OrderModify in MQL5

[David Diez]

I'm translating an own expert form MQL4 to MQL5, when I check TradeFunctions on MQL5 refrence there's no OrderModify function.

This is a piece of the code:

if(!OrderModify(OrderTicket(),0,StopLoss,OrderGetDouble(ORDER_TP),0,clrBlue)){

Thank you in advance.

[karachiento]

David Diez:

Estoy traduciendo una forma experta propia de MQL4 a MQL5, cuando verifico TradeFunctions en MQL5, no hay una función OrderModify.

Esta es una parte del código:

Gracias de antemano.

Puedes usar la clase cTrade (no es la unica forma)

https://www.mql5.com/es/docs/standardlibrary/tradeclasses/ctrade   

Ejemoplo:

//Al inicio, fuera de OnInit()

#include <Trade/Trade.mqh>

CTrade trade;

int OnInit()

{

....

....

....

...

if(!trade.PositionModify(ticket, sl, tp))

   {

    Print ("La orden para modificar sl y tp no se ha podido colocar!!! Error: ",GetLastError());     // si no se ha logrado enviar la solicitud, mostrar el código de error

    return;

   }

....  

}

saludos

[Marco vd Heijden]

#define EXPERT_MAGIC 123456   // MagicNumber of the expert 
// + ------------------------------------- ----------------------------- + 
// | Modification of Stop Loss and Take Profit of position | 
// + ----------------------------------------------- ------------------- + 
void  OnStart () 
  { 
// --- declare and initialize the trade request and result of trade request 
   MqlTradeRequest request; 
   MqlTradeResult   result; 
   int total = PositionsTotal (); // number of open positions    
// --- iterate over all open positions 
   for ( int i = 0; i <total; i ++) 
     { 
      // --- parameters of the order 
      ulong   position_ticket = PositionGetTicket (i); // ticket of the position 
      string position_symbol = PositionGetString ( POSITION_SYMBOL ); // symbol 
      int     digits = ( int ) SymbolInfoInteger (position_symbol, SYMBOL_DIGITS ); // number of decimal places 
      ulong   magic = PositionGetInteger ( POSITION_MAGIC ); // MagicNumber of the position 
      double volume = PositionGetDouble (POSITION_VOLUME );    // volume of the position 
      double sl = PositionGetDouble ( POSITION_SL );  // Stop Loss of the position 
      double tp = PositionGetDouble ( POSITION_TP );  // Take Profit of the position 
      ENUM_POSITION_TYPE type = ( ENUM_POSITION_TYPE ) PositionGetInteger ( POSITION_TYPE );  // type of the position 
      // --- output information about the position 
      PrintFormat ( "#% I64u% s% s% .2f% s sl:% s tp:% s [% I64d]" , 
                  position_ticket,
                  position_symbol, 
                  EnumToString (type), 
                  volume, 
                  DoubleToString ( PositionGetDouble ( POSITION_PRICE_OPEN ), digits), 
                  DoubleToString (sl, digits), 
                  DoubleToString (tp, digits), 
                  magic); 
      // --- if the MagicNumber matches, Stop Loss and Take Profit are not defined 
      if (magic == EXPERT_MAGIC && sl == 0 && tp == 0 ) 
        { 
         // --- calculate the current price levels 
         double price = PositionGetDouble ( POSITION_PRICE_OPEN ); 
         doublebid = SymbolInfoDouble (position_symbol, SYMBOL_BID ); 
         double ask = SymbolInfoDouble (position_symbol, SYMBOL_ASK ); 
         int     stop_level = ( int ) SymbolInfoInteger (position_symbol, SYMBOL_TRADE_STOPS_LEVEL ); 
         double price_level; 
         // --- if the minimum allowed offset distance in points from the current close price is not set 
         if (stop_level <= 0 ) 
            stop_level = 150 ; // set the offset distance of 150 points from the current close price 
         else
             stop_level + =50 ; // set the offset distance to (SYMBOL_TRADE_STOPS_LEVEL + 50) points for reliability 
 
         // --- calculation and rounding of the Stop Loss and Take Profit values
          price_level = stop_level * SymbolInfoDouble (position_symbol, SYMBOL_POINT ); 
         if (type == POSITION_TYPE_BUY ) 
           { 
            sl = NormalizeDouble (bid-price_level, digits); 
            tp = NormalizeDouble (bid + price_level, digits); 
           } 
         else
            { 
            sl = NormalizeDouble (ask + price_level, digits); 
            tp =NormalizeDouble (ask-price_level, digits); 
           } 
         // --- zeroing the request and result values 
         ZeroMemory (request); 
         ZeroMemory (result); 
         // --- setting the operation parameters
          request.action = TRADE_ACTION_SLTP ; // type of trade operation
          request.position = position_ticket;   // ticket of the position
          request.symbol = position_symbol;     // symbol
          request.sl = sl;                // Stop Loss of the position
          request.tp = tp;                // Take Profit of the position
          request.magic = EXPERT_MAGIC;         // MagicNumber of the position 
         // --- output information about the modification 
         PrintFormat ( "Modify #% I64d% s% s" , position_ticket, position_symbol, EnumToString (type)); 
         // --- send the request 
         if (! OrderSend (request, result)) 
            PrintFormat ( "OrderSend error% d" , GetLastError ());  // if unable to send the request, output the error code 
         // --- information about the operation    
         PrintFormat ( "retcode =% u deal =% I64u order =% I64u" , result.retcode, result.deal, result.order ); 
        } 
     } 
  }
// + ----------------------------------------------- ------------------- +

Example of the  TRADE_ACTION_SLTP  trade operation for modifying the Stop Loss and Take Profit values ​​of an open position.

SL & TP Modification

Trade order to modify the StopLoss and/or TakeProfit price levels. It requires to specify the following 4 fields:

• action
• symbol
• sl
• tp
• position

[Imanol Salazar Garcia]

You have better example in the documentation. But the optimal idea is to use CTrade class like said "karachiento".