//+------------------------------------------------------------------+
//|                                                        Hi-LO.mq5 |
//|                        Copyright 2018, MetaQuotes Software Corp. |
//|                                             https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2018, MetaQuotes Software Corp."
#property link      "https://www.mql5.com"
#property version   "1.00"
#property indicator_chart_window
#property indicator_buffers 3
#property indicator_plots   3
//--- plot Media
#property indicator_label1  "Media"
#property indicator_type1   DRAW_LINE
#property indicator_color1  clrOrange
#property indicator_style1  STYLE_SOLID
#property indicator_width1  2
//--- plot Venda
#property indicator_label2  "Venda"
#property indicator_type2   DRAW_ARROW
#property indicator_color2  clrRed
#property indicator_style2  STYLE_SOLID
#property indicator_width2  1
//--- plot Compra
#property indicator_label3  "Compra"
#property indicator_type3   DRAW_ARROW
#property indicator_color3  clrBlue
#property indicator_style3  STYLE_SOLID
#property indicator_width3  1

//--- input parameters
input int      Periodos=34;
//--- indicator buffers
double         MediaBuffer[];
double         VendaBuffer[];
double         CompraBuffer[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit()
  {
//--- indicator buffers mapping
   SetIndexBuffer(0,MediaBuffer,INDICATOR_DATA);
   SetIndexBuffer(1,VendaBuffer,INDICATOR_DATA);
   SetIndexBuffer(2,CompraBuffer,INDICATOR_DATA);

   PlotIndexSetInteger(1,PLOT_ARROW,234);
   PlotIndexSetInteger(2,PLOT_ARROW,233);

   PlotIndexSetInteger(1,PLOT_ARROW_SHIFT,0);
   PlotIndexSetInteger(2,PLOT_ARROW_SHIFT,0);

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


CopyBuffer(iMA(_Symbol,_Period,Periodos,0,MODE_EMA,PRICE_CLOSE),0,0,rates_total,MediaBuffer);

for(int i=Periodos; i<rates_total;i++)
{
      if(open[i]>MediaBuffer[i] && close[i]>high[i-1])
           {
                   CompraBuffer[i]=high[i-1];
           }

     else if(open[i]<MediaBuffer[i] && close[i]<low[i-1])
           {

                   VendaBuffer[i]=low[i-1];

           }

      else

          {
                VendaBuffer[i]=0;
                CompraBuffer[i]=0;
          }


}

//--- return value of prev_calculated for next call
   return(rates_total);
  }
//+------------------------------------------------------------------+