【MQL】MTF_ADX（マルチタイムフレームADX）

//+------------------------------------------------------------------+
//|                                                      MTF_ADX.mq4 |
//|                                  Copyright 2025, MetaQuotes Ltd. |
//|                                             https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2025, MetaQuotes Ltd."
#property link      "https://www.mql5.com"
#property version   "1.00"
#property strict

#property indicator_separate_window
#property indicator_level1 14
#property indicator_buffers 3
#property indicator_color1 LightSeaGreen
#property indicator_color2 YellowGreen
#property indicator_color3 Wheat

//--- indicator parameters
input ENUM_TIMEFRAMES TimeFrame = PERIOD_CURRENT;   //　時間足
input int InPeriod=20;                              // Adx Period

//--- buffers
double ExtMainBuffer[];
double ExtPlusBuffer[];
double ExtMinusBuffer[];

//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit()
{
    //--- middle line
    SetIndexStyle(0,DRAW_LINE,STYLE_SOLID,2);
    SetIndexBuffer(0,ExtMainBuffer);
    ArraySetAsSeries(ExtMainBuffer, true);

    //--- upper band
    SetIndexStyle(1,DRAW_LINE,STYLE_DOT,1);
    SetIndexBuffer(1,ExtPlusBuffer);
    ArraySetAsSeries(ExtPlusBuffer, true);

    //--- lower band
    SetIndexStyle(2,DRAW_LINE,STYLE_DOT,1);
    SetIndexBuffer(2,ExtMinusBuffer);
    ArraySetAsSeries(ExtMinusBuffer, true);

    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 (_Period > TimeFrame && TimeFrame != PERIOD_CURRENT) return -1;
    int limit = rates_total-prev_calculated-1;
    for (int i=limit; i>=0; i--)
    {
        int bar = iBarShift(NULL, TimeFrame, Time[i]);
        if (bar == -1) continue;
        ExtMainBuffer[i]    = iADX(NULL,TimeFrame,InPeriod,PRICE_HIGH,MODE_MAIN,bar) ; 
        ExtPlusBuffer[i]    = iADX(NULL,TimeFrame,InPeriod,PRICE_HIGH,MODE_PLUSDI,bar) ; 
        ExtMinusBuffer[i]   = iADX(NULL,TimeFrame,InPeriod,PRICE_HIGH,MODE_MINUSDI,bar) ;  
    }

    return(rates_total);
}