TradeTransaction Class - MetaTrader 5 Library - MT4/MT5 Resources
When certain actions are performed on a trading account, its status changes. Such actions include:
A special OnTradeTransaction() handler is provided in MQL5 for applying trade transactions to an account.
Blank Online Transaction () constant MqlTrade transaction & trans, // trade transaction structure constant Mql trade request & request, // request structure constant Mql trade result & result // response structure );
The OnTradeTransaction() function can be used for:
The OrderSendAsync() function is designed for high-frequency trading, and according to the terms of the trading algorithm, wasting time waiting for a response from the server is unacceptable.
However, analyzing transactions using the default OnTradeTransaction() handler provided in MQL5 seems complicated.
The trade transaction class maps the underlying low-level trade transactions to custom handlers corresponding to the trade operation type.
This class has the following methods:
//+------------------------------------------------------------------+ //| CTradeTransaction class. | //|Purpose: The base class of trade transactions. | //+------------------------------------------------------------------+ Class CTrade Trading { People : CTrade transaction ( blank ) { } ~CTradeTransaction( blank ) { } //--- event handler blank OnlineTrade ( const MqlTrade transaction & trans, Constant Mql Transaction Requests & Requirements, Constant Mql transaction result &result); protected : //--- Trade Transaction //--- These methods should be overridden in derived classes. Virtual Blank Trade Order Placed ( Oolong Order) { } Virtual blank transaction order modification ( Oolong command) { } Virtual blank transaction order has been deleted ( Oolong order) { } Virtual blank transaction order has expired ( Oolong order) { } Virtual blank transaction order trigger ( Oolong order) { } Virtual blank trading position has been opened ( own position, own trade) { } Virtual blank trading position StopTake ( own position, own transaction) { } Virtual blank trading position has been closed ( own position, own trade) { } Virtual blank basis for closing trading positions ( own position, own transaction) { } Virtual blank trading position modification ( Oolong position) { } }; //+------------------------------------------------------------------+ //| TradeTransaction function | //+------------------------------------------------------------------+ blank Online Transaction ( constant MqlTrade Transactions & Trans, constant Mql transaction request & requirement, constant Mql trading results & results) { //--- CTradeTransaction ExtTransaction; //--- External affairs. Online transactions (transmissions, requests, results); } //+----
Finally, this article provides an in-depth discussion about trade transactions in MQL5. MQL5 Manual: Handling of TradeTransaction Events
https://www.mql5.com/en/articles/1111
2019.03.06 - v.1.00: Initial version.
2025.03.05 - v.1.10: Fixed issue with STOP LIMIT orders not being captured. Added 'SetLogging' public method to control printing of details to the 'expert' log.
Attachment download
📎 tradetransaction.mqh (20.43 KB)
📎 trademonitor_ea.mq5 (9.11 KB)
Source: MQL5 #24901
TradeTransaction Class - Important points before using the MetaTrader 5 library
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FAQ
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Usually cannot be used directly. EX4/MQ4 corresponds to MT4, EX5/MQ5 corresponds to MT5, and the source code needs to be compiled in the corresponding MetaEditor.
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