Tutorial 17 : Memasukkan Teknik “Failsafe”

//+------------------------------------------------------------------+
//|                                                   tutorial17.mq4 |
//|                        Copyright 2020, MetaQuotes Software Corp. |
//|                                            https://triantoadi.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2020, MetaQuotes Software Corp."
#property link      "https://triantoadi.com"
#property version   "1.00"
#property strict
#property script_show_inputs
//+------------------------------------------------------------------+
//| Script program start function                                    |
//+------------------------------------------------------------------+
extern int TakeProfit = 100;
extern int StopLoss = 100;

void OnStart()
   {
      double TakeProfitLevel;
      double StopLossLevel;
      
      TakeProfitLevel = Bid + TakeProfit*Point;
      StopLossLevel = Bid - StopLoss*Point;
     
      /*
      OrderSend can return : 1.Order ticket# or 2.Fail signal (-1)
      */
      int ticket;
      ticket = OrderSend("EURUSD", OP_BUY, 1.0, Ask, 10, StopLossLevel, TakeProfitLevel, "My 1st Order !");
      
      if(ticket < 0)
      {
      Alert("Error !");
      }
      else
      {
      Alert("Your #ticket is = " + string (ticket));
      }
      
   }