forked from rosh/MQL5Book
74 lines
2.9 KiB
MQL5
74 lines
2.9 KiB
MQL5
//+------------------------------------------------------------------+
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//| ObjectHighLowChannel.mq5 |
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//| Copyright 2021, MetaQuotes Ltd. |
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//| https://www.mql5.com |
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//+------------------------------------------------------------------+
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#property copyright "Copyright 2021, MetaQuotes Ltd."
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#property link "https://www.mql5.com"
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#property version "1.0"
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#property description "Create 2 trend lines on highs and lows of specified bar range."
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#property indicator_chart_window
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#property indicator_buffers 0
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#property indicator_plots 0
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input int BarOffset = 0;
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input int BarCount = 10;
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const string Prefix = "HighLowChannel-";
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//+------------------------------------------------------------------+
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//| Custom indicator iteration function |
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//+------------------------------------------------------------------+
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int OnCalculate(const int rates_total,
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const int prev_calculated,
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const int begin,
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const double &price[])
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{
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static datetime now = 0;
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if(now != iTime(NULL, 0, 0))
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{
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const int hh = iHighest(NULL, 0, MODE_HIGH, BarCount, BarOffset);
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const int lh = iLowest(NULL, 0, MODE_HIGH, BarCount, BarOffset);
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const int ll = iLowest(NULL, 0, MODE_LOW, BarCount, BarOffset);
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const int hl = iHighest(NULL, 0, MODE_LOW, BarCount, BarOffset);
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datetime t[2] = {iTime(NULL, 0, BarOffset + BarCount), iTime(NULL, 0, BarOffset)};
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double ph[2] = {iHigh(NULL, 0, fmax(hh, lh)), iHigh(NULL, 0, fmin(hh, lh))};
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double pl[2] = {iLow(NULL, 0, fmax(ll, hl)), iLow(NULL, 0, fmin(ll, hl))};
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DrawFigure(Prefix + "Highs", t, ph, clrBlue);
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DrawFigure(Prefix + "Lows", t, pl, clrRed);
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now = iTime(NULL, 0, 0);
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}
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return rates_total;
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}
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//+------------------------------------------------------------------+
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//| Helper function for object creation and setup |
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//+------------------------------------------------------------------+
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bool DrawFigure(const string name, const datetime &t[], const double &p[], const color clr)
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{
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if(ArraySize(t) != ArraySize(p)) return false;
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ObjectCreate(0, name, OBJ_TREND, 0, 0, 0);
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for(int i = 0; i < ArraySize(t); ++i)
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{
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ObjectSetInteger(0, name, OBJPROP_TIME, i, t[i]);
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ObjectSetDouble(0, name, OBJPROP_PRICE, i, p[i]);
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}
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ObjectSetInteger(0, name, OBJPROP_COLOR, clr);
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return true;
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}
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//+------------------------------------------------------------------+
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//| Finalization handler |
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//+------------------------------------------------------------------+
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void OnDeinit(const int)
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{
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ObjectsDeleteAll(0, Prefix);
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}
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//+------------------------------------------------------------------+
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