نمونه کد MQL4: بستن همه معاملات باز روی چارت فعلی

				
					int start()
{
   double total;
   while(OpenTradesForSymbol()>0)
   {
      //close opened orders first
      total = OrdersTotal();
      for (int cnt = total-1; cnt >=0 ; cnt--)
      {
         if(OrderSelect(cnt,SELECT_BY_POS,MODE_TRADES)) 
         {
            if(OrderSymbol()==Symbol())
            {
               switch(OrderType())
               {
                  case OP_BUY       :
                     OrderClose(OrderTicket(),OrderLots(),MarketInfo(OrderSymbol(),MODE_BID),3,Violet);break;
                   
                  case OP_SELL      :
                     OrderClose(OrderTicket(),OrderLots(),MarketInfo(OrderSymbol(),MODE_ASK),3,Violet); break;
               } 
            }            
         }
      }
      
      // and close pending
      total = OrdersTotal();      
      for (cnt = total-1; cnt >=0 ; cnt--)
      {
         if(OrderSelect(cnt,SELECT_BY_POS,MODE_TRADES)) 
         {
            if(OrderSymbol()==Symbol())
            {
               switch(OrderType())
               {
                  case OP_BUYLIMIT  :OrderDelete(OrderTicket()); break;
                  case OP_SELLLIMIT :OrderDelete(OrderTicket()); break;
                  case OP_BUYSTOP   :OrderDelete(OrderTicket()); break;
                  case OP_SELLSTOP  :OrderDelete(OrderTicket()); break;
               }
            }
         }
      }
   }
   return(0);
}

int OpenTradesForSymbol()
{
   int icnt, itotal, retval;

   retval=0;
   itotal=OrdersTotal();

      for(icnt=itotal-1;icnt>=0;icnt--) 
      {
         OrderSelect(icnt, SELECT_BY_POS, MODE_TRADES);
         if (OrderSymbol()== Symbol())
         {
             retval++;             
         } 
      }

   return(retval);
}