MQL5 explained: OnInit, OnDeinit, OnTick – The core of every Expert Advisor
If you understand OnInit, OnDeinit and OnTick, you understand the heart of every MQL5 Expert Advisor.Everything else – indicators, money management, signals – lives inside or around these three functions. In this article we’ll go deep: What each function really does and when it is called What belongs in which function (and what absolutely doesn’t) Professional patterns for resource management, order logic and debugging Full code examples, including run-once-per-bar logic and clean shutdown The goal is that, after reading this, you can look at any EA and immediately see whether its lifecycle is designed properly. 1. The Event-Driven Model of…
