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Articles with examples of trading robot developed in MQL4

An Expert Advisor is the 'pinnacle' of programming and the desired goal of every automated trading developer. Read the articles in this section to create your own trading robot. By following the described steps you will learn how to create, debug and test automated trading systems.

The articles not only teach MQL5 programming, but also show how to implement trading ideas and techniques. You will learn how to program a trailing stop, how to apply money management, how to get the indicator values, and much more.

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Applying fuzzy logic in trading by means of MQL4

The article deals with examples of applying fuzzy set theory in trading by means of MQL4. The use of FuzzyNet library for MQL4 in the development of an indicator and an Expert Advisor is described as...

Enhancing the StrategyTester to Optimize Indicators Solely on the Example of Flat and Trend Markets

It is essential to detect whether a market is flat or not for many strategies. Using the well known ADX we demonstrate how we can use the Strategy Tester not only to optimize this indicator for our...

Price Action. Automating the Engulfing Pattern Trading Strategy

This article describes a process of creating an Expert Advisor for MetaTrader 4 based on the Engulfing pattern, as well as the pattern recognition principle, rules of setting pending orders and stop...

Price Action. Automating the Inside Bar Trading Strategy

The article describes the development of a MetaTrader 4 Expert Advisor based on the Inside Bar strategy, including Inside Bar detection principles, as well as pending and stop order setting rules....

Common Errors in MQL4 Programs and How to Avoid Them

To avoid critical completion of programs, the previous version compiler handled many errors in the runtime environment. For example, division by zero or array out of range are critical errors and...

Mechanical Trading System "Chuvashov's Triangle"

Let me offer you an overview and the program code of the mechanical trading system based on ideas of Stanislav Chuvashov. Triangle's construction is based on the intersection of two trend lines built...

MetaTrader 4 Expert Advisor exchanges information with the outside world

A simple, universal and reliable solution of information exchange between МetaТrader 4 Expert Advisor and the outside world. Suppliers and consumers of the information can be located on different...

Contest of Expert Advisors inside an Expert Advisor

Using virtual trading, you can create an adaptive Expert Advisor, which will turn on and off trades at the real market. Combine several strategies in a single Expert Advisor! Your multisystem Expert...

Research of Statistical Recurrences of Candle Directions

Is it possible to predict the behavior of the market for a short upcoming interval of time, based on the recurring tendencies of candle directions, at specific times throughout the day? That is, If...

Expert System 'Commentator'. Practical Use of Embedded Indicators in an MQL4 Program

The article describes the use of technical indicators in programming on MQL4.

Events in МetaТrader 4

The article deals with programmed tracking of events in the МetaТrader 4 Client Terminal, such as opening/closing/modifying orders, and is targeted at a user who has basic skills in working with the...

Graphic Expert Advisor: AutoGraf

The article shows the workability of graphics in creation of a convenient interface to manage trading.

Orders Management - It's Simple

The article deals with various ways of how to control open positions and pending orders. It is devoted to simplifying of writing Expert Advisors.

Considering Orders in a Large Program

General principles of considering orders in a large and complex program are discussed.

Working with Files. An Example of Important Market Events Visualization

The article deals with the outlook of using MQL4 for more productive work at FOREX markets.

Error 146 ("Trade context busy") and How to Deal with It

The article deals with conflict-free trading of several experts on one МТ 4 Client Terminal. It will be useful for those who have basic command of working with the terminal and programming in MQL 4.

Expert Advisor Sample

The principles of MQL4-programs development are shown on sample of creating a simple Expert Advisor system based on the standard MACD indicator.

Testing Features and Limits in MetaTrader 4

This article allows to find out more about features and limits of Strategy Tester in MetaTrader 4.

Features of Experts Advisors

Creation of expert advisors in the MetaTrader trading system has a number of features.