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Why did you post your MT4 question in the
Root /
MT5 General section
instead of the
MQL4 section, (bottom of the Root page?)
General rules and best pratices of the Forum. - General - MQL5 programming forum
Next time post in the correct place. The moderators will likely move this thread there soon. - It becomes zero whenever it is necessary to recalculate all bars, likely #6 or #7.Don't try to use any price or server related functions in OnInit (or on load,) as there may be no connection/chart yet:
- Terminal starts.
- Indicators/EAs are loaded. Static and globally declared variables are initialized. (Do not depend on a specific order.)
- OnInit is called.
- For indicators OnCalculate is called with any existing history.
- Human may have to enter password, connection to server begins.
- New history is received, OnCalculate called again.
- New tick is received, OnCalculate/OnTick is called. Now TickValue, TimeCurrent and prices are valid.
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According to MT4 description, prev_calculated should be the same as rates_total after the first run of indicator.
However, I found that prev_calculated becomes 0 again in the forth tick, and then all rest are same as rates_total.
Why this happens? Is it expected to be the same as rates_total after the first run??