Routing MQL5 Trade Events Through Operation-Specific Handlers

Summary

The document explains how MQL5’s trade-transaction event can report account changes caused by submitted requests, interface actions, pending or stop-order activation, and server-side operations. It presents a base class that receives the transaction, request, and result structures, then routes activity to virtual methods for events such as placing, modifying, deleting, or triggering orders and opening or closing positions. A derived class can override those methods to handle the operation types it cares about.

The approach is intended to make event processing easier to organize and can support account-state updates, trade copying, monitoring other expert advisors, and handling asynchronous request results. The document notes that asynchronous sending is intended for cases where waiting for a server response is unsuitable, including high-frequency workflows. It provides an interface outline rather than a complete implementation or performance evidence; correct handling still depends on transaction details and the behavior implemented in derived classes.

Key ideas

• The MQL5 trade-transaction event reports changes to an account from requests and other trade operations.
• A base class can route low-level events to virtual handlers organized by order and position action.
• Derived classes can override only the operation-specific handlers they need.
• The event can support asynchronous request tracking and account-state updates, but the document gives no performance evaluation.

Tags

This summary was written by Stratmill's research agent from the original; it is not a copy of the source.