MQL4 and 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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Reversal patterns: Testing the Double top/bottom pattern

Traders often look for trend reversal points since the price has the greatest potential for movement at the very beginning of a newly formed trend. Consequently, various reversal patterns are...

Gap - a profitable strategy or 50/50?

The article dwells on gaps — significant differences between a close price of a previous timeframe and an open price of the next one, as well as on forecasting a daily bar direction. Applying the...

Using limit orders instead of Take Profit without changing the EA's original code

Using limit orders instead of conventional take profits has long been a topic of discussions on the forum. What is the advantage of this approach and how can it be implemented in your trading? In this...

Movement continuation model - searching on the chart and execution statistics

This article provides programmatic definition of one of the movement continuation models. The main idea is defining two waves — the main and the correction one. For extreme points, I apply fractals as...

EA remote control methods

The main advantage of trading robots lies in the ability to work 24 hours a day on a remote VPS server. But sometimes it is necessary to intervene in their work, while there may be no direct access to...

100 best optimization passes (part 1). Developing optimization analyzer

The article dwells on the development of an application for selecting the best optimization passes using several possible options. The application is able to sort out the optimization results by a...

Modeling time series using custom symbols according to specified distribution laws

The article provides an overview of the terminal's capabilities for creating and working with custom symbols, offers options for simulating a trading history using custom symbols, trend and various...

Reversing: The holy grail or a dangerous delusion?

In this article, we will study the reverse martingale technique and will try to understand whether it is worth using, as well as whether it can help improve your trading strategy. We will create an...

Using indicators for optimizing Expert Advisors in real time

Efficiency of any trading robot depends on the correct selection of its parameters (optimization). However, parameters that are considered optimal for one time interval may not retain their...

MQL5 Cookbook: Getting properties of an open hedge position

MetaTrader 5 is a multi-asset platform. Moreover, it supports different position management systems. Such opportunities provide significantly expanded options for the implementation and formalization...

Automated Optimization of an EA for MetaTrader 5

This article describes the implementation of a self-optimization mechanism under MetaTrader 5.

Elder-Ray (Bulls Power and Bears Power)

The article dwells on Elder-Ray trading system based on Bulls Power, Bears Power and Moving Average indicators (EMA — exponential averaging). This system was described by Alexander Elder in his book...

50,000 completed orders in the MQL5.com Freelance service

Members of the official MetaTrader Freelance service have completed more than 50,000 orders as at October 2018. This is the world's largest Freelance site for MQL programmers: more than a thousand...

Combining trend and flat strategies

There are numerous trading strategies out there. Some of them look for a trend, while others define ranges of price fluctuations to trade within them. Is it possible to combine these two approaches to...

Deep Neural Networks (Part VIII). Increasing the classification quality of bagging ensembles

The article considers three methods which can be used to increase the classification quality of bagging ensembles, and their efficiency is estimated. The effects of optimization of the ELM neural...

PairPlot graph based on CGraphic for analyzing correlations between data arrays (time series)

Comparing several time series during a technical analysis is a quite common task that requires appropriate tools. In this article, I suggest developing a tool for graphical analysis and detecting...

950 websites broadcast the Economic Calendar from MetaQuotes

The widget provides websites with a detailed release schedule of 500 indicators and indices, of the world's largest economies. Thus, traders quickly receive up-to-date information on all important...

Developing stock indicators featuring volume control through the example of the delta indicator

The article deals with the algorithm of developing stock indicators based on real volumes using the CopyTicks() and CopyTicksRange() functions. Some subtle aspects of developing such indicators, as...

Universal RSI indicator for working in two directions simultaneously

When developing trading algorithms, we often encounter a problem: how to determine where a trend/flat begins and ends? In this article, we try to create a universal indicator, in which we try to...

Custom presentation of trading history and creation of report diagrams

The article describes custom methods for assessing the trading history. Two classes have been written for downloading and analyzing history. The first of them collects the trading history and...

14,000 trading robots in the MetaTrader Market

The largest store of ready-made applications for algo-trading now features 13,970 products. This includes 4,800 robots, 6,500 indicators, 2,400 utilities and other solutions. Almost half of the...

Trading account monitoring is an indispensable trader's tool

Trading account monitoring provides a detailed report on all completed deals. All trading statistics are collected automatically and provided to you as easy-to-understand diagrams and graphs.

Expert Advisor featuring GUI: Adding functionality (part II)

This is the second part of the article showing the development of a multi-symbol signal Expert Advisor for manual trading. We have already created the graphical interface. It is now time to connect it...

Integrating MQL-based Expert Advisors and databases (SQL Server, .NET and C#)

The article describes how to add the ability to work with Microsoft SQL Server database server to MQL5-based Expert Advisors. Import of functions from a DLL is used. The DLL is created using the...

Visualizing optimization results using a selected criterion

In the article, we continue to develop the MQL application for working with optimization results. This time, we will show how to form the table of the best results after optimizing the parameters by...

Testing currency pair patterns: Practical application and real trading perspectives. Part IV

This article concludes the series devoted to trading currency pair baskets. Here we test the remaining pattern and discuss applying the entire method in real trading. Market entries and exits,...

Deep Neural Networks (Part VII). Ensemble of neural networks: stacking

We continue to build ensembles. This time, the bagging ensemble created earlier will be supplemented with a trainable combiner — a deep neural network. One neural network combines the 7 best ensemble...

How to create Requirements Specification for ordering a trading robot

Are you trading using your own strategy? If your system rules can be formally described as software algorithms, it is better to entrust trading to an automated Expert Advisor. A robot does not need...

Implementing indicator calculations into an Expert Advisor code

The reasons for moving an indicator code to an Expert Advisor may vary. How to assess the pros and cons of this approach? The article describes implementing an indicator code into an EA. Several...

Comparative analysis of 10 flat trading strategies

The article explores the advantages and disadvantages of trading in flat periods. The ten strategies created and tested within this article are based on the tracking of price movements inside a...

Applying the Monte Carlo method for optimizing trading strategies

Before launching a robot on a trading account, we usually test and optimize it on quotes history. However, a reasonable question arises: how can past results help us in the future? The article...

Deep Neural Networks (Part VI). Ensemble of neural network classifiers: bagging

The article discusses the methods for building and training ensembles of neural networks with bagging structure. It also determines the peculiarities of hyperparameter optimization for individual...

Expert Advisor featuring GUI: Creating the panel (part I)

Despite the fact that many traders still prefer manual trading, it is hardly possible to completely avoid the automation of routine operations. The article shows an example of developing a...

How to analyze the trades of the Signal selected in the chart

The trade Signals service develops in leaps and bounds. Trusting our funds to a signal provider, we would like to minimize the risk of losing our deposit. So how to puzzle out in this forest of trade...

Improving Panels: Adding transparency, changing background color and inheriting from CAppDialog/CWndClient

In this article, we continue studying the use of CAppDialog. Now we will learn how to set color for the background, borders and header of the dialog box. Also, this article provides a step-by-step...

Social Trading. Can a profitable signal be made even better?

Most subscribers choose a trade signal by the beauty of the balance curve and by the number of subscribers. This is why many today's providers care of beautiful statistics rather than of real signal...

Visual strategy builder. Creating trading robots without programming

This article presents a visual strategy builder. It is shown how any user can create trading robots and utilities without programming. Created Expert Advisors are fully functional and can be tested in...

Developing the oscillator-based ZigZag indicator. Example of executing a requirements specification

The article demonstrates the development of the ZigZag indicator in accordance with one of the sample specifications described in the article "How to prepare Requirements Specification when ordering...

Processing optimization results using the graphical interface

This is a continuation of the idea of processing and analysis of optimization results. This time, our purpose is to select the 100 best optimization results and display them in a GUI table. The user...

Random Decision Forest in Reinforcement learning

Random Forest (RF) with the use of bagging is one of the most powerful machine learning methods, which is slightly inferior to gradient boosting. This article attempts to develop a self-learning...