Discussing the article: "Building an Object-Oriented FVG Scanner in MQL5"

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Check out the new article: Building an Object-Oriented FVG Scanner in MQL5.

Create an object-oriented fair value gap (FVG) scanner in MQL5 and display liquidity gaps directly on a MetaTrader 5 chart, this article formalizes the imbalance geometry based on three candlesticks, synchronizes OHLC arrays with CopyRates, manages rectangles without leaks, and monitors mitigation in real time. It also shows how to integrate this class into an Expert Advisor with a strict new bar filter for stable and efficient execution.

The transition from retail indicator-based trading to institutional algorithmic modeling requires a fundamental shift in how a developer interprets historical data. Traditional oscillators and moving averages use smoothing formulas. This introduces mathematical lag. Institutional algorithms operate on raw market microstructure. They analyze liquidity voids and structural imbalances created by high-frequency trading.

One of the most critical footprints of institutional order flow is the Fair Value Gap, commonly referred to as an FVG or a liquidity void. Automating the detection of these imbalances provides algorithmic systems with highly precise, unlagged zones of interest for entry and exit routing. This article describes how to build an object-oriented Fair Value Gap scanner in MQL5. We define the three-candle geometry, load data with CopyRates, manage chart objects safely, and add mitigation checks to detect when gaps are filled.

Author: Amanda Vitoria De Paula Pereira