CopySpread

int  CopySpread(
   string           symbol_name,      // 심볼명
   ENUM_TIMEFRAMES  timeframe,        // 주기
   int              start_pos,        // 포지션 시작
   int              count,            // 복제할 데이터 수
   int              spread_array[]    // 스프레드 값에 대한 대상 배열
   );

int  CopySpread(
   string           symbol_name,      // 심볼명
   ENUM_TIMEFRAMES  timeframe,        // 주기
   datetime         start_time,       // 시작 일시
   int              count,            // 복제할 데이터 수
   int              spread_array[]    // 스프레드 값에 대한 대상 배열
   );

int  CopySpread(
   string           symbol_name,      // 심볼명
   ENUM_TIMEFRAMES  timeframe,        // 주기
   datetime         start_time,       // 시작 일시
   datetime         stop_time,        // 정지 일시
   int              spread_array[]    // 스프레드 값에 대한 대상 배열
   );

#property indicator_separate_window
#property indicator_buffers 1
#property indicator_plots   1
//---- plot Spread
#property indicator_label1  "Spread"
#property indicator_type1   DRAW_HISTOGRAM
#property indicator_color1  clrRed
#property indicator_style1  STYLE_SOLID
#property indicator_width1  1
//--- 입력 매개 변수
input int      bars=3000;
//--- 지표 버퍼
double         SpreadBuffer[];
//+------------------------------------------------------------------+
//| 커스텀 지표 초기화 기능                         |
//+------------------------------------------------------------------+
void OnInit()
  {
//--- 지표 버퍼 연결
   SetIndexBuffer(0,SpreadBuffer,INDICATOR_DATA);
   IndicatorSetInteger(INDICATOR_DIGITS,0);
//---
  }
//+------------------------------------------------------------------+
//| 커스텀 지표 반복 함수                              |
//+------------------------------------------------------------------+
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[])
  {
//---
   if(prev_calculated==0)
     {
      int spread_int[];
      ArraySetAsSeries(spread_int,true);
      int spreads=CopySpread(Symbol(),0,0,bars,spread_int);
      Print("다음과 같은 수의 스프레드 값을 받았습니다: ",spreads);
      for (int i=0;i<spreads;i++) 
      {
      SpreadBuffer[rates_total-1-i]=spread_int[i];
      if(i<=30) Print("spread["+i+"] = ",spread_int[i]);
      }
     }
   else
     {
      double Ask,Bid;
      Ask=SymbolInfoDouble(Symbol(),SYMBOL_ASK);
      Bid=SymbolInfoDouble(Symbol(),SYMBOL_BID);
      Comment("Ask = ",Ask,"  Bid = ",Bid);
      SpreadBuffer[rates_total-1]=(Ask-Bid)/Point();
     }
//--- 다음 호출을 위한 prev_calculated의 반환 값
   return(rates_total);
  }