//+------------------------------------------------------------------+
//|                                                  Custom MACD.mq4 |
//|                      Copyright © 2004, MetaQuotes Software Corp. |
//|                                       http://www.metaquotes.net/ |
//+------------------------------------------------------------------+
#property  copyright "Copyright © 2004, MetaQuotes Software Corp."
#property  link      "http://www.metaquotes.net/"
//---- indicator settings
#property  indicator_separate_window
#property  indicator_buffers 2
#property  indicator_color1  Silver
#property  indicator_color2  Red
#property  indicator_width1  2
#property indicator_width2 2

//---- indicator parameters
extern int     WPR_Period=21;
extern int     MA_Period=14;
extern string  m = "--Moving Average Types--";
extern string  m0 = " 0 = SMA";
extern string  m1 = " 1 = EMA";
extern string  m2 = " 2 = SMMA";
extern string  m3 = " 3 = LWMA";
extern int       MA_Type=1;
//---- indicator buffers
double     WPR_Buffer[];
double     MA_Buffer[];

int    MA_Mode;
string strMAType;

//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- drawing settings
   SetIndexStyle(0,DRAW_LINE);
   SetIndexStyle(1,DRAW_LINE);
   SetIndexDrawBegin(1,WPR_Period);
   IndicatorDigits(Digits+1);
//---- indicator buffers mapping
   SetIndexBuffer(0,WPR_Buffer);
   SetIndexBuffer(1,MA_Buffer);
//---- name for DataWindow and indicator subwindow label
switch (MA_Type)
   {
      case 1: strMAType="EMA"; MA_Mode=MODE_EMA; break;
      case 2: strMAType="SMMA"; MA_Mode=MODE_SMMA; break;
      case 3: strMAType="LWMA"; MA_Mode=MODE_LWMA; break;
      default: strMAType="SMA"; MA_Mode=MODE_SMA; break;
   }
   IndicatorShortName( "WPR" + " (" + WPR_Period + ") " + " : " + strMAType+ " (" +MA_Period + ") ");
   SetIndexLabel(0,"WPR" + " (" +WPR_Period + ") ");
   SetIndexLabel(1,strMAType+ " (" + MA_Period + ") ");
//---- initialization done
   return(0);
  }
//+------------------------------------------------------------------+
//| Moving Averages Convergence/Divergence                           |
//+------------------------------------------------------------------+
int start()
  {
   int limit;
   int counted_bars=IndicatorCounted();
//---- last counted bar will be recounted
   if(counted_bars>0) counted_bars--;
   limit=Bars-counted_bars;
//---- WPR counted in the 1-st buffer
   for(int i=0; i<limit; i++)
      WPR_Buffer[i]=iWPR(NULL,0,WPR_Period,i);
//---- MA line counted in the 2-nd buffer
   for(i=0; i<limit; i++)
      MA_Buffer[i]=iMAOnArray(WPR_Buffer,Bars,MA_Period,0,MA_Mode,i);
//---- done
   return(0);
  }
//+------------------------------------------------------------------+