Log4mql - library MetaTrader 4

Log4mql is an MQL4 (MetaQuotes MetaTrader 4 Language) library for flexible logging to files and the terminal console. It is modeled after the Log4j Java library. Documentation (GitHub):  Usage in your Code: CLog4mql::getInstance().error(__FILE__, __LINE__,...

from https://tradingrobots.net/log4mql-library-for-metatrader-4/