MetaTrader Execution Flow Decoded From Tick to Trade When a new price tick arrives, MetaTrader first updates the internal price buffer, then

MetaTrader Execution Flow Decoded From Tick to Trade When a new price tick arrives, MetaTrader first updates the internal price buffer, then triggers any attached chart objects and indicators. Only after the indicator buffers have been refreshed does the platform evaluate Expert Advisors (EAs) that are subscribed to those signals. If an EA decides to act, the order is handed to the broker’s gateway, where latency, spread, and slippage are finally applied. Understanding this sequence lets you place custom logic at the right point – typically within the OnCalculate() routine of an indicator or the OnTick() event of an EA...