Expert Advisors are stored in terminal_directory\MQL4\Experts. An Expert Advisor starts to run when an event happens that can be handled by it: events of initialization and deinitialization, event of a new tick receipt, a timer event, depth of market changing event, chart event and custom events.Īn Expert Advisor can both inform you about a possibility to trade and automatically trade on an account sending orders directly to a trade server. Expert Advisor is a mechanical trading system linked up to a certain chart.Programs written in MetaQuotes Language 4 have different features and purposes: The brief guide contains functions, operations, reserved words, and other language constructions divided into categories, and allows finding the description of every used element of the language. It helps users to orientate themselves in the expert system text quite easily. The MetaEditor (text editor) that highlights different constructions of MQL4 language is used for writing the program code. MQL4 contains a large number of functions necessary for analyzing current and previously received quotes, and has built-in basic indicators and functions for managing trade orders and controlling them. Besides, using MQL4 you can create your own technical indicators (custom indicators), scripts and libraries. Using this language, you can create your own Expert Advisors that make trading management automated and are perfectly suitable for implementing your own trading strategies. based on their long experience in the creation of online trading platforms.
This language is developed by MetaQuotes Software Corp. MetaQuotes Language 4 (MQL4) is a built-in language for programming trading strategies.
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