2017/5/6
MT5入门到精通之十六（系统自带跟单操作）
一 跟单signal （mt5软件要一直打开）
1.订阅与取消订阅

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2.充值

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3.代码实现查询和订阅
3.1前提条件，需要允许才可以订阅成功

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3.2信号查询，订阅和取消代码实现

//+------------------------------------------------------------------+
//|                                          operateSignalScript.mq5 |
//|                        Copyright 2017, MetaQuotes Software Corp. |
//|                                             https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2017, MetaQuotes Software Corp."
#property link      "https://www.mql5.com"
#property version   "1.00"
#property script_show_inputs
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void OnStart()
  {
//1.遍历信号
   int total=SignalBaseTotal();
   for(int i=0;i<total;i++)
     {
      if(SignalBaseSelect(i)==true)
        {
         //2.1 信号名称
         string name=SignalBaseGetString(SIGNAL_BASE_NAME);
         //2.2Return on Investment (%)
         double roi=SignalBaseGetDouble(SIGNAL_BASE_ROI);
         //2.3 Number of subscribers
         int subscribers_num=SignalBaseGetInteger(SIGNAL_BASE_SUBSCRIBERS);
         //2.4 Account maximum drawdown
         double max_drawdown=SignalBaseGetDouble(SIGNAL_BASE_MAX_DRAWDOWN);
         //2.5 Signal subscription price
         double subscription_price=SignalBaseGetDouble(SIGNAL_BASE_PRICE);
         //2.6 Signal ID
         int signal_id=SignalBaseGetInteger(SIGNAL_BASE_ID);
         //3.订阅指定条件的信号
         if(roi>80 && subscribers_num>20 && subscription_price==0)
           {
            //3.1信号一些个性化参数设置
            //Agree to terms of use of Signals service
            SignalInfoSetInteger(SIGNAL_INFO_TERMS_AGREE,1);
            //Copy trades by subscription
            SignalInfoSetInteger(SIGNAL_INFO_SUBSCRIPTION_ENABLED,1);
            //Copy Stop Loss and Take Profit flag
            SignalInfoSetInteger(SIGNAL_INFO_COPY_SLTP,1);
            //The flag enables synchronization without confirmation dialog
            SignalInfoSetInteger(SIGNAL_INFO_CONFIRMATIONS_DISABLED,1);
            //Deposit percent 
            SignalInfoSetInteger(SIGNAL_INFO_DEPOSIT_PERCENT,70);
            //Equity limit
            SignalInfoSetDouble(SIGNAL_INFO_EQUITY_LIMIT,1000);
            //Slippage 
            SignalInfoSetDouble(SIGNAL_INFO_SLIPPAGE,3.5);
            //3.2订阅信号
            if(SignalSubscribe(signal_id)==false)
              {
               printf(GetLastError());
              }
           }
         int a=0;
        }
     }

  }
//+------------------------------------------------------------------+

3.3订阅成功后如下显示

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