Any questions from newcomers on MQL4 and MQL5, help and discussion on algorithms and codes - page 1196

[awsomdino2]

@Oleg

Ask the developers to put the error number as in the Documentation, it is not clear why it is in the Documentation and not used in the Editor in the Description

https://www.mql5.com/ru/docs/constants/errorswarnings/errorscompile

[edelweiss7]

Alexandr Sokolov:

simply specify the buffer index to be assigned during initialisation in SetIndexBufer

I'm not good at programming, there is no buffer in the code of the indicator through which it outputs data

[Alexandr Sokolov]

edelweiss7:

I am not good at programming, in the code of the indicator there is no buffer through which it outputs data

I haven't dug deep into your code, but I understand it draws levels

... you need the OnChartEvent handler

https://www.mql5.com/ru/docs/event_handlers/onchartevent

monitor the creation of new objects (it'sCHARTEVENT_OBJECT_CREATE), and if the name prefix is from your indicator - take the properties of the created line (there the price and time of its points)

[edelweiss7]

Alexandr Sokolov:

I didn't go into your code in depth, but I understand it draws levels

... you need an OnChartEvent handler

https://www.mql5.com/ru/docs/event_handlers/onchartevent

monitor the creation of new objects (it'sCHARTEVENT_OBJECT_CREATE), and if the name prefix is from your indicator - take the properties of the created line (price and time of its points there)

How to implement this in an EA

[selivan]

Please help me to correct an error that appears in my log:

MQL4 Market: failed to load products (get header failed [12150])

[Yevhenii Levchenko]

The handler (mt5, indictaor) handles button presses repeatedly. What could be the reason for this?

[Alexandr Sokolov]

Yevhenii Levchenko:
The handler (mt5, indictaor) handles button presses repeatedly. What can be the reason for this?

redraw - ChartRedraw()

[Igor Makanu]

Yevhenii Levchenko:
The event handler (mt5, indictaor) handles button presses sometimes. What can be the reason?

without a sample diagram of how you process events is just guessing

Alternatively, run it in the Indicators folder Examle\SimplePanel

and if this code works correctly ... guess for yourself ;)

[Maxim Kuznetsov]

Yevhenii Levchenko:
The handler (mt5, indictaor) handles the button presses in a time interval. What could be the reason for this?

just did the same bug this morning :-)

The button is adapted to work in the tester and works by polling, not completely in the OnChartEvent.

The error was in the check type

if (ObjectGetInteger(....,OBJPROP_STATE)!=state /* это баг, должен быть 0 */) {

    // состояние поменялось

    state=!state;

}

[kopeyka2]

Good morning.

The point is that the last 50 candles are calculated for the average.

Question. What to add, fix in the code to calculate once and not every tick. The problem is that in ON-LINE there is an accumulation of value.

for(int j=rates_total-50-1; j<rates_total-1; j++)
     {
      if(open[j]>close[j])
         candleOC+=open[j]-close[j];
      if(close[j]>open[j])
         candleOC+=close[j]-open[j];
      candleHL+=high[j]-low[j];
      bar+=1;
     }
   if(bar>0)
     {
      filterOC=candleOC/bar;
      filterOC=NormalizeDouble(filterOC,_Digits);
      filterHL=candleHL/bar;
      filterHL=NormalizeDouble(filterHL,_Digits);
     }
//filterHL=0.00500;  //пример среднего значения HL
//filterOC=0.00250;  //пример среднего значения OC