how to differentiate "OnInit()" caused by timeframe change from "Indicator Attached" ?

[Arman]

I have a certain block of code in OnInit() function which I only want to execute once everytime the indicator is attached to the chart,

but I dont want it to be executed when the timeframe is changed , so it there a way to accomplish this ?

[William Roeder]

1. The indicator is removed and reloaded on TF change.

2. Perhaps you should read the manual. UninitializeReason
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[lippmaje]

Remember the uninit reason in a global variable and query it during OnInit().

https://docs.mql4.com/basis/function/events#ondeinit

https://docs.mql4.com/constants/namedconstants/uninit