C# 海康DVR客户端开发系列（2）—— 封装API

前言

　　从上篇文章（10月4日）到本篇文章截止到今天（10月22日）一直在做这个SDK翻译工作，耗时2周半，代码超过1万行，约有三分之二的行数是注释。由于工作忙也只能一天抽出那么半个小时一个小时来整理，所以对关注此系列文章的朋友说句：“抱歉，让大家久等了”。

　　临时决定本系列使用WPF来做例子(买了一本WPF没读 - - #，所以......)，藉此学习下WPF，也进一步熟悉.Net Framework 3.5，落伍的“老兵”奋起追击下相对于“老兵”而言的新技术 :)  

　　其实这篇文章在10月22日就写好了，但是想和视频预览文章一起发布，比较麻烦的是我这边朋友的DVR一直不稳定，一直拖延到今天还是不行，所以还是把本文先发了。因此寻求能提供DVR设备的厂家或者提供DVR远程访问地址的朋友，以支持此系列能顺利的完成，在这里先谢谢了！我的联系方式：13811821337、[email protected]

提醒
　　欢迎转载，但请保留 博客园(www.cnblogs.com)、 农民伯伯(over140.cnblogs.com)的出处，谢谢合作:)


系列
　　1.　　 C# 海康DVR客户端开发系列（1）——准备
　　2.　　 C# 海康DVR客户端开发系列（2）—— 封装API

更新

　　本文会随着后续实践文章有相应的改动，请及时更新！

　　2010-12-21　　HCNetSDK2010-12-21.rar

　　　　主要更新了SerialDataCallBack委托的pRecvDataBuffer参数数据类型，由string改为byte[]，这里感谢badnewfish实践后指出，欢迎大家积极反馈！

　　2009-10-31　　 HCNetSDK2009-10-31.rar

　　　　主要更新了大部分结构体中byte[]初始大小指定，加上了[MarshalAs(UnmanagedType.ByValArray, SizeConst = HCNetSDK.SERIALNO_LEN)]类似的标记。

　　 2009-10-24　　 HCNetSDK.cs

 

正文

　　一、代码截图

  VS 

　　二、 部分代码

　　由于代码过长（超过1W行），这里就不贴全部了，大家直接在更新下面下载最新的SDK即可。

         ///  设置码流速度
         ///   </summary>
         public   const   int  NET_DVR_SETSPEED  =   24 ;
         ///   <summary>
         ///  保持与设备的心跳(如果回调阻塞，建议2秒发送一次)
         ///   </summary>
         public   const   int  NET_DVR_KEEPALIVE  =   25 ;

         // 远程按键定义如下：
         /*  key value send to CONFIG program  */
         public   const   int  KEY_CODE_1  =   1 ;
         public   const   int  KEY_CODE_2  =   2 ;
         public   const   int  KEY_CODE_3  =   3 ;
         public   const   int  KEY_CODE_4  =   4 ;
         public   const   int  KEY_CODE_5  =   5 ;
         public   const   int  KEY_CODE_6  =   6 ;
         public   const   int  KEY_CODE_7  =   7 ;
         public   const   int  KEY_CODE_8  =   8 ;
         public   const   int  KEY_CODE_9  =   9 ;
         public   const   int  KEY_CODE_0  =   10 ;
         public   const   int  KEY_CODE_POWER  =   11 ;
         public   const   int  KEY_CODE_MENU  =   12 ;
         public   const   int  KEY_CODE_ENTER  =   13 ;
         public   const   int  KEY_CODE_CANCEL  =   14 ;
         public   const   int  KEY_CODE_UP  =   15 ;
         public   const   int  KEY_CODE_DOWN  =   16 ;
         public   const   int  KEY_CODE_LEFT  =   17 ;
         public   const   int  KEY_CODE_RIGHT  =   18 ;
         public   const   int  KEY_CODE_EDIT  =   19 ;
         public   const   int  KEY_CODE_ADD  =   20 ;
         public   const   int  KEY_CODE_MINUS  =   21 ;
         public   const   int  KEY_CODE_PLAY  =   22 ;
         public   const   int  KEY_CODE_REC  =   23 ;
         public   const   int  KEY_CODE_PAN  =   24 ;
         public   const   int  KEY_CODE_M  =   25 ;
         public   const   int  KEY_CODE_A  =   26 ;
         public   const   int  KEY_CODE_F1  =   27 ;
         public   const   int  KEY_CODE_F2  =   28 ;

         /*  for PTZ control  */
         public   const   int  KEY_PTZ_UP_START  =  KEY_CODE_UP;
         public   const   int  KEY_PTZ_UP_STOP  =   32 ;

         public   const   int  KEY_PTZ_DOWN_START  =  KEY_CODE_DOWN;
         public   const   int  KEY_PTZ_DOWN_STOP  =   33 ;

         public   const   int  KEY_PTZ_LEFT_START  =  KEY_CODE_LEFT;
         public   const   int  KEY_PTZ_LEFT_STOP  =   34 ;

         public   const   int  KEY_PTZ_RIGHT_START  =  KEY_CODE_RIGHT;
         public   const   int  KEY_PTZ_RIGHT_STOP  =   35 ;

         ///   <summary>
         ///  光圈+
         ///   </summary>
         public   const   int  KEY_PTZ_AP1_START  =  KEY_CODE_EDIT;  /*  光圈+  */
         public   const   int  KEY_PTZ_AP1_STOP  =   36 ;

         ///   <summary>
         ///  光圈-
         ///   </summary>
         public   const   int  KEY_PTZ_AP2_START  =  KEY_CODE_PAN;  /*  光圈-  */
         public   const   int  KEY_PTZ_AP2_STOP  =   37 ;

         ///   <summary>
         ///  聚焦+
         ///   </summary>
         public   const   int  KEY_PTZ_FOCUS1_START  =  KEY_CODE_A;  /*  聚焦+  */
         public   const   int  KEY_PTZ_FOCUS1_STOP  =   38 ;

         ///   <summary>
         ///  聚焦-
         ///   </summary>
         public   const   int  KEY_PTZ_FOCUS2_START  =  KEY_CODE_M; /*  聚焦-  */
         public   const   int  KEY_PTZ_FOCUS2_STOP  =   39 ;

         ///   <summary>
         ///  变倍+
         ///   </summary>
         public   const   int  KEY_PTZ_B1_START  =   40 ;  /*  变倍+  */
         public   const   int  KEY_PTZ_B1_STOP  =   41 ;

         ///   <summary>
         ///  变倍-
         ///   </summary>
         public   const   int  KEY_PTZ_B2_START  =   42 ;  /*  变倍-  */
         public   const   int  KEY_PTZ_B2_STOP  =   43 ;

         // 9000新增
         public   const   int  KEY_CODE_11  =   44 ;
         public   const   int  KEY_CODE_12  =   45 ;
         public   const   int  KEY_CODE_13  =   46 ;
         public   const   int  KEY_CODE_14  =   47 ;
         public   const   int  KEY_CODE_15  =   48 ;
         public   const   int  KEY_CODE_16  =   49 ;

         ///   <summary>
         ///  获取网络应用参数 EMAIL
         ///   </summary>
         public   const   int  NET_DVR_GET_EMAILCFG  =   228 ; //
         ///   <summary>
         ///  设置网络应用参数 EMAIL
         ///   </summary>
         public   const   int  NET_DVR_SET_EMAILCFG  =   229 ;     //
         // 对应NET_DVR_EMAILCFG结构
         //
         public   const   int  NET_DVR_GET_ALLHDCFG  =   300 ;         //
         #region  DS9000新增命令(_V30)
         // 设备编码类型配置(NET_DVR_COMPRESSION_AUDIO结构)
         ///   <summary>
         ///  获取设备语音对讲编码参数
         ///   </summary>
         public   const   int  NET_DVR_GET_COMPRESSCFG_AUD  =   1058 ;      //
         ///   <summary>
         ///  设置设备语音对讲编码参数
         ///   </summary>
         public   const   int  NET_DVR_SET_COMPRESSCFG_AUD  =   1059 ;       //
         #endregion
         ///   <summary>
         ///  预览异常
         ///   </summary>
         public   const   int  NET_DVR_REALPLAYEXCEPTION  =   111 ; //
         ///   <summary>
         ///  预览时连接断开
         ///   </summary>
         public   const   int  NET_DVR_REALPLAYNETCLOSE  =   112 ; //
         ///   <summary>
         ///  预览5s没有收到数据
         ///   </summary>
         public   const   int  NET_DVR_REALPLAY5SNODATA  =   113 ;     //
         ///   <summary>
         ///  预览重连
         ///   </summary>
         public   const   int  NET_DVR_REALPLAYRECONNECT  =   114 ;     //
         ///   <summary>
         ///  回放数据播放完毕
         ///   </summary>
         public   const   int  NET_DVR_PLAYBACKOVER  =   101 ; //
         ///   <summary>
         ///  回放异常
         ///   </summary>
         public   const   int  NET_DVR_PLAYBACKEXCEPTION  =   102 ; //
         ///   <summary>
         ///  回放时候连接断开
         ///   </summary>
         public   const   int  NET_DVR_PLAYBACKNETCLOSE  =   103 ; //
         ///   <summary>
         ///  回放5s没有收到数据
         ///   </summary>
         public   const   int  NET_DVR_PLAYBACK5SNODATA  =   104 ;

         #region  DS-6001D/F
         ///   <summary>
         ///  DS-6001D Decoder
         ///      NET_DVR_DECODERINFO, *LPNET_DVR_DECODERINFO;
         ///   </summary>
         public   struct  NET_DVR_DECODERINFO
        {
             ///   <summary>
             ///  解码设备连接的服务器IP
             ///      public byte byEncoderIP[16];
             ///   </summary>
             public   byte [] byEncoderIP;
             ///   <summary>
             ///  解码设备连接的服务器的用户名
             ///      public byte byEncoderUser[16];
             ///   </summary>
             public   byte [] byEncoderUser;
             ///   <summary>
             ///  解码设备连接的服务器的密码
             ///      public byte byEncoderPasswd[16];
             ///   </summary>
             public   byte [] byEncoderPasswd;
             ///   <summary>
             ///  解码设备连接服务器的连接模式
             ///   </summary>
             public   byte  bySendMode;
             ///   <summary>
             ///  解码设备连接的服务器的通道号
             ///   </summary>
             public   byte  byEncoderChannel;
             ///   <summary>
             ///  解码设备连接的服务器的端口号
             ///   </summary>
             public   ushort  wEncoderPort;
             ///   <summary>
             ///  保留
             ///      public byte reservedData[4];
             ///   </summary>
             public   byte [] reservedData;
        }

         ///   <summary>
         ///  NET_DVR_DECODERSTATE, *LPNET_DVR_DECODERSTATE;
         ///   </summary>
         public   struct  NET_DVR_DECODERSTATE
        {
             ///   <summary>
             ///  解码设备连接的服务器IP
             ///      public byte byEncoderIP[16];
             ///   </summary>
             public   byte [] byEncoderIP;
             ///   <summary>
             ///  解码设备连接的服务器的用户名
             ///      public byte byEncoderUser[16];
             ///   </summary>
             public   byte [] byEncoderUser;
             ///   <summary>
             ///  解码设备连接的服务器的密码
             ///      public byte byEncoderPasswd[16];
             ///   </summary>
             public   byte [] byEncoderPasswd;
             ///   <summary>
             ///  解码设备连接的服务器的通道号
             ///   </summary>
             public   byte  byEncoderChannel;
             ///   <summary>
             ///  解码设备连接的服务器的连接模式
             ///   </summary>
             public   byte  bySendMode;
             ///   <summary>
             ///  解码设备连接的服务器的端口号
             ///   </summary>
             public   ushort  wEncoderPort;
             ///   <summary>
             ///  解码设备连接服务器的状态
             ///   </summary>
             public   uint  dwConnectState;
             ///   <summary>
             ///  保留
             ///      public byte reservedData[4];
             ///   </summary>
             public   byte [] reservedData;
        }

         #region  解码设备控制码定义
         public   const   int  NET_DEC_STARTDEC  =   1 ;
         public   const   int  NET_DEC_STOPDEC  =   2 ;
         public   const   int  NET_DEC_STOPCYCLE  =   3 ;
         public   const   int  NET_DEC_CONTINUECYCLE  =   4 ;
         #endregion


         #endregion

         ///   <summary>
         ///  Email
         ///      NET_DVR_EMAILPARA, *LPNET_DVR_EMAILPARA;
         ///   </summary>
         public   struct  NET_DVR_EMAILPARA
        {
             ///   <summary>
             ///  邮件账号
             ///      public byte sUsername[64];
             ///   </summary>
             public   string  sUsername;
             ///   <summary>
             ///  邮件密码
             ///      public byte sPassword[64];
             ///   </summary>
             public   string  sPassword;
             ///   <summary>
             ///      public byte sSmtpServer[64];
             ///   </summary>
             public   string  sSmtpServer;
             ///   <summary>
             ///      public byte sPop3Server[64];
             ///   </summary>
             public   string  sPop3Server;
             ///   <summary>
             ///  邮件地址
             ///      public byte sMailAddr[64];
             ///   </summary>
             public   string  sMailAddr;
             ///   <summary>
             ///  上传报警/异常等的email
             ///      public byte sEventMailAddr1[64];
             ///   </summary>
             public   byte [] sEventMailAddr1;
             ///   <summary>
             ///      public byte sEventMailAddr2[64];
             ///   </summary>
             public   byte [] sEventMailAddr2;
             ///   <summary>
             ///      public byte res[16];
             ///   </summary>
             public   byte [] res;
        }

         ///   <summary>
         ///  NET_DVR_NETCFG_OTHER, *LPNET_DVR_NETCFG_OTHER;
         ///   </summary>
         public   struct  NET_DVR_NETCFG_OTHER
        {
             public   uint  dwSize;
             ///   <summary>
             ///      char    sFirstDNSIP[16];
             ///   </summary>
             public   string  sFirstDNSIP;
             ///   <summary>
             ///      char    sSecondDNSIP[16];
             ///   </summary>
             public   string  sSecondDNSIP;
             ///   <summary>
             ///  char    sRes[32];
             ///   </summary>
             public   string  sRes;
        }

         ///   <summary>
         ///  连接的通道配置 2007-11-05
         ///      NET_DVR_MATRIX_DECCHANINFO, *LPNET_DVR_MATRIX_DECCHANINFO;
         ///   </summary>
         public   struct  NET_DVR_MATRIX_DECCHANINFO
        {
             ///   <summary>
             ///  是否启用 0－否 1－启用
             ///   </summary>
             public   uint  dwEnable;
             ///   <summary>
             ///  轮循解码通道信息
             ///   </summary>
             public  NET_DVR_MATRIX_DECINFO struDecChanInfo;
        }
         ///   <summary>
         ///  压缩参数?
         ///      NET_DVR_COMPRESSIONCFG_NEW, *LPNET_DVR_COMPRESSIONCFG_NEW;
         ///   </summary>
         public   struct  NET_DVR_COMPRESSIONCFG_NEW
        {
             public   uint  dwSize;
             ///   <summary>
             ///  定时录像
             ///   </summary>
             public  NET_DVR_COMPRESSION_INFO_EX struLowCompression;
             ///   <summary>
             ///  事件触发录像
             ///   </summary>
             public  NET_DVR_COMPRESSION_INFO_EX struEventCompression;
        }
         ///   <summary>
         ///  抓图模式
         ///   </summary>
         public   enum  CAPTURE_MODE
        {
             ///   <summary>
             ///  BMP模式
             ///   </summary>
            BMP_MODE  =   0 ,         //
             ///   <summary>
             ///  JPEG模式 
             ///   </summary>
            JPEG_MODE  =   1          //
        }
         ///   <summary>
         ///  实时声音模式
         ///   </summary>
         public   enum  REALSOUND_MODE
        {
             ///   <summary>
             ///  独占模式
             ///   </summary>
            MONOPOLIZE_MODE  =   1 ,
             ///   <summary>
             ///  共享模式
             ///   </summary>
            SHARE_MODE  =   2
        }
         ///   <summary>
         ///  录象文件参数(带卡号)
         ///      NET_DVR_FINDDATA_CARD, *LPNET_DVR_FINDDATA_CARD;
         ///   </summary>
         public   struct  NET_DVR_FINDDATA_CARD
        {
             ///   <summary>
             ///  文件名
             ///      char sFileName[100];
             ///   </summary>
             public   string  sFileName;
             ///   <summary>
             ///  文件的开始时间
             ///   </summary>
             public  NET_DVR_TIME struStartTime;
             ///   <summary>
             ///  文件的结束时间
             ///   </summary>
             public  NET_DVR_TIME struStopTime;
             ///   <summary>
             ///  文件的大小
             ///   </summary>
             public   uint  dwFileSize;
             ///   <summary>
             ///  卡号?
             ///      char sCardNum[32];
             ///   </summary>
             public   char  sCardNum;
        }

         ///   <summary>
         ///  设置重新连接间隔
         ///      NET_DVR_API BOOL __stdcall NET_DVR_SetReconnect(DWORD dwInterval = 30000, BOOL bEnableRecon = TRUE);
         ///   </summary>
         ///   <param name="dwInterval"></param>
         ///   <param name="bEnableRecon"></param>
         ///   <returns></returns>
        [DllImport( " HCNetSDK.dll " )]
         public   static   extern   bool  NET_DVR_SetReconnect( uint  dwInterval,  bool  bEnableRecon);
         ///   <summary>
         ///  通过IPSever获取设备动态IP地址[Ex]
         ///      NET_DVR_API BOOL  __stdcall NET_DVR_GetDVRIPByResolveSvr_EX(char *sServerIP, WORD wServerPort, unsigned char *sDVRName, WORD wDVRNameLen, BYTE *sDVRSerialNumber, WORD wDVRSerialLen, char* sGetIP, DWORD *dwPort);
         ///   </summary>
         ///   <param name="sServerIP"></param>
         ///   <param name="wServerPort"></param>
         ///   <param name="sDVRName"></param>
         ///   <param name="wDVRNameLen"></param>
         ///   <param name="sDVRSerialNumber"></param>
         ///   <param name="wDVRSerialLen"></param>
         ///   <param name="sGetIP"></param>
         ///   <param name="dwPort"></param>
         ///   <returns></returns>
        [DllImport( " HCNetSDK.dll " )]
         public   static   extern   bool  NET_DVR_GetDVRIPByResolveSvr_EX( string  sServerIP,  ushort  wServerPort,  string  sDVRName,  ushort  wDVRNameLen,  string  sDVRSerialNumber,  ushort  wDVRSerialLen, StringBuilder sGetIP,  ref   uint  dwPort);
         ///   <summary>
         ///      NET_DVR_API BOOL __stdcall NET_DVR_PTZControlWithSpeed_EX(LONG lRealHandle, DWORD dwPTZCommand, DWORD dwStop, DWORD dwSpeed);
         ///   </summary>
         ///   <param name="lRealHandle"></param>
         ///   <param name="dwPTZCommand"></param>
         ///   <param name="dwStop"></param>
         ///   <param name="dwSpeed"></param>
         ///   <returns></returns>
        [DllImport( " HCNetSDK.dll " )]
         public   static   extern   bool  NET_DVR_PTZControlWithSpeed_EX( int  lRealHandle,  uint  dwPTZCommand,  uint  dwStop,  uint  dwSpeed);
         ///   <summary>
         ///      NET_DVR_API BOOL __stdcall NET_DVR_PTZMltTrack(LONG lRealHandle,DWORD dwPTZTrackCmd, DWORD dwTrackIndex);
         ///   </summary>
         ///   <param name="lRealHandle"></param>
         ///   <param name="dwPTZTrackCmd"></param>
         ///   <param name="dwTrackIndex"></param>
         ///   <returns></returns>
        [DllImport( " HCNetSDK.dll " )]
         public   static   extern   bool  NET_DVR_PTZMltTrack( int  lRealHandle,  uint  dwPTZTrackCmd,  uint  dwTrackIndex);
         ///   <summary>
         ///      NET_DVR_API BOOL __stdcall NET_DVR_PTZMltTrack_Other(LONG lUserID,LONG lChannel,DWORD dwPTZTrackCmd, DWORD dwTrackIndex);
         ///   </summary>
         ///   <param name="lUserID"></param>
         ///   <param name="lChannel"></param>
         ///   <param name="dwPTZTrackCmd"></param>
         ///   <param name="dwTrackIndex"></param>
         ///   <returns></returns>
        [DllImport( " HCNetSDK.dll " )]
         public   static   extern   bool  NET_DVR_PTZMltTrack_Other( int  lUserID,  int  lChannel,  uint  dwPTZTrackCmd,  uint  dwTrackIndex);
         ///   <summary>
         ///      NET_DVR_API BOOL __stdcall NET_DVR_PTZMltTrack_EX(LONG lRealHandle,DWORD dwPTZTrackCmd, DWORD dwTrackIndex);
         ///   </summary>
         ///   <param name="lRealHandle"></param>
         ///   <param name="dwPTZTrackCmd"></param>
         ///   <param name="dwTrackIndex"></param>
         ///   <returns></returns>
        [DllImport( " HCNetSDK.dll " )]
         public   static   extern   bool  NET_DVR_PTZMltTrack_EX( int  lRealHandle,  uint  dwPTZTrackCmd,  uint  dwTrackIndex);
         ///   <summary>
         ///  NET_DVR_API LONG __stdcall NET_DVR_FindNextFile_Card(LONG lFindHandle, LPNET_DVR_FINDDATA_CARD lpFindData);
         ///   </summary>
         ///   <param name="lFindHandle"></param>
         ///   <param name="lpFindData"></param>
         ///   <returns></returns>
        [DllImport( " HCNetSDK.dll " )]
         public   static   extern   int  NET_DVR_FindNextFile_Card( int  lFindHandle, NET_DVR_FINDDATA_CARD lpFindData);
         ///   <summary>
         ///  NET_DVR_API LONG __stdcall NET_DVR_FindFile_Card(LONG lUserID, LONG lChannel, DWORD dwFileType, LPNET_DVR_TIME lpStartTime, LPNET_DVR_TIME lpStopTime);
         ///   </summary>
         ///   <param name="lUserID"></param>
         ///   <param name="lChannel"></param>
         ///   <param name="dwFileType"></param>
         ///   <param name="lpStartTime"></param>
         ///   <param name="lpStopTime"></param>
         ///   <returns></returns>
        [DllImport( " HCNetSDK.dll " )]
         public   static   extern   int  NET_DVR_FindFile_Card( int  lUserID,  int  lChannel,  uint  dwFileType, NET_DVR_TIME lpStartTime, NET_DVR_TIME lpStopTime);
         ///   <summary>
         ///  NET_DVR_API int    __stdcall NET_DVR_GetPlayBackPos(LONG lPlayHandle);
         ///   </summary>
         ///   <param name="lPlayHandle"></param>
         ///   <returns></returns>
        [DllImport( " HCNetSDK.dll " )]
         public   static   extern   int  NET_DVR_GetPlayBackPos( int  lPlayHandle);
         // 解码设备DS-6001D/DS-6001F
         ///   <summary>
         ///  NET_DVR_API BOOL __stdcall NET_DVR_StartDecode(LONG lUserID, LONG lChannel, LPNET_DVR_DECODERINFO lpDecoderinfo);
         ///   </summary>
         ///   <param name="lUserID"></param>
         ///   <param name="lChannel"></param>
         ///   <param name="lpDecoderinfo"></param>
         ///   <returns></returns>
        [DllImport( " HCNetSDK.dll " )]
         public   static   extern   bool  NET_DVR_StartDecode( int  lUserID,  int  lChannel, NET_DVR_DECODERINFO lpDecoderinfo);
         ///   <summary>
         ///  NET_DVR_API BOOL __stdcall NET_DVR_StopDecode(LONG lUserID, LONG lChannel);
         ///   </summary>
         ///   <param name="lUserID"></param>
         ///   <param name="lChannel"></param>
         ///   <returns></returns>
        [DllImport( " HCNetSDK.dll " )]
         public   static   extern   bool  NET_DVR_StopDecode( int  lUserID,  int  lChannel);
         ///   <summary>
         ///  NET_DVR_API BOOL __stdcall NET_DVR_GetDecoderState(LONG lUserID, LONG lChannel, LPNET_DVR_DECODERSTATE lpDecoderState);
         ///   </summary>
         ///   <param name="lUserID"></param>
         ///   <param name="lChannel"></param>
         ///   <param name="lpDecoderState"></param>
         ///   <returns></returns>
        [DllImport( " HCNetSDK.dll " )]
         public   static   extern   bool  NET_DVR_GetDecoderState( int  lUserID,  int  lChannel, NET_DVR_DECODERSTATE lpDecoderState);
         ///   <summary>
         ///  保存参数
         ///      NET_DVR_API BOOL __stdcall NET_DVR_SaveConfig(LONG lUserID);
         ///   </summary>
         ///   <param name="lUserID"></param>
         ///   <returns></returns>
        [DllImport( " HCNetSDK.dll " )]
         public   static   extern   bool  NET_DVR_SaveConfig( int  lUserID);
         ///   <summary>
         ///      NET_DVR_API BOOL __stdcall NET_DVR_SetVideoEffect(LONG lUserID, LONG lChannel, DWORD dwBrightValue, DWORD dwContrastValue, DWORD dwSaturationValue, DWORD dwHueValue);
         ///   </summary>
         ///   <param name="lUserID"></param>
         ///   <param name="lChannel"></param>
         ///   <param name="dwBrightValue"></param>
         ///   <param name="dwContrastValue"></param>
         ///   <param name="dwSaturationValue"></param>
         ///   <param name="dwHueValue"></param>
         ///   <returns></returns>
        [DllImport( " HCNetSDK.dll " )]
         public   static   extern   bool  NET_DVR_SetVideoEffect( int  lUserID,  int  lChannel,  uint  dwBrightValue,  uint  dwContrastValue,  uint  dwSaturationValue,  uint  dwHueValue);
         ///   <summary>
         ///      NET_DVR_API BOOL __stdcall NET_DVR_GetVideoEffect(LONG lUserID, LONG lChannel, DWORD *pBrightValue, DWORD *pContrastValue, DWORD *pSaturationValue, DWORD *pHueValue);
         ///   </summary>
         ///   <param name="lUserID"></param>
         ///   <param name="lChannel"></param>
         ///   <param name="pBrightValue"></param>
         ///   <param name="pContrastValue"></param>
         ///   <param name="pSaturationValue"></param>
         ///   <param name="pHueValue"></param>
         ///   <returns></returns>
        [DllImport( " HCNetSDK.dll " )]
         public   static   extern   bool  NET_DVR_GetVideoEffect( int  lUserID,  int  lChannel,  out   uint  pBrightValue,  out   uint  pContrastValue,  out   uint  pSaturationValue,  out   uint  pHueValue);

　　三、下章预告
　　　　实现最基本的连接服务器并预览图像的功能。


结束语
　　首先我必须强调本章的翻译是一个体力活！本章可能会再随后的文章不断的更新，主要是数据类型对应可能有问题，这里也是凭经验来进行对应了，也欢迎有朋友尽早的向我提交勘误，我好及时的更新文章。