int SetRecordVideoSavedDays(int newSavedDays)

   {

       HKEY hSubKey = NULL;

       LONG lRet    = ;

       DWORD dwType = ;

       int iRet     = ;

       do

       {

          if (newSavedDays < )

          {

              printf("error: input negative number\n");

              break;

          }

          lRet = RegCreateKeyEx(HKEY_LOCAL_MACHINE, "SOFTWARE\\Cloudsoar 3C\\ServerInfo",

                                  , NULL, REG_OPTION_NON_VOLATILE,

                                  KEY_ALL_ACCESS, NULL, &hSubKey, NULL);

          if (ERROR_SUCCESS != lRet)

          {

              printf("Create Reg failed\n");

              break;

          }

          lRet = RegSetValueEx(hSubKey, "VideoSavedDays", , REG_DWORD, (BYTE*)&newSavedDays, sizeof(newSavedDays));

          if (ERROR_SUCCESS != lRet)

          {

              printf("Set reg value VideoSavedDays failed\n");

              break;

          }

          iRet = (int)newSavedDays;

      } while ();

      if(NULL != hSubKey)

      {

          RegCloseKey(hSubKey);

          hSubKey = NULL;

      }

      return iRet;

  }

  // parameter1: out, save video saved path

  // parameter2: in, save path length

  BOOL GetRecordVideoSavedPath(char *pchPath,int pathBufLen)

  {

      HKEY hSubKey    = NULL;

      LONG lRet       = ;

      DWORD dwType    = ;

      DWORD dwPathLen = pathBufLen;

      BOOL bRet       = FALSE;

      do

      {

          lRet = RegOpenKeyEx(HKEY_LOCAL_MACHINE,

                              "SOFTWARE\\Cloudsoar 3C\\ServerInfo",

                              , KEY_READ, &hSubKey);

          if (ERROR_SUCCESS != lRet)

          {

              printf("Open reg value VideoSavedPath failed\n");

              break;

          }

          lRet = RegQueryValueEx(hSubKey, "VideoSavedPath",

                                  , &dwType, (LPBYTE)pchPath, &dwPathLen);

          if (ERROR_SUCCESS != lRet)

          {

              printf("Query reg value VideoSavedPath failed\n");

              break;

          }

          bRet = TRUE;

      } while ();

      RegCloseKey(hSubKey);

      return bRet;

  }

  BOOL SetRecordVideoSavePath(char *pchNewPath)

  {

      HKEY hSubKey  = NULL;

      LONG lRet     = ;

      DWORD dwType  = ;

      DWORD dwState = ;

      BOOL bRet     = FALSE;

      do

      {

          if (NULL == pchNewPath)

          {

              printf("error: input negative new path\n");

              break;

          }

          lRet = RegCreateKeyEx(HKEY_LOCAL_MACHINE, "SOFTWARE\\Cloudsoar 3C\\ServerInfo",

              , NULL, REG_OPTION_NON_VOLATILE,

              KEY_ALL_ACCESS, NULL, &hSubKey, &dwState);

         if (ERROR_SUCCESS != lRet)

         {

             printf("Create Reg VideoSavedPath failed\n");

             break;

         }

         lRet = RegSetValueEx(hSubKey, "VideoSavedPath", , REG_SZ, (PBYTE)pchNewPath, sizeof(pchNewPath));

         if (ERROR_SUCCESS != lRet)

         {

             printf("Set reg value VideoSavedPath failed\n");

             break;

         }

         bRet = TRUE;

     } while ();

     RegCloseKey(hSubKey);

     return bRet;

 }

  LONG RegCreateKeyEx(

  HKEY hKey, // handle to open key

  LPCTSTR lpSubKey, // subkey name

  DWORD Reserved, // reserved

  LPTSTR lpClass, // class string

  DWORD dwOptions, // special options

  REGSAM samDesired, // desired security access

  LPSECURITY_ATTRIBUTES lpSecurityAttributes, // inheritance

  PHKEY phkResult, // key handle

 LPDWORD lpdwDisposition // disposition value buffer

 );

 hKey: 　　要打开键的句柄或以下预定义句柄

  HKEY_CLASSES_ROOT

  HKEY_CURRENT_USER

  HKEY_LOCAL_MACHINE

  HKEY_USERS

  lpSubKey: 　　指向一个用于定义子键路径的字符串

  Reserved,dwOptions,samDesired: 　　置0

  lpClass,lpSecurityAttributes: 　　置NULL

  phkResult: 　　用于接收键句柄

 lpdwDisposition: 　　接收的相关信息,取值如下

 REG_CREATED_NEW_KEY 　　创建成功

 REG_OPENED_EXISTING_KEY 　　 键已存在

 LONG RegOpenKeyEx(

     HKEY hKey, // handle to open key

     LPCTSTR lpSubKey, // subkey name

     DWORD ulOptions, // reserved

     REGSAM samDesired, // security access mask

     PHKEY phkResult // handle to open key

 );

 hKey: 　 　　要打开键的句柄或以下预定义句柄

 HKEY_CLASSES_ROOT

 HKEY_CURRENT_USER

 HKEY_LOCAL_MACHINE

 HKEY_USERS

 lpSubKey: 　　指向一个用于定义子键路径的字符串

 ulOptions: 　　保留位,置0

 samDesired: 　　打开键后键的操作权限

 phResult: 　　接收打开的键的句柄

 LONG RegSetValueEx(

     HKEY hKey, // handle to key

     LPCTSTR lpValueName, // value name

     DWORD Reserved, // reserved

     DWORD dwType, // value type

     CONST BYTE *lpData, // value data

     DWORD cbData // size of value data

 );

 hKey: 　　打开键的句柄或以下预定义句柄

  HKEY_CLASSES_ROOT

  HKEY_CURRENT_USER

  HKEY_LOCAL_MACHINE

  HKEY_USERS

  lpValueName: 　　键值的名称

  Reserved: 　　保留位,置0

  dwType: 　　键值的类型

  lpData: 　　键值

 cbData: 　　键值数据长度