//+------------------------------------------------------------------+
//|                  Daily Open-SR Technique                         |
//|                                                         DOSR.mq4 |
//|                                              Developed by mqldev |
//|                                            http://www.mqldev.com |
//+------------------------------------------------------------------+

#property link      "http://www.mqldev.com"


#property indicator_chart_window

extern color   ResistanceColor = Red;
extern color   SupportColor    = Blue;
extern color   TodayOpenColor  = Yellow;

int init()
{
   DelObjs();
   return(0);
}
int deinit()
{
   DelObjs();
   return(0);
}

void start()
{
   double c = iClose(NULL,PERIOD_D1,1);
   double o = iOpen(NULL,PERIOD_D1,1);
   double h = iHigh(NULL,PERIOD_D1,1);
   double l = iLow(NULL,PERIOD_D1,1);
   double to = iOpen(NULL,PERIOD_D1,0);
   
   
   Print("close:",c," open:",o," high:",h," low:",l);
   
   if (c>=o)
   {
      DrawLine(h,"Resistance",ResistanceColor);
      DrawLine(o,"Support",SupportColor);
   }
   else
   {
      DrawLine(o,"Resistance",ResistanceColor);
      DrawLine(l,"Support",SupportColor);
   }
      DrawLine(to,"Today Open",TodayOpenColor);

   return(0);
}

int DrawLine(double price  , string Obj , color clr)
{

   int objs = ObjectsTotal();
   string name;
   for(int cnt=ObjectsTotal()-1;cnt>=0;cnt--)
   {
      name=ObjectName(cnt);
      if (StringFind(name,Obj,0)>-1) 
      {
         ObjectMove(Obj,0,Time[0],price);
         ObjectsRedraw();
         return(1);
      }
   }
   ObjectCreate(Obj,OBJ_HLINE,0,0,price);
   ObjectSet(Obj,OBJPROP_COLOR,clr);
   WindowRedraw();
   return(0);
}

void DelObjs()
{
   int objs = ObjectsTotal();
   string name;
   for(int cnt=ObjectsTotal()-1;cnt>=0;cnt--)
   {
      name=ObjectName(cnt);
      if (StringFind(name,"L",0)>-1) ObjectDelete(name);
      WindowRedraw();
   }
}