DailyHighLowHistory AHA 0_1

//+------------------------------------------------------------------+
//|                                  DailyHighLowHistory AHA 0_1.mq4 |
//|                                                     Hua Ai (aha) |
//|                                                                  |
//+------------------------------------------------------------------+
#property copyright "Hua Ai (aha)"
#property link      ""

#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Green
#property indicator_color2 Red
//---- buffers
double PrevHigh[];
double PrevLow[];

bool startup;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators
   SetIndexStyle(0,DRAW_LINE);
   SetIndexBuffer(0,PrevHigh);
   SetIndexStyle(1,DRAW_LINE);
   SetIndexBuffer(1,PrevLow);
//----
   startup=true;

   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
//----
   startup=false;
   
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
  {
   datetime yesterday, today;
   string tempdate, sy, sm, sd;
   double yesterday_close,yesterday_high,yesterday_low;
   double R;
   int shift, offset, year, month, day, limit, counted_bars;
   
   counted_bars=IndicatorCounted();
   if (counted_bars<0) return(-1);      // check for possible errors
   if (counted_bars>0) counted_bars--;  // last counted bar will be recounted

   offset=PERIOD_D1/Period();
   limit=Bars-offset-counted_bars;
   
   for(int i=limit;i>=0;i--) 
   {
      //if (!startup) return(0);
      //if(startup)
      //{
         today=iTime(NULL, 0, i);
         //Print("yesterday=", TimeToStr(yesterday));
         year=TimeYear(today);
         month=TimeMonth(today);
         day=TimeDay(today);
         if(month<10) sm="0"+month; else sm=month;
         if(day<10) sd="0"+day; else sd=day;
         tempdate=year+"."+sm+"."+sd+" 00:00";
         //Print("tempdate=", tempdate);
         today=StrToTime(tempdate);
         
         shift=iBarShift(NULL,PERIOD_D1,today)+1;
         //if(TimeDayOfWeek(today)==0) shift+=1;
         if (TimeDayOfWeek(today)==1) shift+=1;
         //yesterday_close=iClose(NULL,PERIOD_D1,shift);
         yesterday_high=iHigh(NULL,PERIOD_D1,shift);
         yesterday_low=iLow(NULL,PERIOD_D1,shift);

//      if(yesterday==D'2006.11.06 00:00')
         {
            //Print("yesterday_close=", yesterday_close);
            //Print("yesterday_high=", yesterday_high);
            //Print("yesterday_low=", yesterday_low);
         }
         
         PrevHigh[i] = yesterday_high;
         PrevLow[i]  = yesterday_low;
      //}
   }

   startup=false;
   
//----
   return(0);
  }
//+------------------------------------------------------------------+