ADXcrossesAlert

//+------------------------------------------------------------------+
//|                                                   ADXcrosses.mq4 |
//|                      Copyright © 2004, MetaQuotes Software Corp. |
//|                                        http://www.metaquotes.net |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2004, MetaQuotes Software Corp."
#property link "http://www.metaquotes.net"

#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Lime
#property indicator_color2 Red
//---- input parameters
extern int ADXcrossesPeriod=14;
//---- buffers
double ExtMapBuffer1[];
double ExtMapBuffer2[];
extern bool SoundON=true;
double alertBar;
//----
double b4plusdi, b4minusdi, nowplusdi, nowminusdi;
int    nShift;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators
   SetIndexStyle(0, DRAW_ARROW, 0, 1);
   SetIndexArrow(0, 108);
   SetIndexBuffer(0, ExtMapBuffer1);
//----
   SetIndexStyle(1, DRAW_ARROW, 0, 1);
   SetIndexArrow(1, 108);
   SetIndexBuffer(1, ExtMapBuffer2);
//---- name for DataWindow and indicator subwindow label
   IndicatorShortName("ADXcrosses("+ADXcrossesPeriod+")");
   SetIndexLabel(0, "ADXcrUp");
   SetIndexLabel(1, "ADXcrDn");
//----
   switch(Period())
     {
      case     1: nShift=1;   break;
      case     5: nShift=3;   break;
      case    15: nShift=5;   break;
      case    30: nShift=10;  break;
      case    60: nShift=15;  break;
      case   240: nShift=20;  break;
      case  1440: nShift=80;  break;
      case 10080: nShift=100; break;
      case 43200: nShift=200; break;
     }
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custor indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
  {
   int limit;
   int counted_bars=IndicatorCounted();
//---- check for possible errors
   if(counted_bars < 0)
      return(-1);
//---- last counted bar will be recounted
   if(counted_bars > 0)
      counted_bars--;
   limit=Bars - counted_bars;
//----
   for(int i=1; i < limit; i++)
     {
      b4plusdi=iADX(NULL, 0, ADXcrossesPeriod, PRICE_CLOSE, MODE_PLUSDI, i + 1);
      nowplusdi=iADX(NULL, 0, ADXcrossesPeriod, PRICE_CLOSE, MODE_PLUSDI, i);
      b4minusdi=iADX(NULL, 0, ADXcrossesPeriod, PRICE_CLOSE, MODE_MINUSDI, i + 1);
      nowminusdi=iADX(NULL, 0, ADXcrossesPeriod, PRICE_CLOSE, MODE_MINUSDI, i);
      //----
      if(b4plusdi < b4minusdi && nowplusdi > nowminusdi)
        {
         ExtMapBuffer1[i]=Low[i] - nShift*Point;
         if (SoundON==true && Bars>alertBar )
    Alert("ADX UP on ",Symbol()," M",Period()," at Ask=",Ask," Bid=",Bid);
        alertBar = Bars;}
         
      //----
      if(b4plusdi > b4minusdi && nowplusdi < nowminusdi)
         {
         ExtMapBuffer2[i]=High[i] + nShift*Point;
                  if (SoundON==true && Bars>alertBar )
        Alert("ADX Down on ",Symbol()," M",Period()," at Ask=",Ask," Bid=",Bid);
          alertBar = Bars;}
     }
//----
   return(0);
  }
//+------------------------------------------------------------------+