-11-28 08:15  调用摄像头.suo
     目录           0  2019-05-12 12:24  调用摄像头\
     目录           0  2019-05-12 12:24  调用摄像头\bin\
     目录           0  2019-05-12 12:24  调用摄像头\bin\Debug\
     文件       11264  2019-04-17 11:55  调用摄像头\bin\Debug\调用摄像头.exe
     文件       22016  2019-04-17 11:55  调用摄像头\bin\Debug\调用摄像头.pdb
     文件       14328  2011-11-28 08:15  调用摄像头\bin\Debug\调用摄像头.vshost.exe
............此处省略26个文件信息