Logging library for mql4
Info
The Logging library for mql4 is a Library for MetaTrader 4 that this is a logging library to quickly add logging capabilities to your code without much hassle. The library's default behavior matches most cases however most of the functionality can be customized using pre-processor substitutions (#define)See the example scripts on how to use library.
Usage
This tool is typically used for enhancing chart analysis and decision making.
Platform
This Library works exclusively on MetaTrader 4 (both build 600+ and newer versions).
Setup
Place the downloaded file in MQL4/Libraries folder via File ? Open Data Folder in MetaTrader 4.
How to Install and Use Logging library for mql4
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
This is a logging library to quickly add logging capabilities to your code without much hassle.
Typical Use Case
This Library excels in automated trading and technical analysis on MetaTrader 4.
Compatible Platform & Setup
This Library works on MetaTrader 4. Place the file in the MQL4/Libraries folder and restart the terminal.
Description & Settings
Related: ALG L I B - Numerical Analysis Library - another powerful library for MetaTrader 4 traders.
This is a logging library to quickly add logging capabilities to your code without much hassle. The library's default behavior matches most cases however most of the functionality can be customized using pre-processor substitutions (#define)
Also recommended: Simple Unit Test include library for new MQ L4 - similar library with strong performance on MetaTrader 4.
See the example scripts on how to use library.How to use
Customization notes
The logger uses following format to print logs sample output: 2021.06.08 17:35:34 | Error | OnStart | This is a test error | invalid function parameter value
Use following logging functions/digits to assign them to logging levels. define as 0 if the level needs to be disabled
example:
Customize the prefix section as follows an example prefix output will be : with_customization.mq4 | Line:36
Customize file name by a string constant or a function call
Notes:
#define before the Logger.mqh is included.
To disable a logger level set the level as zero.
LOGGER_NOTIFY and LOGGER_FILE execution errors are handled as a print statements. Do not customize it to use library's own error handling, the program might trigger an infinite loop or a stack overflow.
You may also like: Script Calling Library for MT4 build 600 and later - excellent alternative for library users on MetaTrader 4.
⚠ 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.