//****** project (module signals): tf-test-g1_module_signals_ind.mq5
//+------------------------------------------------------------------+
//|          The program code is generated Modular project generator |
//|                      Copyright 2010-2017, Sergey Pavlov (DC2008) |
//|                              http://www.mql5.com/ru/users/dc2008 |
//+------------------------------------------------------------------+
#property copyright "Copyright 2010-2017, Sergey Pavlov (DC2008)"
#property link      "http://www.mql5.com/ru/users/dc2008"
#property link      "1.00"
#property link      "Example of a multimodule expert: project tf-test-g1 module Trading signals"
//--- Display indicator in the chart window
#property indicator_chart_window
//--- Number of buffers to calculate the indicator
#property indicator_buffers 1
//--- Number of graphic series in the indicator
#property indicator_plots   1
//---
input    int      i_band_period=20;    // band_period=20
input    int      i_band_shift=0;      // band_shift=0
input    double   i_deviation=3.5;     // i_deviation=3.5
ENUM_APPLIED_PRICE i_EAP=PRICE_CLOSE;  // i_EAP=PRICE_CLOSE
double      Buffer1[];
//--- Variable for storing the indicator iBands handle
int    handle_Bands;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit()
{
   handle_Bands=iBands(_Symbol,_Period,i_band_period,i_band_shift,i_deviation,i_EAP);
//---
   ArraySetAsSeries(Buffer1,true);
   SetIndexBuffer(0,Buffer1,INDICATOR_DATA);
   PlotIndexSetString(0,PLOT_LABEL,"Signal");
   ChartIndicatorAdd(0,0,handle_Bands);
   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[])
{
   double signal=0.0;
   ArraySetAsSeries(high,true);
   ArraySetAsSeries(low,true);
//--- Indicator buffers
   double         UpperBuffer[];
   double         LowerBuffer[];
   ArraySetAsSeries(UpperBuffer,true);
   CopyBuffer(handle_Bands,1,0,1,UpperBuffer);
   ArraySetAsSeries(LowerBuffer,true);
   CopyBuffer(handle_Bands,2,0,1,LowerBuffer);
//--- calculation of the Trading signals
   if(high[0]>UpperBuffer[0]) signal=-2.0;
   if(low[0]<LowerBuffer[0]) signal=2.0;
   Buffer1[0]=signal;
   return(rates_total);
};
//+------------------------------------------------------------------+