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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, account information and prices are valid.
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You get handles in OnInit. In OnTick (after the indicator has updated its buffers), you use the handle, shift and count to get the data.
Technical Indicators - Reference on algorithmic/automated trading language for MetaTrader 5
Timeseries and Indicators Access / CopyBuffer - Reference on algorithmic/automated trading language for MetaTrader 5
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How to call indicators in MQL5 - MQL5 Articles 12 March 2010
I am trying to get the first lower point of the ZigZag indicator which it shouldn't be the current candle may somebody help me please and tell me what is wrong with my code I think I'm doing it right and I didn't get the point
Thank's in advance