ColorParabolic_Alert - MetaTrader 5脚本

ColorParabolic 信号灯信号指标，有提醒，发送电子邮件和推送通知的功能。

指标代码已经做了以下改变以实现提醒，电子邮件信息和推送通知:

1. 引入了新的输入参数

   input uint NumberofBar=1;//信号柱的编号
   input bool SoundON=true; //启用提醒
   input uint NumberofAlerts=2;//提醒数量
   input bool EMailON=false; //启用信号发送邮件
   input bool PushON=false; //启用发送信号至移动设备
   
   

2. 在指标代码的末尾加入了新的函数: BuySignal(), SellSignal() 和 GetStringTimeframe()

   //+------------------------------------------------------------------+
   //| 买入信号函数                                                       |
   //+------------------------------------------------------------------+
   void BuySignal(string SignalSirname,      // 用于电子邮件和推送消息的指标名称文字
                  double &BuyArrow[],        // 买入信号的指标缓冲区
                  const int Rates_total,     // 当前的柱数
                  const int Prev_calculated, // 前一分时的柱数
                  const double &Close[],     // 收盘价
                  const int &Spread[])       // 点差
     {
   //---
      static uint counter=0;
      if(Rates_total!=Prev_calculated) counter=0;
   
      bool BuySignal=false;
      bool SeriesTest=ArrayGetAsSeries(BuyArrow);
      int index;
      if(SeriesTest) index=int(NumberofBar);
      else index=Rates_total-int(NumberofBar)-1;
      if(NormalizeDouble(BuyArrow[index],_Digits) && BuyArrow[index]!=EMPTY_VALUE) BuySignal=true;
      if(BuySignal && counter<=NumberofAlerts)
        {
         counter++;
         MqlDateTime tm;
         TimeToStruct(TimeCurrent(),tm);
         string text=TimeToString(TimeCurrent(),TIME_DATE)+" "+string(tm.hour)+":"+string(tm.min);
         SeriesTest=ArrayGetAsSeries(Close);
         if(SeriesTest) index=int(NumberofBar);
         else index=Rates_total-int(NumberofBar)-1;
         double Ask=Close[index];
         double Bid=Close[index];
         SeriesTest=ArrayGetAsSeries(Spread);
         if(SeriesTest) index=int(NumberofBar);
         else index=Rates_total-int(NumberofBar)-1;
         Bid+=Spread[index]*_Point;
         string sAsk=DoubleToString(Ask,_Digits);
         string sBid=DoubleToString(Bid,_Digits);
         string sPeriod=GetStringTimeframe(ChartPeriod());
         if(SoundON) Alert("买入信号 \n Ask=",Ask,"\n Bid=",Bid,"\n currtime=",text,"\n Symbol=",Symbol()," Period=",sPeriod);
         if(EMailON) SendMail(SignalSirname+": 买入信号提醒","BUY signal at Ask="+sAsk+", Bid="+sBid+", Date="+text+" Symbol="+Symbol()+" Period="+sPeriod);
         if(PushON) SendNotification(SignalSirname+": BUY signal at Ask="+sAsk+", Bid="+sBid+", Date="+text+" Symbol="+Symbol()+" Period="+sPeriod);
        }
   
   //---
     }
   //+------------------------------------------------------------------+
   //| 卖出信号函数                                                       |
   //+------------------------------------------------------------------+
   void SellSignal(string SignalSirname,      // 用于电子邮件和推送消息的指标名称文字
                   double &SellArrow[],       // 卖出信号的指标缓冲区
                   const int Rates_total,     // 当前的柱数
                   const int Prev_calculated, // 前一分时的柱数
                   const double &Close[],     // 收盘价
                   const int &Spread[])       // 点差
     {
   //---
      static uint counter=0;
      if(Rates_total!=Prev_calculated) counter=0;
   
      bool SellSignal=false;
      bool SeriesTest=ArrayGetAsSeries(SellArrow);
      int index;
      if(SeriesTest) index=int(NumberofBar);
      else index=Rates_total-int(NumberofBar)-1;
      if(NormalizeDouble(SellArrow[index],_Digits) && SellArrow[index]!=EMPTY_VALUE) SellSignal=true;
      if(SellSignal && counter<=NumberofAlerts)
        {
         counter++;
         MqlDateTime tm;
         TimeToStruct(TimeCurrent(),tm);
         string text=TimeToString(TimeCurrent(),TIME_DATE)+" "+string(tm.hour)+":"+string(tm.min);
         SeriesTest=ArrayGetAsSeries(Close);
         if(SeriesTest) index=int(NumberofBar);
         else index=Rates_total-int(NumberofBar)-1;
         double Ask=Close[index];
         double Bid=Close[index];
         SeriesTest=ArrayGetAsSeries(Spread);
         if(SeriesTest) index=int(NumberofBar);
         else index=Rates_total-int(NumberofBar)-1;
         Bid+=Spread[index]*_Point;
         string sAsk=DoubleToString(Ask,_Digits);
         string sBid=DoubleToString(Bid,_Digits);
         string sPeriod=GetStringTimeframe(ChartPeriod());
         if(SoundON) Alert("卖出信号 \n Ask=",Ask,"\n Bid=",Bid,"\n currtime=",text,"\n Symbol=",Symbol()," Period=",sPeriod);
         if(EMailON) SendMail(SignalSirname+": 卖出信号提醒","SELL signal at Ask="+sAsk+", Bid="+sBid+", Date="+text+" Symbol="+Symbol()+" Period="+sPeriod);
         if(PushON) SendNotification(SignalSirname+": SELL signal at Ask="+sAsk+", Bid="+sBid+", Date="+text+" Symbol="+Symbol()+" Period="+sPeriod);
        }
   //---
     }
   //+------------------------------------------------------------------+
   //|  把时段转换为字符串                                                 |
   //+------------------------------------------------------------------+
   string GetStringTimeframe(ENUM_TIMEFRAMES timeframe)
     {
   //----
      return(StringSubstr(EnumToString(timeframe),7,-1));
   //----
     }
   
   

3. 在 OnCalculate() 代码块中，在指标计算循环之后加入了一些对 BuySignal() 和 SellSignal() 函数的调用。

   //---     
      BuySignal("ColorParabolic_Alert",BuyBuffer,rates_total,prev_calculated,close,spread);
      SellSignal("ColorParabolic_Alert",SellBuffer,rates_total,prev_calculated,close,spread);
   //---     
   
   

其中 BuyBuffer 和 SellBuffer 是指标缓冲区的名称，用于保存买入和卖出信号。在指标缓冲区中的空值必须要设为0或者 EMPTY_VALUE。

假定在指标代码中的 OnCalculate() 模块，只会调用 BuySignal() 和 SellSignal() 函数一次。

图1. 图表上的 ColorParabolic_Alert

图2. ColorParabolic_Alert 指标. 生成提醒。