Equivalent of MarketInfo(Symbol(), MODE_MARGINREQUIRED) in MT5

Money Management
#1

how to convert MarketInfo(Symbol(), MODE_MARGINREQUIRED) to mt5 version

#2

It is a little more complicate in MT5 because it can operate on several different markets, not just Forex, where the calculation of Margin can be different on each one.

Instead, you can use the OrderCalcMargin() function!

bool  OrderCalcMargin(
   ENUM_ORDER_TYPE       action,           // type of order
   string                symbol,           // symbol name
   double                volume,           // volume
   double                price,            // open price
   double&               margin            // variable for obtaining the margin value
   );
#3

thanks for your reply. but OrderCalcMargin return a bool, I need a double

#4

Read the documentation again!

bool  OrderCalcMargin(
   ENUM_ORDER_TYPE       action,           // type of order
   string                symbol,           // symbol name
   double                volume,           // volume
   double                price,            // open price
   double&               margin            // variable for obtaining the margin value
   );

margin

[out] The variable, to which the value of the required margin will be written in case the function is successfully executed. The calculation is performed as if there were no pending orders and open positions on the current account. The margin value depends on many factors, and can differ in different market environments.

#5 
// Размер свободных средств, необходимых для открытия 1 лота на покупку
double GetMarginRequired( const string Symb )
{
  MqlTick Tick;
  double MarginInit, MarginMain;

  return((SymbolInfoTick(Symb, Tick) && SymbolInfoMarginRate(Symb, ORDER_TYPE_BUY, MarginInit, MarginMain)) ? MarginInit * Tick.ask *
          SymbolInfoDouble(Symb, SYMBOL_TRADE_TICK_VALUE) / (SymbolInfoDouble(Symb, SYMBOL_TRADE_TICK_SIZE) * AccountInfoInteger(ACCOUNT_LEVERAGE)) : 0);
}

// Альтернатива OrderCalcMargin
bool MyOrderCalcMargin( const ENUM_ORDER_TYPE action, const string symbol, const double volume, const double price, double &margin )
{
  double MarginInit, MarginMain;

  const bool Res = SymbolInfoMarginRate(symbol, action, MarginInit, MarginMain);
  
  margin = Res ? MarginInit * price * volume * SymbolInfoDouble(symbol, SYMBOL_TRADE_TICK_VALUE) /
                 (SymbolInfoDouble(symbol, SYMBOL_TRADE_TICK_SIZE) * AccountInfoInteger(ACCOUNT_LEVERAGE)) : 0;
  
  return(Res);  
}
#6

According to ENUM_SYMBOL_CALC_MODE documentation, I’m not sure that margin can be calculated via current price unconditionally as in the presented code - there are cases when formulae differ.

#7

It is necessary that someone checked.

#8

It can’t be. Depends of the symbol : Forex (yes), Futures (No)…