Articles with MQL5 programming examples

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Access a huge collection of articles with code examples showing how to create indicators and trading robots for the MetaTrader platform in the MQL5 language. Source codes are attached to the articles, so you can open them in MetaEditor and run them to see how the applications work.

These articles will be useful both for those who have just started exploring automated trading and for professional traders with programming experience. They feature not only examples, but also contain new ideas.

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All about Automated Trading Championship: Reporting the Championship 2007
All about Automated Trading Championship: Reporting the Championship 2007

All about Automated Trading Championship: Reporting the Championship 2007

The present article contains Weekly Reports of the ATC 2007. These materials are like snapshots, they are interesting-to-read not only during the Championship, but years later as well.
All about Automated Trading Championship: Interviews with the Participants'07
All about Automated Trading Championship: Interviews with the Participants'07

All about Automated Trading Championship: Interviews with the Participants'07

The published interviews of Championship 2007 bear the stamp of the results obtained during the preceding contest. The first Championship evoked a wide response on the internet and in printings. The leading developer of the MetaQuotes Software Corp. tells about changes made to the forthcoming Automated Trading Championship 2007. We put our questions to the developer of a well-known indicating complex ZUP, Eugeni Neumoin (nen) and spoke to an equity trader, Alexander Pozdnishev (AlexSilver).
All about Automated Trading Championship: Reporting the Championship 2006
All about Automated Trading Championship: Reporting the Championship 2006

All about Automated Trading Championship: Reporting the Championship 2006

This article contains Weekly Reports of the ATC 2006. These materials are like snapshots, they are interesting-to-read not only during the Championship, but years later as well.
Trend Lines Indicator Considering T. Demark's Approach
Trend Lines Indicator Considering T. Demark's Approach

Trend Lines Indicator Considering T. Demark's Approach

The indicator shows trend lines displaying the recent events on the market. The indicator is developed considering the recommendations and the approach of Thomas Demark concerning technical analysis. The indicator displays both the last direction of the trend and the next-to-last opposite direction of the trend.
All about Automated Trading Championship: Interviews with the Participants'06
All about Automated Trading Championship: Interviews with the Participants'06

All about Automated Trading Championship: Interviews with the Participants'06

Interviews with the Participants of Automated Trading Championship 2006 demonstrated a great variety of views of automated trading and trading as a whole. You can see yourselves which ideas turned out to work better during the Championship and which of them could not pass the critical verification through a three-month long "test-drive" on a contest account.
Interaction between MetaTrader 4 and Matlab via DDE
Interaction between MetaTrader 4 and Matlab via DDE

Interaction between MetaTrader 4 and Matlab via DDE

Step-by-step instructions of how to organize data transfer from Matlab to MetaTrader 4 using DDE.
All about Automated Trading Championship: Statistical Reports
All about Automated Trading Championship: Statistical Reports

All about Automated Trading Championship: Statistical Reports

Creating a profitable and stable trading system is always related to statistical data processing. In this article, we pout together statistical reports of the Automated Trading Championships 2006-2007. It may well be that the information they provide will help you find new trading ideas or correct the existing ones. Analyze the data and save your time.
All about Automated Trading Championship: Registration
All about Automated Trading Championship: Registration

All about Automated Trading Championship: Registration

This article comprises useful materials that will help you learn more about the procedure of registration for participation in the Automated Trading Championship.
The Statistic Analysis of Market Movements and Their Prognoses
The Statistic Analysis of Market Movements and Their Prognoses

The Statistic Analysis of Market Movements and Their Prognoses

The present article contemplates the wide opportunities of the statistic approach to marketing. Unfortunately, beginner traders deliberately fail to apply the really mighty science of statistics. Meanwhile, it is the only thing they use subconsciously while analyzing the market. Besides, statistics can give answers to many questions.
Two-Stage Modification of Opened Positions
Two-Stage Modification of Opened Positions

Two-Stage Modification of Opened Positions

The two-stage approach allows you to avoid the unnecessary closing and re-opening of positions in situations close to the trend and in cases of possible occurrence of divirgence.
Integrating MetaTrader 4  Client Terminal with MS SQL Server
Integrating MetaTrader 4  Client Terminal with MS SQL Server

Integrating MetaTrader 4 Client Terminal with MS SQL Server

The article gives an example of integrating MetaTrader 4 Client Terminal with MS SQL Server using a dll. Attached are both source codes in С++ and in MQL4, and a ready-made and compiled Visual C++ 6.0 SP5 project.
A Non-Trading EA Testing Indicators
A Non-Trading EA Testing Indicators

A Non-Trading EA Testing Indicators

All indicators can be divided into two groups: static indicators, the displaying of which, once shown, always remains the same in history and does not change with new incoming quotes, and dynamic indicators that display their status for the current moment only and are fully redrawn when a new price comes. The efficiency of a static indicator is directly visible on the chart. But how can we check whether a dynamic indicator works ok? This is the question the article is devoted to.
MetaEditor:Templates as a Spot to Stand On
MetaEditor:Templates as a Spot to Stand On

MetaEditor:Templates as a Spot to Stand On

It may be news to many our readers that all preparations for writing an EA can be performed once and then used continuously.
Fallacies, Part 1: Money Management is Secondary and Not Very Important
Fallacies, Part 1: Money Management is Secondary and Not Very Important

Fallacies, Part 1: Money Management is Secondary and Not Very Important

The first demonstration of testing results of a strategy based on 0.1 lot is becoming a standard de facto in the Forum. Having received "not so bad" from professionals, a beginner sees that "0.1" testing brings rather modest results and decides to introduce an aggressive money management thinking that positive mathematic expectation automatically provides positive results. Let's see what results can be achieved. Together with that we will try to construct several artificial balance graphs that are very instructive.
Easy Way to Publish a Video at MQL4.Community
Easy Way to Publish a Video at MQL4.Community

Easy Way to Publish a Video at MQL4.Community

It is usually easier to show, than to explain. We offer a simple and free way to create a video clip using CamStudio for publishing it in MQL.community forums.
An Expert Advisor Made to Order. Manual for a Trader
An Expert Advisor Made to Order. Manual for a Trader

An Expert Advisor Made to Order. Manual for a Trader

Not all traders are programmers. And not all of the programmers are really good ones. So, what should be done, if you need to automate your system by do not have time and desire to study MQL4?
Equivolume Charting Revisited
Equivolume Charting Revisited

Equivolume Charting Revisited

The article dwells on the method of constructing charts, at which each bar consists of the equal number of ticks.
MQL4 Language for Newbies. Custom Indicators (Part 2)
MQL4 Language for Newbies. Custom Indicators (Part 2)

MQL4 Language for Newbies. Custom Indicators (Part 2)

This is the fifth article from the series "MQL4 Languages for Newbies". Today we will learn to use graphical objects - a very powerful development tool that allows to widen substantially possibilities of using indicators. Besides, they can be used in scripts and Expert Advisors. We will learn to create objects, change their parameters, check errors. Of course, I cannot describe in details all objects - there are a lot of them. But you will get all necessary knowledge to be able to study them yourself. This article also contains a step-by-step guide-example of creating a complex signal indicator. At that, many parameters will be adjustable which will make it possible to change easily the appearance of the indicator.
Displaying a News Calendar
Displaying a News Calendar

Displaying a News Calendar

This article contains the description of writing a simple and convenient indicator displaying in a working area the main economic events from external Internet resources.
MQL4 Language for Newbies. Custom Indicators (Part 1)
MQL4 Language for Newbies. Custom Indicators (Part 1)

MQL4 Language for Newbies. Custom Indicators (Part 1)

This is the fourth article from the series "MQL4 Languages for Newbies". Today we will learn to write custom indicators. We will get acquainted with the classification of indicator features, will see how these features influence the indicator, will learn about new functions and optimization, and, finally, we will write our own indicators. Moreover, at the end of the article you will find advice on the programming style. If this is the first article "for newbies" that you are reading, perhaps it would be better for you to read the previous ones. Besides, make sure that you have understood properly the previous material, because the given article does not explain the basics.
MT4TerminalSync - System for the Synchronization of MetaTrader 4 Terminals
MT4TerminalSync - System for the Synchronization of MetaTrader 4 Terminals

MT4TerminalSync - System for the Synchronization of MetaTrader 4 Terminals

This article is devoted to the topic "Widening possibilities of MQL4 programs by using functions of operating systems and other means of program development". The article describes an example of a program system that implements the task of the synchronization of several terminal copies based on a single source template.
Can the Forex Market Be Forecasted? How to Create One's Own Trading Strategy?
Can the Forex Market Be Forecasted? How to Create One's Own Trading Strategy?

Can the Forex Market Be Forecasted? How to Create One's Own Trading Strategy?

Everyone starting to work in Forex tries to answer these questions. But not everyone finds the answer, even after many years of hard work and search. I personally have answered this question, as well as many other questions of this article. As a result of these answers a way of creating an efficient trading strategy was determined.
Transferring an Indicator Code into an Expert Advisor Code. Conclusion
Transferring an Indicator Code into an Expert Advisor Code. Conclusion

Transferring an Indicator Code into an Expert Advisor Code. Conclusion

This is the final article, devoted to transferring an indicator code into an Expert Advisor code. Here the author transforms on a certain example a code of an Expert Advisor so, that this EA is presented in a single file without calling custom indicators.
Using Skype to Send Messages from an Expert Advisor
Using Skype to Send Messages from an Expert Advisor

Using Skype to Send Messages from an Expert Advisor

The article deals with the ways of how to send internal messages and SMSes from an Expert Advisor to mobile phones using Skype.
Transferring an Indicator Code into an Expert Advisor Code. General Structural Schemes of an Expert Advisor and Indicator Functions
Transferring an Indicator Code into an Expert Advisor Code. General Structural Schemes of an Expert Advisor and Indicator Functions

Transferring an Indicator Code into an Expert Advisor Code. General Structural Schemes of an Expert Advisor and Indicator Functions

This article dwells on the ways of transferring an indicator code into an Expert Advisor Code and on writing Expert Advisors with no calling to custom indicators, and with the whole program code for the calculation of necessary indicator values inside the Expert Advisor. This article gives a general scheme of Expert Advisor changing and the idea of building an indicator function based on a custom indicator. The article is intended for readers, already having experience of programming in MQL4 language.
Transferring an Indicator Code into an Expert Advisor Code. Indicator Structure
Transferring an Indicator Code into an Expert Advisor Code. Indicator Structure

Transferring an Indicator Code into an Expert Advisor Code. Indicator Structure

This article dwells on the ways of transferring an indicator code into an Expert Advisor Code and on writing Expert Advisors with no calling to custom indicators, and with the whole program code for the calculation of necessary indicator values inside the Expert Advisor. This article gives a general scheme of an indicator structure, emulation of indicator buffers in an Expert Advisor and substitution of the function IndicatorCounted(). The article is intended for readers, already having experience of programming in MQL4 language.
MetaTrader 4 Working under Antiviruses and Firewalls
MetaTrader 4 Working under Antiviruses and Firewalls

MetaTrader 4 Working under Antiviruses and Firewalls

The most of traders use special programs to protect their PCs. Unfortunately, these programs don't only protect computers against intrusions, viruses and Trojans, but also consume a significant amount of resources. This relates to network traffic, first of all, which is wholly controlled by various intelligent antiviruses and firewalls. The reason for writing this article was that traders complained of slowed MetaTrader 4 Client Terminal when working with Outpost Firewall. We decided to make our own research using Kaspersky Antivirus 6.0 and Outpost Firewall Pro 4.0.
Indicator Alternative Ichimoku – Setup, Examples of Usage
Indicator Alternative Ichimoku – Setup, Examples of Usage

Indicator Alternative Ichimoku – Setup, Examples of Usage

How to set up Alternative Ichimoku correctly? Read the description of parameters setting up. The article will help you understand the methods of setting up parameters not only of the indicator Ichimoku. Certainly you will also better understand how to set up the standard Ichimoku Kinko Hyo.
Three-Dimensional Graphs - a Professional Tool of Market Analyzing
Three-Dimensional Graphs - a Professional Tool of Market Analyzing

Three-Dimensional Graphs - a Professional Tool of Market Analyzing

In this article we will write a simple library for the construction of 3D graphs and their further viewing in Microsoft Excel. We will use standard MQL4 options to prepare and export data into *.csv file.
Practical Application of Cluster Indicators in FOREX
Practical Application of Cluster Indicators in FOREX

Practical Application of Cluster Indicators in FOREX

Cluster indicators are sets of indicators that divide currency pairs into separate currencies. Indicators allow to trace the relative currency fluctuation, determine the potential of forming new currency trends, receive trade signals and follow medium-term and long-term positions.
Technical Analysis: Make the Impossible Possible!
Technical Analysis: Make the Impossible Possible!

Technical Analysis: Make the Impossible Possible!

The article answers the question: Why can the impossible become possible where much suggests otherwise? Technical analysis reasoning.
Breakpoints in Tester: It's Possible!
Breakpoints in Tester: It's Possible!

Breakpoints in Tester: It's Possible!

The article deals with breakpoint emulation when passed through Tester, debug information being displayed.
Construction of Fractal Lines
Construction of Fractal Lines

Construction of Fractal Lines

The article describes construction of fractal lines of various types using trend lines and fractals.
MQL4 Language for Newbies. Technical Indicators and Built-In Functions
MQL4 Language for Newbies. Technical Indicators and Built-In Functions

MQL4 Language for Newbies. Technical Indicators and Built-In Functions

This is the third article from the series "MQL4 Language for Newbies". Now we will learn to use built-in functions and functions for working with technical indicators. The latter ones will be essential in the future development of your own Expert Advisors and indicators. Besides we will see on a simple example, how we can trace trading signals for entering the market, for you to understand, how to use indicators correctly. And at the end of the article you will learn something new and interesting about the language itself.
Practical Use of the Virtual Private Server (VPS) for Autotrading
Practical Use of the Virtual Private Server (VPS) for Autotrading

Practical Use of the Virtual Private Server (VPS) for Autotrading

Autotrading using VPS. This article is intended exceptionally for autotraders and autotrading supporters.
ZUP - Universal ZigZag with Pesavento Patterns. Part 2
ZUP - Universal ZigZag with Pesavento Patterns. Part 2

ZUP - Universal ZigZag with Pesavento Patterns. Part 2

ZUP - Universal ZigZag with Pesavento Patterns. Part 2 - Description of Embedded Tools
Strings: Table of ASCII Symbols and Its Use
Strings: Table of ASCII Symbols and Its Use

Strings: Table of ASCII Symbols and Its Use

In this article we will analyze the table of ASCII symbols and the ways it can be used. We will also deal with some new functions, the principle of operation of which is based on the peculiarities of the ASCII table, and then we will create a new library, which will include these functions. They are quite popular in other programming languages, but they are not included into the list of built-in functions. Besides, we will examine in details the basics of working with strings. So, I think you will certainly learn something new about this useful type of data.
Interaction between MetaTrader 4 and Matlab via CSV Files
Interaction between MetaTrader 4 and Matlab via CSV Files

Interaction between MetaTrader 4 and Matlab via CSV Files

Step-by-step instructions of how to organize data arrays exchange between MetaTrader 4 and Matlab via CSV files.
Sending Trading Signals in a Universal Expert Advisor
Sending Trading Signals in a Universal Expert Advisor

Sending Trading Signals in a Universal Expert Advisor

The article describes different ways of sending trading signals from a signal program unit of a universal Expert Advisor into the positions and orders controlling unit. It dwells on serial and parallel interfaces.
Theoretical Basis of Building Cluster Indicators for FOREX
Theoretical Basis of Building Cluster Indicators for FOREX

Theoretical Basis of Building Cluster Indicators for FOREX

Cluster indicators are sets of indicators that divide currency pairs into separate currencies. Indicators allow to trace the relative currency fluctuation, determine the potential of formating new currency trends, receive trade signals and follow medium-term and long-term positons.