Error Description
Info
The Error Description is a Library for MetaTrader 5 that the code is based on the library, which contains the errordescription() function with two input parameters: error_code and the optional parameter txt_prefix. GetLastError() return codes can be found here, and OrderSend() function's retcode field values can be found here.
Usage
This tool is typically used for enhancing chart analysis and decision making.
Platform
This Library works exclusively on MetaTrader 5 (both build 600+ and newer versions).
Setup
Place the downloaded file in MQL5/Libraries folder via File ? Open Data Folder in MetaTrader 5.
How to Install and Use Error Description
1. Storage: Place library files in the MQL/Libraries directory to ensure they are accessible to your projects.
2. Implementation: Include the library in your code using the #import directive, ensuring you match the exact function names and parameters.
3. Compilation: Ensure the library is present in the directory before you compile your main EA or script, as the compiler links them during this phase.
4. Management: Keep libraries organized in sub-folders if you manage many custom functions to maintain a clean project structure.
Frequently Asked Questions
Q: What is a library file used for? A: Libraries store reusable code modules, allowing you to centralize common logic used by multiple EAs or indicators.
Q: Is a library executable? A: No, libraries are non-executable files containing functions; they must be imported into an EA, indicator, or script to function.
Q: Can I update a library while the platform is running? A: You should compile your EA or script after updating a library to ensure the latest code changes are integrated.
What this tool does
The code is based on the library, which contains the errordescription() function with two input parameters: error_code and the optional parameter txt_prefix.
Typical Use Case
This Library excels in automated trading and technical analysis on MetaTrader 5.
Compatible Platform & Setup
This Library works on MetaTrader 5. Place the file in the MQL5/Libraries folder and restart the terminal.
Description & Settings
Related: error description library for metatrader 4/5 - another powerful library for MetaTrader 5 traders.
The code is based on the library, which contains the errordescription() function with two input parameters: error_code and the optional parameter txt_prefix.Also recommended: Result Retcode Description - similar library with strong performance on MetaTrader 5.
GetLastError() return codes can be found here, and OrderSend() function's retcode field values can be found here. Both tables are included in the errordescription() function.
The LibraryTest.mq5 script can be used to check the description of a known error code. Execute the script with an input error_value set to the error code, and it will print the description. If error_value is set to -1, the script will print all available error codes.
You may also like: mq l plus enhanced error handler support - excellent alternative for library users on MetaTrader 5.
Source Code
#property copyright "robotfx"
#property version "1.00"
#property script_show_inputs
#include <errordesc.mqh>
#property description "this code is educational. feel free to use, modify and upgrade as you wish. visit robotfx.org for professional trading tools"
#property description "this code is educational. feel free to use, modify and upgrade as you wish. visit robotfx.org for professional trading tools"
#property description "this code is educational. feel free to use, modify and upgrade as you wish. visit robotfx.org for professional trading tools"
input int error_value = -1;
void onstart()
{.......
⚠ 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.