Detecting the start of a new bar or candle
Fernando Carreiro, 2022.04.24 00:38
Detecting the start of a new bar or candle, in the OnTick() event handler of an expert advisor.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)
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)
thanks for answering
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Hi Guys,
I want to write a ea but when I put it in the chart,
it will wait until the current candle close,
(for example :
double Close[];
ArraySetAsSeries(Close,true);
Copyclose(_Symbol,_Period,0,10,Close); ),
which is when the tick of Close[0] close, then it became Close[1],
then it just start(I mean before my code start running, I need to write the code that wait until the current candle close, but I don't know how to write)
sorry for my broken english,
if u don't understand any part of it,
please ask me,
I will try my best to explain it.