MA1st

//+------------------------------------------------------------------+
//|                                                        MA1st.mq5 |
//|                                 Copyright 2020, Beleif Co., Ltd. |
//|                                           https://belief-hf.com/ |
//+------------------------------------------------------------------+
#property copyright "Copyright 2020, Beleif Co., Ltd."
#property link      "https://belief-hf.com/"
#property version   "1.00"
#property indicator_chart_window

#property indicator_buffers 1
#property indicator_plots 1
#property indicator_type1 DRAW_LINE
#property indicator_color1 clrDeepPink
#property indicator_width1 2
#property indicator_style1 STYLE_DOT

input ENUM_MA_METHOD InpMAMethod=MODE_SMA;//移動平均線の種類
input ENUM_APPLIED_PRICE InpMAApply=PRICE_CLOSE;//適用価格
input int InpMaPeriod=20;//期間

double MABuffer[];
int hMA;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit()
  {

   if(InpMaPeriod<1)
     {
      Print("Error Invalid InpMaPeriod value");
      return(INIT_FAILED);
     }
//--- indicator buffers mapping

   SetIndexBuffer(0,MABuffer,INDICATOR_DATA);

   IndicatorSetString(INDICATOR_SHORTNAME,"はじめての移動平均");
   PlotIndexSetString(0,PLOT_LABEL,"MA1st("+string(InpMaPeriod)+")");

   hMA=iMA(NULL,0,InpMaPeriod,0,InpMAMethod,InpMAApply);
   if(hMA==INVALID_HANDLE)
     {
      Print("Error INVALID_HANDLE");
      return(INIT_FAILED);
     }

//---
   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[])
  {
//---

   if(BarsCalculated(hMA)<rates_total)
      return(0);

   int to_copy;
   to_copy=rates_total-prev_calculated;
   if(to_copy==0)
      to_copy++;

   if(CopyBuffer(hMA,0,0,to_copy,MABuffer)<=0)
      return(0);
//   Print(rates_total,",",prev_calculated);

//--- return value of prev_calculated for next call
   return(rates_total);
  }
//+------------------------------------------------------------------+
//|ハンドルの開放                                                         |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
  {
   IndicatorRelease(hMA);
  }
//+------------------------------------------------------------------+