public int InsertConvHistory(string _leaderAccount, string _leaderName, int _duration, StringBuilder _historyID)//插入会议历史记录
 {
     try
     {
         LogManager.SystemLog.Debug(string.Format("Start UC_SDK_InsertConvHistory"));
         int iRet = UCInterface.UC_SDK_InsertConvHistory(_leaderAccount, _leaderName, _duration, _historyID);
         if (iRet != 0)
         {
             LogManager.SystemLog.Error(string.Format("Start UC_SDK_InsertConvHistory error {0}", iRet));
             return(iRet);
         }
         LogManager.SystemLog.Debug(string.Format("End UC_SDK_InsertConvHistory"));
         return(iRet);
     }
     catch (System.Exception ex)
     {
         LogManager.SystemLog.Error(ex.ToString());
         return(-1);
     }
 }