Discussing the article: "Price Action Analysis Toolkit Development (Part 64): Synchronizing Manually Drawn Trendlines with Automated Monitoring"
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Check out the new article: Price Action Analysis Toolkit Development (Part 64): Synchronizing Manually Drawn Trendlines with Automated Monitoring.
Monitoring manually drawn trendlines requires constant chart observation, which can cause important price interactions to be missed. This article develops a trendline monitoring Expert Advisor that synchronizes manually drawn trendlines with automated monitoring logic in MQL5, generating alerts when price approaches, touches, or breaks a monitored line.
You already draw trendlines manually and trust your visual judgment more than fully automated detection. The practical problem is different: as you place more lines across one or several charts, you physically cannot watch every level all the time. Key moments—price approaching, touching, breaking, or rejecting a manually drawn trendline—often occur while you switch timeframes, step away from the terminal, or manage other positions. The article addresses this precise deficit: how to keep manual charting as your analytical input while automating the repetitive task of monitoring those lines.
Technically, the missing piece is the ability to “attach” a hand-drawn OBJ_TREND to the Expert Advisor's logic and lifecycle (creation, modification, deletion), compute its instantaneous price as time advances, and raise reliable notifications when predefined interaction conditions occur. The solution presented preserves discretionary drawing: you select and sync the lines you care about, and MetaTrader 5 (via an EA) continuously evaluates those synchronized lines and alerts you to meaningful events so you no longer need to stare at every chart.
The following sections explain the concept behind synchronizing manually drawn trendlines with automated monitoring, describe how the system is implemented in MQL5, and present the testing process used to verify its behavior in a live chart environment.
In earlier work within the Price Action Analysis Toolkit Development series, the automation of drawing and monitoring trendlines in MQL5 was introduced. In that approach, the program identifies potential pivot points and automatically constructs trendlines based on predefined rules. While this automation is useful for systematic analysis, many traders still prefer to draw trendlines manually.
Manual drawing allows the trader to apply discretion when selecting pivot points. Instead of relying solely on algorithmic detection, traders can visually interpret the chart and determine which swing highs and lows best represent the underlying market structure. This human judgment is particularly valuable when analyzing complex price formations where rigid rules may fail to capture subtle structural details.
Author: Christian Benjamin