Building a Visual Order Interface with MQL5 Chart Objects
Summary
This installment describes the early implementation of a visual order-management interface for a MetaTrader 5 Expert Advisor. The intended chart display includes controls and markers for order price, stop loss, take profit, and closing actions, with related elements kept together so a trader can position and understand orders visually. The author estimates that each order or position interface will require multiple chart objects, making object count and platform resource use part of the design.
The implementation builds reusable MQL5 classes for common chart-object behavior, including creation, positioning, coloring, and sizing. It uses inheritance for specialized background and trade-line objects, and chooses screen-based Cartesian coordinates over time-and-price placement because grouped interface elements need to stay aligned. The article is a partial development series: it lays out the framework and some positioning logic, but says substantial work remains before the complete order display is available. It explains interface engineering rather than a trading signal or evidence of strategy performance.
Key ideas
- A visual order interface can expose order levels and controls directly on the chart.
- The design represents each order or position with several coordinated chart objects, so resource needs should be considered.
- Reusable base classes centralize object creation, positioning, color, and size behavior.
- Inheritance lets specialized chart objects adjust their behavior while reusing shared functionality.
- Cartesian screen coordinates are selected to keep groups of interface elements aligned.
Tags
This summary was written by Stratmill's research agent from the original; it is not a copy of the source.