normalize price for textbox

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Hi , When entering a price in a textbox, when I use DoubleToStr and set it to 5, it correctly truncates the price if it is formatted as a number, followed by a comma, and then 7 digits. However, if a price has 4 digits before the comma and then 8 decimal places, it truncates the five decimal places after the comma, resulting in a total of eleven characters including the comma. Is there a function to normalize the numbers in such a way as to avoid this issue?
 

Cant reproduce the issue , a code example would help.

 
Lorentzos Roussos #:

Cant reproduce the issue , a code example would help.

//+------------------------------------------------------------------+
//|                                                da_cancellare.mq4 |
//|                                  Copyright 2023, MetaQuotes Ltd. |
//|                                             https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2023, MetaQuotes Ltd."
#property link      "https://www.mql5.com"
#property version   "1.00"
#property strict
#property indicator_chart_window
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit()
  {
//--- indicator buffers mapping
       double valore1 = 1.1234500000;
    double valore2 = 45612.000000;

    double risultato1 = ArrotondaDinamicamente(valore1);
    double risultato2 = ArrotondaDinamicamente(valore2);

    Print("Risultato 1: ", DoubleToStr(risultato1,5)); // Stampa 1.12345
    Print("Risultato 2: ", DoubleToStr(risultato2,5)); // Stampa 45612.3
//---
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int OnCalculate(const int rates_total,
                const int prev_calculated,
                const datetime &time[],
                const double &open[],
                const double &high[],
                const double &low[],
                const double &close[],
                const long &tick_volume[],
                const long &volume[],
                const int &spread[])
  {
//---
   
//--- return value of prev_calculated for next call
   return(rates_total);
  }
  
  
//+------------------------------------------------------------------+
double ArrotondaDinamicamente(double valore) {
    string valoreStringa = DoubleToString(valore, 15); // Converte il valore in una stringa con 15 cifre decimali massime
    int lunghezzaStringa = StringLen(valoreStringa); // Calcola la lunghezza della stringa
    int cifreDecimali = 0;

    // Conta il numero di cifre decimali alla fine della stringa
    for (int i = lunghezzaStringa - 1; i >= 0; i--) {
        if (StringGetCharacter(valoreStringa, i) != '0' && StringGetCharacter(valoreStringa, i) != '.') {
            cifreDecimali = lunghezzaStringa - i - 1;
            break;
        }
    }

    return NormalizeDouble(valore, cifreDecimali);
}
 
faustf #:

You should start counting the decimals after the "." appears

 
Lorentzos Roussos #:

You should start counting the decimals after the "." appears

not  exiast a  library or similar  just cooked ?
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