MQL5 Programming Articles

Study the MQL5 language for programming trading strategies in numerous published articles mostly written by you - the community members. The articles are grouped into categories to help you quicker find answers to any questions related to programming: Integration, Tester, Trading Strategies, etc.

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Writing an Expert Advisor Using the MQL5 Object-Oriented Programming Approach

This article focuses on the object oriented approach to doing what we did in the article "Step-By-Step Guide to writing an Expert Advisor in MQL5 for Beginners" - creating a simple Expert Advisor....

Functions for Money Management in an Expert Advisor

The development of trading strategies primarily focuses on searching for patterns for entering and exiting the market, as well as maintaining positions. If we are able to formalize some patterns into...

Creating an Expert Advisor, which Trades on a Number of Instruments

The concept of diversification of assets on financial markets is quiet old, and has always attracted beginner traders. In this article, the author proposes a maximally simple approach to a...

Creating an Information Board Using the Standard Library Classes and Google Chart API

The MQL5 programming language primarily targets the creation of automated trading systems and complex instruments of technical analyses. But aside from this, it allows us to create interesting...

Genetic Algorithms - It's Easy!

In this article the author talks about evolutionary calculations with the use of a personally developed genetic algorithm. He demonstrates the functioning of the algorithm, using examples, and...

A DLL-free solution to communicate between MetaTrader 5 terminals using Named Pipes

The article describes how to implement Interprocess Communication between MetaTrader 5 client terminals using named pipes. For the use of the named pipes, the CNamedPipes class is developed. For the...

Guide to writing a DLL for MQL5 in Delphi

The article examines the mechanism of creating a DLL module, using the popular programming language of ObjectPascal, within a Delphi programming environment. The materials, provided in this article,...

An Example of a Trading System Based on a Heiken-Ashi Indicator

In this article we look into the question of using a Heiken-Ashi indicator in trading. Based on this indicator, a simple trading system is considered and an MQL5 Expert Advisor is written. Trading...

Using WinInet.dll for Data Exchange between Terminals via the Internet

This article describes the principles of working with the Internet via the use of HTTP requests, and data exchange between terminals, using an intermediate server. An MqlNet library class is presented...

Creating a Multi-Currency Indicator, Using a Number of Intermediate Indicator Buffers

There has been a recent rise of interest in the cluster analyses of the FOREX market. MQL5 opens up new possibilities of researching the trends of the movement of currency pairs. A key feature of MQL5...

Step-By-Step Guide to writing an Expert Advisor in MQL5 for Beginners

The Expert Advisors programming in MQL5 is simple, and you can learn it easy. In this step by step guide, you will see the basic steps required in writing a simple Expert Advisor based on a developed...

An Example of a Trading Strategy Based on Timezone Differences on Different Continents

Surfing the Internet, it is easy to find many strategies, which will give you a number of various recommendations. Let’s take an insider’s approach and look into the process of strategy creation,...

Connection of Expert Advisor with ICQ in MQL5

This article describes the method of information exchange between the Expert Advisor and ICQ users, several examples are presented. The provided material will be interesting for those, who wish to...

New Opportunities with MetaTrader 5

MetaTrader 4 gained its popularity with traders from all over the world, and it seemed like nothing more could be wished for. With its high processing speed, stability, wide array of possibilities for...

The Algorithm of Ticks' Generation within the Strategy Tester of the MetaTrader 5 Terminal

MetaTrader 5 allows us to simulate automatic trading, within an embedded strategy tester, by using Expert Advisors and the MQL5 language. This type of simulation is called testing of Expert Advisors,...

OOP in MQL5 by Example: Processing Warning and Error Codes

The article describes an example of creating a class for working with the trade server return codes and all the errors that occur during the MQL-program run. Read the article, and you will learn how...

MQL for "Dummies": How to Design and Construct Object Classes

By creating a sample program of visual design, we demonstrate how to design and construct classes in MQL5. The article is written for beginner programmers, who are working on MT5 applications. We...

Creating Active Control Panels in MQL5 for Trading

The article covers the problem of development of active control panels in MQL5. Interface elements are managed by the event handling mechanism. Besides, the option of a flexible setup of control...

Practical Application Of Databases For Markets Analysis

Working with data has become the main task for modern software - both for standalone and network applications. To solve this problem a specialized software were created. These are Database Management...

Migrating from MQL4 to MQL5

This article is a quick guide to MQL4 language functions, it will help you to migrate your programs from MQL4 to MQL5. For each MQL4 function (except trading functions) the description and MQL5...

A Virtual Order Manager to track orders within the position-centric MetaTrader 5 environment

This class library can be added to an MetaTrader 5 Expert Advisor to enable it to be written with an order-centric approach broadly similar to MetaTrader 4, in comparison to the position-based...

Creating an Indicator with Graphical Control Options

Those who are familiar with market sentiments, know the MACD indicator (its full name is Moving Average Convergence/Divergence) - the powerful tool for analyzing the price movement, used by traders...

MetaTrader 5: Publishing trading forecasts and live trading statements via e-mail on blogs, social networks and dedicated websites

This article aims to present ready-made solutions for publishing forecasts using MetaTrader 5. It covers a range of ideas: from using dedicated websites for publishing MetaTrader statements, through...

Creating a "Snake" Game in MQL5

This article describes an example of "Snake" game programming. In MQL5, the game programming became possible primarily due to event handling features. The object-oriented programming greatly...

Creating Tick Indicators in MQL5

In this article, we will consider the creation of two indicators: the tick indicator, which plots the tick chart of the price and tick candle indicator, which plot candles with the specified number of...

Using the Object Pointers in MQL5

By default, all objects in MQL5 are passed by reference, but there is a possibility to use the object pointers. However it's necessary to perform the pointer checking, because the object may be not...

MQL5: Analysis and Processing of Commodity Futures Trading Commission (CFTC) Reports in MetaTrader 5

In this article, we will develop a tool for CFTC report analysis. We will solve the following problem: to develop an indicator, that allows using the CFTC report data directly from the data files...

Introduction to MQL5: How to write simple Expert Advisor and Custom Indicator

MetaQuotes Programming Language 5 (MQL5), included in MetaTrader 5 Client Terminal, has many new possibilities and higher performance, compared to MQL4. This article will help you to get acquainted...

Drawing Indicator's Emissions in MQL5

In this article, we will consider the emission of indicators - a new approach to the market research. The calculation of emission is based on the intersection of different indicators: more and more...

The Drawing Styles in MQL5

There are 6 drawing styles in MQL4 and 18 drawing styles in MQL5. Therefore, it may be worth writing an article to introduce MQL5's drawing styles. In this article, we will consider the details of...

Practical Implementation of Digital Filters in MQL5 for Beginners

The idea of digital signal filtering has been widely discussed on forum topics about building trading systems. And it would be imprudent not to create a standard code of digital filters in MQL5. In...

MQL5 for Newbies: Guide to Using Technical Indicators in Expert Advisors

In order to obtain values of a built-in or custom indicator in an Expert Advisor, first its handle should be created using the corresponding function. Examples in the article show how to use this or...

Event handling in MQL5: Changing MA period on-the-fly

Suppose that simple MA (Moving Average) indicator with period 13 is applied to a chart. And we want to change the period to 20, but we do not want to go to indicator properties dialog box and edit the...

How to call indicators in MQL5

With new version of MQL programming language available not only the approach of dealing with indicators have changed, but there are also new ways of how to create indicators. Furthermore, you have...

Custom Indicators in MQL5 for Newbies

Any new subject seems complicated and hard-to-learn for a newbie. Subjects that we know seem very simple and clear to us. But we simply do not remember, that everyone has to study something from...

The Order of Object Creation and Destruction in MQL5

Every object, whether it is a custom object, a dynamic array or an array of objects, is created and deleted in MQL5-program in its particular way. Often, some objects are part of other objects, and...

MQL5.community - User Memo

You have just registered and most likely you have questions such as, "How do I insert a picture to my a message?" "How do I format my MQL5 source code?" "Where are my personal messages kept?" You may...

How to Export Quotes from МetaTrader 5 to .NET Applications Using WCF Services

Want to organize export of quotes from MetaTrader 5 to your own application? The MQL5-DLL junction allows to create such solutions! This article will show you one of the ways to export quotes from...

Applying One Indicator to Another

When writing an indicator that uses the short form of the OnCalculate() function call, you might miss the fact that an indicator can be calculated not only by price data, but also by data of some...

The Price Histogram (Market Profile) and its implementation in MQL5

The Market Profile was developed by trully brilliant thinker Peter Steidlmayer. He suggested to use the alternative representation of information about "horizontal" and "vertical" market movements...