75 lines
2.8 KiB
MQL5
75 lines
2.8 KiB
MQL5
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//| IndBarIndex.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 "2021, MetaQuotes Ltd."
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#property link "https://www.mql5.com"
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#property description "WARNINIG: this indicator is intentionally made with a malfunction!\n"
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#property description "When run with SimulateCalculation=true it'll stop redraw"
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" of existing and new indicators on the same symbol! "
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"Do not forget to remove it from a chart, after examination of the problem!\n"
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#property description "Normally, the indicator displays bar indices."
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#property indicator_separate_window
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#property indicator_buffers 1
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#property indicator_plots 1
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#property indicator_type1 DRAW_LINE
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#property indicator_color1 DodgerBlue
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// setting this input to true will freeze all indicators drawing on
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// all charts of the same symbol, until you remove the indicator
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input bool SimulateCalculation = false;
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double Buffer[];
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//+------------------------------------------------------------------+
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//| Custom indicator initialization function |
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//+------------------------------------------------------------------+
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void OnInit()
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{
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SetIndexBuffer(0, Buffer, INDICATOR_DATA);
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IndicatorSetInteger(INDICATOR_DIGITS, 0);
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if(SimulateCalculation)
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{
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EventSetTimer(1);
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}
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}
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//+------------------------------------------------------------------+
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//| Timer handler |
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//+------------------------------------------------------------------+
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void OnTimer()
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{
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Comment("Calculation started at ", TimeLocal());
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// the endless loop emulates lengthy calculations
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while(!IsStopped())
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{
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}
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Comment("");
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}
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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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if(prev_calculated <= 0)
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{
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ArrayInitialize(Buffer, EMPTY_VALUE);
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}
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const int N = MathMin(rates_total, TerminalInfoInteger(TERMINAL_MAXBARS));
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for(int i = MathMax(prev_calculated - 1, 0); i < N && !IsStopped(); i++)
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{
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Buffer[i] = i;
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}
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return rates_total;
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}
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//+------------------------------------------------------------------+
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