MQLでサブウィンドウにオシレーターを表示するインジケーターを作る方法（MT4・MT5）

MQL4（MT4）コードをコピー

#property strict
#property indicator_separate_window
#property indicator_buffers 1
#property indicator_color1 clrDodgerBlue
#property indicator_level1 0.0
// 移動平均乖離率（％）をサブウィンドウに表示するインジケーター（MT4）
input int InpPeriod = 25;   // 移動平均の期間

double DevBuf[];

int OnInit()
{
   SetIndexBuffer(0, DevBuf);
   SetIndexStyle(0, DRAW_LINE);
   IndicatorShortName("乖離率(" + IntegerToString(InpPeriod) + ")");
   IndicatorDigits(2);
   return INIT_SUCCEEDED;
}

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(rates_total <= InpPeriod) return 0;
   ArraySetAsSeries(close, true);
   int limit = rates_total - prev_calculated;
   if(prev_calculated == 0) limit = rates_total - InpPeriod;
   for(int i = limit; i >= 0; i--)
   {
      double ma = iMA(_Symbol, 0, InpPeriod, 0, MODE_SMA, PRICE_CLOSE, i);
      DevBuf[i] = (ma != 0) ? (close[i] - ma) / ma * 100.0 : 0;
   }
   return rates_total;
}

MQL5（MT5）コードをコピー

#property indicator_separate_window
#property indicator_buffers 1
#property indicator_plots   1
#property indicator_type1   DRAW_LINE
#property indicator_color1  clrDodgerBlue
#property indicator_level1  0.0
// 移動平均乖離率（％）をサブウィンドウに表示するインジケーター（MT5）
input int InpPeriod = 25;   // 移動平均の期間

double DevBuf[];
int hMa = INVALID_HANDLE;

int OnInit()
{
   SetIndexBuffer(0, DevBuf, INDICATOR_DATA);
   IndicatorSetString(INDICATOR_SHORTNAME, "乖離率(" + IntegerToString(InpPeriod) + ")");
   IndicatorSetInteger(INDICATOR_DIGITS, 2);
   hMa = iMA(_Symbol, PERIOD_CURRENT, InpPeriod, 0, MODE_SMA, PRICE_CLOSE);
   return hMa == INVALID_HANDLE ? INIT_FAILED : INIT_SUCCEEDED;
}

void OnDeinit(const int reason)
{
   IndicatorRelease(hMa);
}

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(rates_total <= InpPeriod || BarsCalculated(hMa) < rates_total) return 0;
   double ma[];
   if(CopyBuffer(hMa, 0, 0, rates_total, ma) < rates_total) return 0;
   int start = (prev_calculated > 0) ? prev_calculated - 1 : InpPeriod - 1;
   for(int i = start; i < rates_total; i++)
      DevBuf[i] = (ma[i] != 0) ? (close[i] - ma[i]) / ma[i] * 100.0 : 0;
   return rates_total;
}