Need some information here about chart.

[Manpreet Singh]

Hello, 

In below given link their is a link of code of time to open next candle, it is working on all charts and show time of the candle as per TF of current chart only.

https://www.mql5.com/pt/forum/310104

Can any expert coder please help me identify what changes it need, if we want to show all the TF candle time on each chart.

I mean if we want to see like this on each chart

M5 - 00:00:60

M15 - 00:05:60

H1 - 00:05:60

H4 - 02:05:60

[William Roeder]

You can't know when a candle closes. Only when a new tick arrives that starts a new bar is the old bar closed.

For a new bar test, Bars is unreliable (a refresh/reconnect can change number of bars on chart), volume is unreliable (miss ticks), Price is unreliable (duplicate prices and The == operand. - MQL4 programming forum.) Always use time.
          MT4: New candle - MQL4 programming forum #3 (2014)
          MT5: Accessing variables - MQL4 programming forum #3 (2022)

I disagree with making a new bar function, because it can only be called once per tick (second call returns false). A variable can be tested multiple times.
          Running EA once at the start of each bar - MQL4 programming forum (2011)

[Lorentzos Roussos]

Manpreet Singh:

Hello, 

In below given link their is a link of code of time to open next candle, it is working on all charts and show time of the candle as per TF of current chart only.

https://www.mql5.com/pt/forum/310104

Can any expert coder please help me identify what changes it need, if we want to show all the TF candle time on each chart.

I mean if we want to see like this on each chart

M5 - 00:00:60

M15 - 00:05:60

H1 - 00:05:60

H4 - 02:05:60

Hello . You can use the following , its not very commented out i can explain what's not clear. (tested on MT5) 

//+------------------------------------------------------------------+
//|                                       candle_times_countdown.mq5 |
//|                                  Copyright 2022, MetaQuotes Ltd. |
//|                                             https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2022, MetaQuotes Ltd."
#property link      "https://www.mql5.com"
#property version   "1.00"
//+------------------------------------------------------------------+
//| Expert initialization function                                   |
//+------------------------------------------------------------------+
/* the countdown string assembler
*/
string return_two_digits(int value){
if(value<10){return("0"+IntegerToString(value));}
return(IntegerToString(value));
}
string countdown_text(datetime next_bar,
                      datetime time_now){
//difference in seconds 
  int secs=(int)next_bar-(int)time_now;
//days
      //how many full days fit in the seconds difference 
  int days=(int)MathFloor(((double)secs)/86400);
  //remove the seconds of the full days from the seconds difference
  secs-=days*86400;
//hours
  int hours=(int)MathFloor(((double)secs)/3600);
  secs-=hours*3600;
//minutes
  int minutes=(int)MathFloor(((double)secs)/60);
  secs-=minutes*60;
//format 
  return("D:"+return_two_digits(days)+"|H:"+return_two_digits(hours)+"|M:"+return_two_digits(minutes)+"|S:"+return_two_digits(secs));
}
ENUM_TIMEFRAMES tfs[]={PERIOD_M1,PERIOD_M5,PERIOD_M15,PERIOD_M30,PERIOD_H1,PERIOD_H4,PERIOD_D1,PERIOD_W1,PERIOD_MN1};
string          tf_texts[]={"M1","M5","M15","M30","H1","H4","D1","W1","MN1"};
int OnInit()
  {
  while(!EventSetTimer(1)){
  Sleep(24);
  } 
  return(INIT_SUCCEEDED);
  }
  void OnTimer()
  {
//---
  string comm="";
  datetime now=0,server=TimeTradeServer();
  
  for(int i=0;i<ArraySize(tfs);i++){
    ResetLastError();
    now=iTime(_Symbol,tfs[i],0);
    if(GetLastError()==0&&(server-now)<=PeriodSeconds(tfs[i])){
    comm+=tf_texts[i]+":"+countdown_text((datetime)(now+PeriodSeconds(tfs[i])),TimeCurrent())+"\n";
    }  
  }
  Comment(comm);

  }
//+------------------------------------------------------------------+
//| Expert deinitialization function                                 |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
  {
  EventKillTimer();
  }
//+------------------------------------------------------------------+
//| Expert tick function                                             |
//+------------------------------------------------------------------+
void OnTick()
  {
//---
   
  }