OrderCalcMargin equivalent for mql4

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Hello, What is the function equivalent to OrderCalcMargin from mql5, for mql4?

Thank you

 

Risk depends on your initial stop loss, lot size, and the value of the symbol. It does not depend on margin and leverage. No SL means you have infinite risk (on leveraged symbols). Never risk more than a small percentage of your trading funds, certainly less than 2% per trade, 6% total.

  1. You place the stop where it needs to be — where the reason for the trade is no longer valid. E.g. trading a support bounce, the stop goes below the support.

  2. AccountBalance * percent/100 = RISK = OrderLots * (|OrderOpenPrice - OrderStopLoss| * DeltaPerLot + CommissionPerLot) (Note OOP-OSL includes the spread, and DeltaPerLot is usually around $10/PIP, but it takes account of the exchange rates of the pair vs. your account currency.)

  3. Do NOT use TickValue by itself - DeltaPerLot and verify that MODE_TICKVALUE is returning a value in your deposit currency, as promised by the documentation, or whether it is returning a value in the instrument's base currency.
              MODE_TICKVALUE is not reliable on non-fx instruments with many brokers - MQL4 programming forum (2017)
              Is there an universal solution for Tick value? - Currency Pairs - General - MQL5 programming forum (2018)
              Lot value calculation off by a factor of 100 - MQL5 programming forum (2019)

  4. You must normalize lots properly and check against min and max.

  5. You must also check Free Margin to avoid stop out

  6. For MT5, see 'Money Fixed Risk' - MQL5 Code Base (2017)

Most pairs are worth about $10 per PIP. A $5 risk with a (very small) 5 PIP SL is $5/$10/5 or 0.1 Lots maximum.

 
William Roeder #:

Risk depends on your initial stop loss, lot size, and the value of the symbol. It does not depend on margin and leverage. No SL means you have infinite risk (on leveraged symbols). Never risk more than a small percentage of your trading funds, certainly less than 2% per trade, 6% total.

  1. You place the stop where it needs to be — where the reason for the trade is no longer valid. E.g. trading a support bounce, the stop goes below the support.

  2. AccountBalance * percent/100 = RISK = OrderLots * (|OrderOpenPrice - OrderStopLoss| * DeltaPerLot + CommissionPerLot) (Note OOP-OSL includes the spread, and DeltaPerLot is usually around $10/PIP, but it takes account of the exchange rates of the pair vs. your account currency.)

  3. Do NOT use TickValue by itself - DeltaPerLot and verify that MODE_TICKVALUE is returning a value in your deposit currency, as promised by the documentation, or whether it is returning a value in the instrument's base currency.
              MODE_TICKVALUE is not reliable on non-fx instruments with many brokers - MQL4 programming forum (2017)
              Is there an universal solution for Tick value? - Currency Pairs - General - MQL5 programming forum (2018)
              Lot value calculation off by a factor of 100 - MQL5 programming forum (2019)

  4. You must normalize lots properly and check against min and max.

  5. You must also check Free Margin to avoid stop out

  6. For MT5, see 'Money Fixed Risk' - MQL5 Code Base (2017)

Most pairs are worth about $10 per PIP. A $5 risk with a (very small) 5 PIP SL is $5/$10/5 or 0.1 Lots maximum.

Thanks.

The reason for my question is that I have an EA in MQL5 and I am converting it to MQL4. The MQL5 function bool OrderCalcMargin(...) is not defined in MQL4. I am looking for one that is equivalent.

 
Antonio Simon Del Vecchio:

Hello, What is the function equivalent to OrderCalcMargin from mql5, for mql4?

Thank you

THe function I use is the following: 

double OrderCalcMargin(int cmd,string symbol, double volume)
{  
   double CostofLot = AccountFreeMargin() - AccountFreeMarginCheck(symbol,cmd,1);
   return CostofLot * volume;
}

Not exactly the same but it's a solution.

Hope I could help.

 
Peter Mueller #:

THe function I use is the following: 

Not exactly the same but it's a solution.

Hope I could help.

I think this version would be better to account for positions that require more margin that you have:

bool OrderCalcMargin(int trade_type, string symbol, double trade_volume, double open_price, double &margin_required)
{
   double remaining_margin = AccountFreeMarginCheck(symbol, trade_type, trade_volume);
   
   if (remaining_margin > 0) margin_required = AccountFreeMargin() - remaining_margin;   
   else margin_required = AccountFreeMargin() + MathAbs(remaining_margin);
   
   return true;
}

Using that format for MQL4 can allow for usage in both platforms with #ifdef directives for conditional compilation depending on if you're working on MQL4 or MQL5

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