Lesson 9 Buy sell stop Order - MetaTrader 5용 expert

I. Main function

1. Using condition buy or sell base on price action.

2. Auto caculate lot size

3. Auto trailling stop by ATR.

4. Backtest result

II. Main tick function

//+------------------------------------------------------------------+
//| Expert tick function                                             |
//+------------------------------------------------------------------+
void OnTick()
 {
   if(OpenBar(Symbol())) 
   {
   OrderManaging();
 // Candle declaration
 double High[],Low[],open[],close[];
 ArraySetAsSeries(High,true);ArraySetAsSeries(Low,true);ArraySetAsSeries(close,true);ArraySetAsSeries(open,true);
 CopyHigh(Symbol(),timeframe,0,1000,High);
 CopyLow(Symbol(),timeframe,0,1000,Low);
 CopyOpen(_Symbol,timeframe,0,100,open);
 CopyClose(_Symbol,timeframe,0,100,close);
 
// Highest high and lowest low declaration
int highest= ArrayMaximum(High,HL_shift,HL_period);
int lowest= ArrayMinimum(Low,HL_shift,HL_period); 

double  HH= High[highest];
//Drawline(" Kháng Cự ", clrRed,HH);
double  LL= Low[lowest];
//Drawline(" hỗ trợ ", clrBlue,LL);

// Moving average declaration
CopyBuffer(Handle_MA,0,0,100,MA_Filter);
ArraySetAsSeries(MA_Filter,true);

 // Atr declaration
 ArraySetAsSeries(atr,true); CopyBuffer(hand_atr,0,0,50,atr);
 
 // Volume and MA_volume array buffe
 ArraySetAsSeries(Volume,true); ArraySetAsSeries(MA_volume,true);
 CopyBuffer(handle_volume,0,0,50,Volume);
 CopyBuffer(handle_MA_volume,0,0,50,MA_volume);
//+------------------------------------------------------------------+
//|   Broker parameter                                               |
//+------------------------------------------------------------------+     
double point = SymbolInfoDouble(_Symbol,SYMBOL_POINT);
double ask= SymbolInfoDouble(_Symbol,SYMBOL_ASK);
double bid= SymbolInfoDouble(_Symbol,SYMBOL_BID);
double spread=ask-bid;
double stoplevel= (int)SymbolInfoInteger(_Symbol,SYMBOL_TRADE_STOPS_LEVEL);
int freezerlevel= (int)SymbolInfoInteger(_Symbol,SYMBOL_TRADE_FREEZE_LEVEL); 
 
 // Count bjuy and count sell
 int count_buy=0; int count_sell=0;
 count_position(count_buy,count_sell,atr);

 // Main condition for buy and sell
    if(count_buy==0  )
    
     {      
       if( High[highest] > MA_Filter[highest]   )
       
        {
         double  entryprice= HH;
         double  sl        = LL;
         double  tp        = entryprice   +TP_factor*atr[1];
         double lotsize    = calculate_lotsize(sl,entryprice);
        if( entryprice>ask+stoplevel && entryprice-sl>stoplevel && tp-entryprice>stoplevel)
         {
          trade.BuyStop(lotsize,entryprice,_Symbol,sl,tp,ORDER_TIME_DAY);
        
         }
       }
     }
    if(count_sell==0)
     {  
     if( Low[lowest] < MA_Filter[lowest])   
        {
         double  entryprice= LL;
         double  sl        = HH;
         double  tp        = entryprice   -TP_factor*atr[1];
         double lotsize    = calculate_lotsize(sl,entryprice);
         if( entryprice<bid-stoplevel && sl-entryprice>stoplevel && entryprice-tp>stoplevel)
         {
         trade.SellStop(lotsize,entryprice,_Symbol,sl,tp,ORDER_TIME_DAY);
         }
        }
     }
   
  }
 
  }