在MT4上使用双线MACD指标源码

#property copyright "Copyright 2021,EATrader."

#property link "https://www.mql5.com/"

#property description "关注公众号：从零开始学EA交易"

                       "\n微信号：XQH20200705"

#property icon "\\Images\\001.ico"

#property version "1.00"

#property strict

#property indicator_separate_window

#property indicator_buffers 4

#property indicator_plots 4

//--- plot DIF

#property indicator_label1 "DIF"

#property indicator_type1 DRAW_LINE

#property indicator_color1 clrSilver

#property indicator_style1 STYLE_SOLID

#property indicator_width1 1

//--- plot DEA

#property indicator_label2 "DEA"

#property indicator_type2 DRAW_LINE

#property indicator_color2 clrYellow

#property indicator_style2 STYLE_SOLID

#property indicator_width2 1

//--- plot macd hist+

#property indicator_label3 "Macd+"

#property indicator_type3 DRAW_HISTOGRAM

#property indicator_color3 clrRed

#property indicator_style3 STYLE_SOLID

#property indicator_width3 1

//--- plot macd hist-

#property indicator_label4 "Macd-"

#property indicator_type4 DRAW_HISTOGRAM

#property indicator_color4 clrAqua

#property indicator_style4 STYLE_SOLID

#property indicator_width4 1





input int FastEMA = 12;

input int SlowEMA = 26;

input int MACDEMA = 9;





//--- indicator buffers

double         DIFBuffer[];

double         DEABuffer[];

double         MacdHistBuffer[];

double         MacdHistBuffer1[];

double w=0;

double w1=0;

//+------------------------------------------------------------------+

//| Custom indicator initialization function |

//+------------------------------------------------------------------+

int OnInit()

  { 
   

//--- indicator buffers mapping

   SetIndexBuffer(0,DIFBuffer);

   SetIndexBuffer(1,DEABuffer);

   SetIndexBuffer(2,MacdHistBuffer);

   SetIndexBuffer(3,MacdHistBuffer1);



   SetIndexEmptyValue(2,EMPTY_VALUE);

   SetIndexEmptyValue(3,EMPTY_VALUE);



   for(int i=0; i<4; i++)

      SetIndexDrawBegin(i,SlowEMA+MACDEMA);



   IndicatorDigits(Digits);



   IndicatorShortName("MACD("+(string)FastEMA+","+(string)SlowEMA+","+(string)MACDEMA+")");



   if(FastEMA<0 || SlowEMA<0 || MACDEMA<0)

      return(INIT_FAILED);



   w = 2.0/(MACDEMA + 1);

   w1= 1.0-w;



//---

   return(INIT_SUCCEEDED);

  }

//+------------------------------------------------------------------+

//| Custom indicator iteration function |

//+------------------------------------------------------------------+

int OnCalculate(const int rates_total,

                const int prev_calculated,

                const datetime &time[],

                const double &open[],

                const double &high[],

                const double &low[],

                const double &close[],

                const long &tick_volume[],

                const long &volume[],

                const int &spread[])

  { 
   

//---

   int i,limit=0;

   if(rates_total<=0) return(0);

   if(prev_calculated<=0) limit=rates_total-1;

   else limit=rates_total-prev_calculated+1;

   double hst=0.0;

   for(i=limit; i>=0; i--)

     { 
   

      if(i==rates_total-1) continue;

      DIFBuffer[i]=iMA(NULL,0,FastEMA,0,MODE_EMA,PRICE_CLOSE,i)-iMA(NULL,0,SlowEMA,0,MODE_EMA,PRICE_CLOSE,i);

      DEABuffer[i]=w*DIFBuffer[i]+w1*DEABuffer[i+1];

      hst = 2.0*(DIFBuffer[i]-DEABuffer[i]);

      if(hst>=0)

        { 
   

         MacdHistBuffer[i]=hst;

         MacdHistBuffer1[i]=EMPTY_VALUE;

        }

      else

        { 
   

         MacdHistBuffer1[i]=hst;

         MacdHistBuffer[i]=EMPTY_VALUE;

        }



     }



//--- return value of prev_calculated for next call

   return(rates_total);

  }

//+------------------------------------------------------------------+