How to run script with prefix and suffix pair?

[Sunarto Sosrosaputro]

Hello, can someone help me?

I'm newbie on mql programming, how to run script with prefix and suffix pair?
This script has been run successfully on basic pair ( no prefix and suffix). Thank you

#property copyright "Copyright 2021, MetaQuotes Software Corp."
#property link      "https://www.mql5.com"
#property version   "1.00"
#property strict

input bool UseCloseBy = false;
//+------------------------------------------------------------------+
//| Script program start function                                    |
//+------------------------------------------------------------------+
void OnStart()
  {
//---
   QnClose();
  }
//+------------------------------------------------------------------+

void QnClose()
{
   if(!OrderSelect(OrdersTotal()-1,SELECT_BY_POS)) return;
   double OCP = OrderClosePrice();
   int    OTK = OrderTicket();
   
   if(UseCloseBy){
   //closed order by hedging
   int    OTY = OrderType();
   double OLT = OrderLots();
   string OSY = OrderSymbol();
   int    CBT = 0;
   double CBP = 0;
   int    CBC = -1;
   string CBN = "Fake Spread";
   bool   CBR = false;
   
   if(OTY>1) return;
   if(OTY==0) {
      CBP = MarketInfo(OSY,MODE_BID);
      CBC = 1;
      CBT = OrderSend(OSY,CBC,OLT,CBP,0,0,0,CBN);
   }
   if(OTY==1) {
      CBP = MarketInfo(OSY,MODE_ASK);
      CBC = 0;
      CBT = OrderSend(OSY,CBC,OLT,CBP,0,0,0,CBN);
   }
   if(CBT>0) {
      Sleep(2000);
      int try = 10;
      while(try>0) {
         try--;
         CBR = OrderCloseBy(OTK,CBT);
         if(CBR) break;
         Sleep(500);
      }
   }
   if(!CBR) {
      Alert("Gagal Close By. Err: ",GetLastError());
      return;
   }
   
   } else {
   bool  rCls= OrderClose(OrderTicket(),OrderLots(),OrderClosePrice(),0);
   if(!rCls) {
      Alert("Gagal Close. Err: ",GetLastError());
      return;
   }//*/
   }
   if(!OrderSelect(OTK,SELECT_BY_TICKET,MODE_HISTORY)){
      Alert("Gagal check history close. Err: ",GetLastError());
      return;
   }
   double OCPH = OrderClosePrice();
   int    Gap = 0;
   if(OrderType()%2==0){
      Gap = int((OCPH-OCP)/MarketInfo(OrderSymbol(),MODE_POINT));
   } else {
      Gap = int((OCP-OCPH)/MarketInfo(OrderSymbol(),MODE_POINT));
   }
   Alert("spread added: ",Gap);
}
   
   
      
   

[Shino Unada]

spirit:

Hello, can someone help me?

I'm newbie on mql programming, how to run script with prefix and suffix pair?
This script has been run successfully on basic pair ( no prefix and suffix). Thank you

I don't think this script needs to take into account prefixes and suffixes, what's the problem?

[William Roeder]

1. You already have the OrderSymbol. What more do you need?

2. if(!OrderSelect(OrdersTotal()-1,SELECT_BY_POS)) return;

   This selects the most recent order. Not the order on the current chart.
   

[Ahmet Metin Yilmaz]

use StringSubstr

[Keith Watford]

Ahmet Metin Yilmaz:
use StringSubstr

Why?

[Ahmet Metin Yilmaz]

To determine prefix and suffix.

[Keith Watford]

Ahmet Metin Yilmaz:
To determine prefix and suffix.

I don't see how you can do that withStringSubstr().

[Ahmet Metin Yilmaz]

Keith Watford:

I don't see how you can do that withStringSubstr().

Use Symbol () as the string value and decide from which pos to read it from.

[Keith Watford]

Ahmet Metin Yilmaz:

Use Symbol () as the string value and decide from which pos to read it from.

That's what I don't understand. How do you decide which position to read from?

Yes, it is easy to know for a prefix as that will be 0, but how do you determine...

a. Is there a prefix?

b. The length of the prefix?

For a suffix, how do you determine...

a. Is there a suffix?

b. The start position of the suffix?

[Ahmet Metin Yilmaz]

Keith Watford:

That's what I don't understand. How do you decide which position to read from?

Yes, it is easy to know for a prefix as that will be 0, but how do you determine...

a. Is there a prefix?

b. The length of the prefix?

For a suffix, how do you determine...

a. Is there a suffix?

b. The start position of the suffix?

I never tried for prefix but you can find to suffix easily ( if there )

if there is no suffix it returns nothing

[Keith Watford]

Ahmet Metin Yilmaz:

I never tried for prefix but you can find to suffix easily ( if there )

if there is no suffix it returns nothing

Ok, so it is not possible for a prefix then.

I still don't understand....

For a suffix, how do you determine...

a. Is there a suffix?

b. The start position of the suffix?