Select orders and the MagicNumber

[Taki Eddine]

Hello Everyone

i have this function on mql4 to check if there is an opened order with specific magic number:

bool CheckIfOpenOrdersByMagicNB(int magicNB)
{
   int openOrders = OrdersTotal();
   
   for(int i = 0; i < openOrders; i++)
   {
      if(OrderSelect(i,SELECT_BY_POS)==true)
      {
         if(OrderMagicNumber() == magicNB) 
         {
            return true;
         }  
      }
   }
   return false;
}

i want to migrate it to mql5,

i can't find documentation to select orders by pos  

OrderSelect(i,SELECT_BY_POS)==true

 or to get the MagicNumber

OrderMagicNumber() == magicNB

[Carl Schreiber]

Here are all trading functions for MT5: https://www.mql5.com/en/docs/trading

Look for OrderGetInteger().

This might help as well:

Migrate MQL4 to MQL5: https://www.mql5.com/en/articles/81
Transferring Indicators from MQL4 to MQL5: https://www.mql5.com/en/articles/66

and this: https://www.mql5.com/en/articles/639

[William Roeder]

Taki Eddine: i have this function on mql4 

1. Why did you post your MT4 question in the MT5 General section instead of the MQL4 section, (bottom of the Root page)?
             General rules and best pratices of the Forum. - General - MQL5 programming forum? (2017)
   Next time, post in the correct place. The moderators will likely move this thread there soon.

2. Magic number only allows an EA to identify its trades from all others. Using OrdersTotal/OrdersHistoryTotal (MT4) or PositionsTotal (MT5), directly and/or no Magic number/symbol filtering on your OrderSelect / Position select loop means your code is incompatible with every EA (including itself on other charts and manual trading.)
             Symbol Doesn't equal Ordersymbol when another currency is added to another seperate chart . - MQL4 programming forum (2013)
             PositionClose is not working - MQL5 programming forum (2020)
             MagicNumber: "Magic" Identifier of the Order - MQL4 Articles (2006)
             Orders, Positions and Deals in MetaTrader 5 - MQL5 Articles (2011)
             Limit one open buy/sell position at a time - General - MQL5 programming forum (2022)

   You need one Magic Number for each symbol/timeframe/strategy.
        Trade current timeframe, one strategy, and filter by symbol requires one MN.
        If trading multiple timeframes, and filter by symbol requires use a range of MN (base plus timeframe).
             Why are MT5 ENUM_TIMEFRAMES strange? - General - MQL5 programming forum - Page 2 #11 (2020)