Trade Error Classifier and Recovery for MQL4
Info
The Trade Error Classifier and Recovery for MQL4 is a Expert Advisor for MetaTrader 4 that cerrorhandler is a comprehensive trade error classifier and automated recovery system for mql4 expert advisors. Features - Maps MQL4 trade server return codes to five recovery actions: IGNORE, RETRY, WAIT, STOP_EA, and ALARM.
Usage
This tool is typically used for automated trading on major forex pairs and gold.
Platform
This Expert Advisor works exclusively on MetaTrader 4 (both build 600+ and newer versions).
Setup
Place the downloaded file in MQL4/Experts folder via File ? Open Data Folder in MetaTrader 4.
How to Install and Use Trade Error Classifier and Recovery for MQL4
1. Installation: Open the "File" menu, select "Open Data Folder," navigate to MQL/Experts, paste your file, and restart the terminal.
2. Activation: Drag the EA from the Navigator onto a chart, ensure "Allow live trading" is checked in the Common tab, and verify the AutoTrading button is green.
3. Optimization: Right-click your chart, choose "Expert List," click "Properties" to adjust inputs, and save your preferred setup as a set file for future use.
4. Maintenance: Regularly check the "Experts" tab in the terminal window to monitor trade logs and potential execution errors.
Frequently Asked Questions
Q: Why is my EA not opening trades? A: Check the "AutoTrading" button, ensure "Allow live trading" is enabled, and verify your broker allows automated trading on your account type.
Q: Can I run multiple EAs on one chart? A: No, each chart can only host one active EA; however, you can open multiple charts for different currency pairs to run several EAs.
Q: What does the "smiley face" icon mean? A: A smiley face in the top-right corner of the chart indicates the EA is successfully running; a frowny face means it is disabled.
What this tool does
CErrorHandler is a comprehensive trade error classifier and automated recovery system for MQL4 Expert Advisors.
Typical Use Case
This Expert Advisor excels in automated trading and technical analysis on MetaTrader 4.
Compatible Platform & Setup
This Expert Advisor works on MetaTrader 4. Place the file in the MQL4/Experts folder and restart the terminal.
Description & Settings
Related: Manual Trade Pad for MetaTrader 4 - another powerful expert for MetaTrader 4 traders.
CErrorHandler is a comprehensive trade error classifier and automated recovery system for MQL4 Expert Advisors.Also recommended: Trade Manager MT4: Advanced Position Management for MetaTrader 4 - similar expert with strong performance on MetaTrader 4.
Features
- Maps MQL4 trade server return codes to five recovery actions: IGNORE, RETRY, WAIT, STOP_EA, and ALARM.
- Tracks repeated failures for each error code with adjustable escalation limits.
- Implements integer-based exponential back-off delays to prevent EA thread blocking and eliminate busy-loops.
- Provides built-in diagnostic hints for commonly misunderstood or mishandled error codes, such as ERR_INVALID_STOPS and ERR_TRADE_TOO_MANY_ORDERS.
Minimal Usage
#include "ErrorHandler.mqh"
CErrorHandler g_err("MyEA");
for(int attempt = 0; attempt < 10; attempt++)
{ ResetLastError(); int ticket = OrderSend(...); if(ticket >= 0) { g_err.ResetRetry(); break; } switch(g_err.Handle(GetLastError(), "OrderSend BUY")) { case EH_ACTION_RETRY: case EH_ACTION_WAIT: continue; case EH_ACTION_ALARM: continue; case EH_ACTION_STOP_EA: ExpertRemove(); return; case EH_ACTION_IGNORE: break; } }
You may also like: Quantora Trade Manager MT4: Advanced Position Management for MetaTrader 4 - excellent alternative for expert users on MetaTrader 4.
Source Code
#property copyright "RobotFX"
#property link "https://robotfx.org"
#property version "1.00"
#property strict
#include "ErrorHandler.mqh"
int OnInit() { return(INIT_SUCCEEDED); }
void OnDeinit(const int reason) {}
void OnTick() {}.......
⚠ Limitations & Risk Warning
- This tool is provided for educational and testing purposes only.
- Past performance does not guarantee future results.
- Trading involves substantial risk of loss. Use on a demo account first.
- Results may vary depending on market conditions, broker, and settings.
- We recommend thorough backtesting and forward testing before using with real funds.