ADX Crossing_Alert

//+------------------------------------------------------------------+
//|                                           ADX Crossing_Alert.mq4 |
//|                      Copyright © 2006, MetaQuotes Software Corp. |
//|                                        http://www.metaquotes.net |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2006, 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 ADXbars=14;
extern int CountBars=350;
extern bool UseSound = True;
extern string SoundFile = "expert.wav"; 

//---- buffers
double val1[];
double val2[];
double b4plusdi,nowplusdi,b4minusdi,nowminusdi;
bool SoundBuy = False;
bool SoundSell = False;

//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
   string short_name;
//---- indicator line
   IndicatorBuffers(2);
   SetIndexStyle(0,DRAW_ARROW);
   SetIndexArrow(0,233);
   SetIndexStyle(1,DRAW_ARROW);
   SetIndexArrow(1,234);
   SetIndexBuffer(0,val1);
   SetIndexBuffer(1,val2);
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| AltrTrend_Signal_v2_2                                            |
//+------------------------------------------------------------------+
int start()
  {   
   if (CountBars>=Bars) CountBars=Bars;
   SetIndexDrawBegin(0,Bars-CountBars);
   SetIndexDrawBegin(1,Bars-CountBars);
   int i,shift,limit,CountedBars = IndicatorCounted();
   
if (CountedBars < 1)
   {
    for (i=0; i<=CountBars; i++) {val1[i] = 0.0; val2[i] = 0.0;}
   }    
   
if(CountedBars > 0) CountedBars--;
limit = Bars - CountedBars;   

for (shift = limit; shift>=0; shift--) 
{ 
	b4plusdi=iADX(NULL,0,ADXbars,PRICE_CLOSE,MODE_PLUSDI,shift+1);
	nowplusdi=iADX(NULL,0,ADXbars,PRICE_CLOSE,MODE_PLUSDI,shift);
	b4minusdi=iADX(NULL,0,ADXbars,PRICE_CLOSE,MODE_MINUSDI,shift+1);
	nowminusdi=iADX(NULL,0,ADXbars,PRICE_CLOSE,MODE_MINUSDI,shift); 
if (b4plusdi<b4minusdi && nowplusdi>nowminusdi)
{
	val1[shift]=Low[shift]-5*Point;
}
if (b4plusdi>b4minusdi && nowplusdi<nowminusdi) 
{
	val2[shift]=High[shift]+5*Point;
}


}
if (val1[0] != EMPTY_VALUE && val1[0] != 0 && SoundBuy)
  {
   SoundBuy = False;
   if (UseSound) PlaySound (SoundFile);
   Comment (Symbol()," ",Period(),"ADX Crossing BUY @ ",Ask);
// Alert (Symbol()," ",Period(),"ADX Crossing BUY @ ",Ask);
  } 
if (!SoundBuy && (val1[0] == EMPTY_VALUE || val1[0] == 0)) SoundBuy = True;  
  
if (val2[0] != EMPTY_VALUE && val2[0] != 0 && SoundSell)
  {
   SoundSell = False;
   if (UseSound) PlaySound (SoundFile);
   Comment (Symbol()," ",Period(), "ADX Crossing Sell @",Bid);
// Alert (Symbol()," ",Period(), "ADX Crossing Sell @",Bid);
  }
if (!SoundSell && (val2[0] == EMPTY_VALUE || val2[0] == 0)) SoundSell = True;  
     
return(0);
}
//+------------------------------------------------------------------+