MQL5 Programming Articles

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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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Trading signals module using the system by Bill Williams

The article describes the rules of the trading system by Bill Williams, the procedure of application for a developed MQL5 module to search and mark patterns of this system on the chart, automated

Graphical Interfaces I: Functions for the Form Buttons and Deleting Interface Elements (Chapter 4)

In this article, we are going to continue developing the CWindow class by adding methods, which will allow managing the form by clicking on its controls. We will enable the program to be closed by a

Studying the CCanvas Class. Anti-aliasing and Shadows

An anti-aliasing algorithm of the CCanvas class is the base for all constructions where anti-aliasing is being used. The article contains information about how this algorithm operates, and provides

Graphical Interfaces I: Animating the Graphical Interface (Chapter 3)

In the previous article, we started developing a form class for controls. In this article, we are going to continue doing that by filling this class with methods for moving a form over the chart area

Rope Indicator by Erik Nayman

The article reveals how the "Rope" indicator is created based on "The Small Encyclopedia of Trader" by Erik L. Nayman. This indicator shows the direction of the trend using the calculated values of

Graphical Interfaces I: Form for Controls (Chapter 2)

In this article we will create the first and main element of the graphical interface - a form for controls. Multiple controls can be attached to this form anywhere and in any combination

Graphical Interfaces I: Preparation of the Library Structure (Chapter 1)

This article is the beginning of another series concerning development of graphical interfaces. Currently, there is not a single code library that would allow quick and easy creation of high quality

Market Theory

A logically complete market theory that would cover all types and varieties of markets for goods and services, micro and macro markets like Forex, hasn't been available until now. This article covers

MQL5 for beginners: Anti-vandal protection of graphic objects

What should your program do, if graphic control panels have been removed or modified by someone else? In this article we will show you how not to have "ownerless" objects on the chart, and how not to

Using Assertions in MQL5 Programs

This article covers the use of assertions in MQL5 language. It provides two examples of the assertion mechanism and some general guidance for implementing assertions

Error Handling and Logging in MQL5

This article focuses on general issues linked to handling software errors. Furthermore, the logging term is brought up and the examples of logging implementation with MQL5 tools are shown

Evaluation and selection of variables for machine learning models

This article focuses on specifics of choice, preconditioning and evaluation of the input variables (predictors) for use in machine learning models. New approaches and opportunities of deep predictor

Handling ZIP Archives in Pure MQL5

The MQL5 language keeps evolving, and its new features for working with data are constantly being added. Due to innovation it has recently become possible to operate with ZIP archives using regular

Indicator for Spindles Charting

The article regards spindle chart plotting and its usage in trading strategies and experts. First let's discuss the chart's appearance, plotting and connection with japanese candlestick chart. Next we

MQL5 Cookbook: Implementing Your Own Depth of Market

This article demonstrates how to utilize Depth of Market (DOM) programmatically and describes the operation principle of CMarketBook class, that can expand the Standard Library of MQL5 classes and

How to Secure Your Expert Advisor While Trading on the Moscow Exchange

The article delves into the trading methods ensuring the security of trading operations at the stock and low-liquidity markets through the example of Moscow Exchange's Derivatives Market. It brings

Drawing Resistance and Support Levels Using MQL5

This article describes a method of finding four extremum points for drawing support and resistance levels based on them. In order to find extremums on a chart of a currency pair, RSI indicator is

An Introduction to Fuzzy Logic

Fuzzy logic expands our boundaries of mathematical logic and set theory. This article reveals the basic principles of fuzzy logic as well as describes two fuzzy inference systems using Mamdani-type

Using Layouts and Containers for GUI Controls: The CGrid Class

This article presents an alternative method of GUI creation based on layouts and containers, using one layout manager — the CGrid class. The CGrid class is an auxiliary control that acts as a

Drawing Dial Gauges Using the CCanvas Class

We can find dial gauges in cars and airplanes, in industrial production and everyday life. They are used in all spheres which require quick response to behavior of a controlled value. This article

Using Layouts and Containers for GUI Controls: The CBox Class

This article presents an alternative method of GUI creation based on layouts and containers, using one layout manager — the CBox class. The CBox class is an auxiliary control that acts as a container

Tips for Selecting a Trading Signal to Subscribe. Step-By-Step Guide

This step-by-step guide is dedicated to the Signals service, examination of trading signals, a system approach to the search of a required signal which would satisfy criteria of profitability, risk

MQL5 Cookbook: Implementing an Associative Array or a Dictionary for Quick Data Access

This article describes a special algorithm allowing to gain access to elements by their unique keys. Any base data type can be used as a key. For example it may be represented as a string or an

Tips for Purchasing a Product on the Market. Step-By-Step Guide

This step-by-step guide provides tips and tricks for better understanding and searching for a required product. The article makes an attempt to puzzle out different methods of searching for an

Plotting trend lines based on fractals using MQL4 and MQL5

The article describes the automation of trend lines plotting based on the Fractals indicator using MQL4 and MQL5. The article structure provides a comparative view of the solution for two languages

Bi-Directional Trading and Hedging of Positions in MetaTrader 5 Using the HedgeTerminal API, Part 2

This article describes a new approach to hedging of positions and draws the line in the debates between users of MetaTrader 4 and MetaTrader 5 about this matter. It is a continuation of the first

Studying the CCanvas Class. How to Draw Transparent Objects

Do you need more than awkward graphics of moving averages? Do you want to draw something more beautiful than a simple filled rectangle in your terminal? Attractive graphics can be drawn in the

Optimization. A Few Simple Ideas

The optimization process can require significant resources of your computer or even of the MQL5 Cloud Network test agents. This article comprises some simple ideas that I use for work facilitation and

Bi-Directional Trading and Hedging of Positions in MetaTrader 5 Using the HedgeTerminal Panel, Part 1

This article describes a new approach to hedging of positions and draws the line in the debates between users of MetaTrader 4 and MetaTrader 5 about this matter. The algorithms making such hedging

Principles of Exchange Pricing through the Example of Moscow Exchange's Derivatives Market

This article describes the theory of exchange pricing and clearing specifics of Moscow Exchange's Derivatives Market. This is a comprehensive article for beginners who want to get their first exchange

MQL5 Cookbook: ОСО Orders

Any trader's trading activity involves various mechanisms and interrelationships including relations among orders. This article suggests a solution of OCO orders processing. Standard library classes

Building an Interactive Application to Display RSS Feeds in MetaTrader 5

In this article we look at the possibility of creating an application for the display of RSS feeds. The article will show how aspects of the Standard Library can be used to create interactive programs

Trader's Statistical Cookbook: Hypotheses

This article considers hypothesis - one of the basic ideas of mathematical statistics. Various hypotheses are examined and verified through examples using methods of mathematical statistics. The

Third Generation Neural Networks: Deep Networks

This article is dedicated to a new and perspective direction in machine learning - deep learning or, to be precise, deep neural networks. This is a brief review of second generation neural networks

Neural Networks Cheap and Cheerful - Link NeuroPro with MetaTrader 5

If specific neural network programs for trading seem expensive and complex or, on the contrary, too simple, try NeuroPro. It is free and contains the optimal set of functionalities for amateurs. This

Programming EA's Modes Using Object-Oriented Approach

This article explains the idea of multi-mode trading robot programming in MQL5. Every mode is implemented with the object-oriented approach. Instances of both mode classes hierarchy and classes for

Random Forests Predict Trends

This article considers using the Rattle package for automatic search of patterns for predicting long and short positions of currency pairs on Forex. This article can be useful both for novice and

MQL5 Wizard: Placing Orders, Stop-Losses and Take Profits on Calculated Prices. Standard Library Extension

This article describes the MQL5 Standard Library extension, which allows to create Expert Advisors, place orders, Stop Losses and Take Profits using the MQL5 Wizard by the prices received from

Liquid Chart

Would you like to see an hourly chart with bars opening from the second and the fifth minute of the hour? What does a redrawn chart look like when the opening time of bars is changing every minute

MQL5 Programming Basics: Global Variables of the Terminal

This article highlights object-oriented capabilities of the MQL5 language for creating objects facilitating work with global variables of the terminal. As a practical example I consider a case when