![Graphical Interfaces X: Word wrapping algorithm in the Multiline Text box (build 12)](https://c.mql5.com/2/27/MQL5-avatar-RedSquare-001.png)
![Graphical Interfaces X: Word wrapping algorithm in the Multiline Text box (build 12)](https://c.mql5.com/i/articles/overlay.png)
Graphical Interfaces X: Word wrapping algorithm in the Multiline Text box (build 12)
We continue to develop the Multiline Text box control. This time our task is to implement an automatic word wrapping in case a text box width overflow occurs, or a reverse word wrapping of the text to the previous line if the opportunity arises.
![Developing multi-module Expert Advisors](https://c.mql5.com/2/26/4990806_hdlx-Gear-cgy8j3o-gb3o7dl-sbeht.png)
![Developing multi-module Expert Advisors](https://c.mql5.com/i/articles/overlay.png)
Developing multi-module Expert Advisors
MQL programming language allows implementing the concept of modular development of trading strategies. The article shows an example of developing a multi-module Expert Advisor consisting of separately compiled file modules.
![Extending MQL5 Standard Library and Reusing Code](https://c.mql5.com/2/0/regular-polyhedra-02.png)
![Extending MQL5 Standard Library and Reusing Code](https://c.mql5.com/i/articles/overlay.png)
Extending MQL5 Standard Library and Reusing Code
MQL5 Standard Library makes your life as a developer easier. Nevertheless, it does not implement all the needs of all developers in the world, so if you feel that you need some more custom stuff you can take a step further and extend. This article walks you through integrating MetaQuotes' Zig-Zag technical indicator into the Standard Library. We get inspired by MetaQuotes' design philosophy to achieve our goal.
![A system of voice notifications for trade events and signals](https://c.mql5.com/2/39/logo.png)
![A system of voice notifications for trade events and signals](https://c.mql5.com/i/articles/overlay.png)
A system of voice notifications for trade events and signals
Nowadays, voice assistants play a prominent role in human life, as we often use navigators, voice search and translators. In this article, I will try to develop a simple and user friendly system of voice notifications for various trade events, market states or signals generated by trading signals.
![Graphical Interfaces IX: The Color Picker Control (Chapter 1)](https://c.mql5.com/2/23/IX.png)
![Graphical Interfaces IX: The Color Picker Control (Chapter 1)](https://c.mql5.com/i/articles/overlay.png)
Graphical Interfaces IX: The Color Picker Control (Chapter 1)
With this article we begin chapter nine of series of articles dedicated to creating graphical interfaces in MetaTrader trading terminals. It consists of two chapters where new elements of controls and interface, such as color picker, color button, progress bar and line chart are presented.
![Graphical Interfaces VIII: The Calendar Control (Chapter 1)](https://c.mql5.com/2/23/av8.png)
![Graphical Interfaces VIII: The Calendar Control (Chapter 1)](https://c.mql5.com/i/articles/overlay.png)
Graphical Interfaces VIII: The Calendar Control (Chapter 1)
In the part VIII of the series of articles dedicated to creating graphical interfaces in MetaTrader, we will consider complex composite controls like calendars, tree view, and file navigator. Due to the large amount of information, there are separate articles written for every subject. The first chapter of this part describes the calendar control and its expanded version — a drop down calendar.
![Graphical Interfaces V: The List View Element (Chapter 2)](https://c.mql5.com/2/22/v-avatar.png)
![Graphical Interfaces V: The List View Element (Chapter 2)](https://c.mql5.com/i/articles/overlay.png)
Graphical Interfaces V: The List View Element (Chapter 2)
In the previous chapter, we wrote classes for creating vertical and horizontal scrollbars. In this chapter, we will implement them. We will write a class for creating the list view element, a compound part of which will be a vertical scrollbar.
![Adaptive indicators](https://c.mql5.com/2/50/adaptive_indicators_600x314.jpg)
Adaptive indicators
In this article, I will consider several possible approaches to creating adaptive indicators. Adaptive indicators are distinguished by the presence of feedback between the values of the input and output signals. This feedback allows the indicator to independently adjust to the optimal processing of financial time series values.
![The Principles of Economic Calculation of Indicators](https://c.mql5.com/2/0/optimize_MQL5.png)
![The Principles of Economic Calculation of Indicators](https://c.mql5.com/i/articles/overlay.png)
The Principles of Economic Calculation of Indicators
Calls to user and technical indicators takes up very little space in the program code of automated trading systems. Often it’s simply a few code lines. But it often happens that it is these few lines of code which use up the largest portion of time, which needs to be spent on testing the Expert Advisor. Therefore, everything that is related to data calculations within an indicator, needs to be considered much more thoroughly than would seem at first glance. This article will talk precisely about this.
![Practical Application Of Databases For Markets Analysis](https://c.mql5.com/2/0/dar.png)
![Practical Application Of Databases For Markets Analysis](https://c.mql5.com/i/articles/overlay.png)
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 Systems (DBMS), that can structure, systematize and organize data for their computer storage and processing. As for trading, the most of analysts don't use databases in their work. But there are tasks, where such a solution would have to be handy. This article provides an example of indicators, that can save and load data from databases both with client-server and file-server architectures.
![Decreasing Memory Consumption by Auxiliary Indicators](https://c.mql5.com/2/0/MQL5_indicator_memory_optimization.png)
![Decreasing Memory Consumption by Auxiliary Indicators](https://c.mql5.com/i/articles/overlay.png)
Decreasing Memory Consumption by Auxiliary Indicators
If an indicator uses values of many other indicators for its calculations, it consumes a lot of memory. The article describes several methods of decreasing the memory consumption when using auxiliary indicators. Saved memory allows increasing the number of simultaneously used currency pairs, indicators and strategies in the client terminal. It increases the reliability of trade portfolio. Such a simple care about technical resources of your computer can turn into money resources at your deposit.
![Graphical Interfaces XI: Text edit boxes and Combo boxes in table cells (build 15)](https://c.mql5.com/2/28/MQL5-avatar-XI-build_15.png)
![Graphical Interfaces XI: Text edit boxes and Combo boxes in table cells (build 15)](https://c.mql5.com/i/articles/overlay.png)
Graphical Interfaces XI: Text edit boxes and Combo boxes in table cells (build 15)
In this update of the library, the Table control (the CTable class) will be supplemented with new options. The lineup of controls in the table cells is expanded, this time adding text edit boxes and combo boxes. As an addition, this update also introduces the ability to resize the window of an MQL application during its runtime.
![Graphical Interfaces II: Setting Up the Event Handlers of the Library (Chapter 3)](https://c.mql5.com/2/22/Graphic-interface-part2__2.png)
![Graphical Interfaces II: Setting Up the Event Handlers of the Library (Chapter 3)](https://c.mql5.com/i/articles/overlay.png)
Graphical Interfaces II: Setting Up the Event Handlers of the Library (Chapter 3)
The previous articles contain the implementation of the classes for creating constituent parts of the main menu. Now, it is time to take a close look at the event handlers in the principle base classes and in the classes of the created controls. We will also pay special attention to managing the state of the chart depending on the location of the mouse cursor.
![Graphical Interfaces XI: Integrating the Standard Graphics Library (build 16)](https://c.mql5.com/2/29/MQL5-avatar-XI-CGraph.png)
![Graphical Interfaces XI: Integrating the Standard Graphics Library (build 16)](https://c.mql5.com/i/articles/overlay.png)
Graphical Interfaces XI: Integrating the Standard Graphics Library (build 16)
A new version of the graphics library for creating scientific charts (the CGraphic class) has been presented recently. This update of the developed library for creating graphical interfaces will introduce a version with a new control for creating charts. Now it is even easier to visualize data of different types.
![Timeseries in DoEasy library (part 46): Multi-period multi-symbol indicator buffers](https://c.mql5.com/2/39/MQL5-avatar-doeasy-library__2.png)
![Timeseries in DoEasy library (part 46): Multi-period multi-symbol indicator buffers](https://c.mql5.com/i/articles/overlay.png)
Timeseries in DoEasy library (part 46): Multi-period multi-symbol indicator buffers
In this article, I am going to improve the classes of indicator buffer objects to work in the multi-symbol mode. This will pave the way for creating multi-symbol multi-period indicators in custom programs. I will add the missing functionality to the calculated buffer objects allowing us to create multi-symbol multi-period standard indicators.
![Indicator for Spindles Charting](https://c.mql5.com/2/19/LOGO__2.png)
![Indicator for Spindles Charting](https://c.mql5.com/i/articles/overlay.png)
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 analyze the indicator's implementation in the source code in the MQL5 language. Let's test the expert based on indicator and formulate the trading strategy.
![Building a Spectrum Analyzer](https://c.mql5.com/2/0/spectrum_MQL5__1.png)
![Building a Spectrum Analyzer](https://c.mql5.com/i/articles/overlay.png)
Building a Spectrum Analyzer
This article is intended to get its readers acquainted with a possible variant of using graphical objects of the MQL5 language. It analyses an indicator, which implements a panel of managing a simple spectrum analyzer using the graphical objects. The article is meant for readers acquianted with basics of MQL5.
![How to create a custom indicator (Heiken Ashi) using MQL5](https://c.mql5.com/2/54/heikin_ashi_600x314.jpg)
How to create a custom indicator (Heiken Ashi) using MQL5
In this article, we will learn how to create a custom indicator using MQL5 based on our preferences, to be used in MetaTrader 5 to help us read charts or to be used in automated Expert Advisors.
![Graphical Interfaces VIII: the File Navigator Control (Chapter 3)](https://c.mql5.com/2/23/av8__2.png)
![Graphical Interfaces VIII: the File Navigator Control (Chapter 3)](https://c.mql5.com/i/articles/overlay.png)
Graphical Interfaces VIII: the File Navigator Control (Chapter 3)
In the previous chapters of the eighth part of the series, our library has been reinforced by several classes for developing mouse pointers, calendars and tree views. The current article deals with the file navigator control that can also be used as part of an MQL application graphical interface.
![Graphical Interfaces XI: Rendered controls (build 14.2)](https://c.mql5.com/2/28/av.png)
![Graphical Interfaces XI: Rendered controls (build 14.2)](https://c.mql5.com/i/articles/overlay.png)
Graphical Interfaces XI: Rendered controls (build 14.2)
In the new version of the library, all controls will be drawn on separate graphical objects of the OBJ_BITMAP_LABEL type. We will also continue to describe the optimization of code: changes in the core classes of the library will be discussed.
![Graphical Interfaces XI: Refactoring the Library code (build 14.1)](https://c.mql5.com/2/28/MQL5-avatar-XI-build14.png)
![Graphical Interfaces XI: Refactoring the Library code (build 14.1)](https://c.mql5.com/i/articles/overlay.png)
Graphical Interfaces XI: Refactoring the Library code (build 14.1)
As the library grows, its code must be optimized again in order to reduce its size. The version of the library described in this article has become even more object-oriented. This made the code easier to learn. A detailed description of the latest changes will allow the readers to develop the library independently based on their own needs.
![Graphical Interfaces VIII: The Tree View Control (Chapter 2)](https://c.mql5.com/2/23/av8__1.png)
![Graphical Interfaces VIII: The Tree View Control (Chapter 2)](https://c.mql5.com/i/articles/overlay.png)
Graphical Interfaces VIII: The Tree View Control (Chapter 2)
The previous chapter of part VIII on graphical interfaces has focused on the elements of static and drop-down calendar. The second chapter will be dedicated to an equally complex element — a tree view, that is included in every complete library used for creating graphical interfaces. A tree view implemented in this article contains multiple flexible settings and modes, thus allowing to adjust this element of control to your needs.
![Developing a trading Expert Advisor from scratch (Part 31): Towards the future (IV)](https://c.mql5.com/2/49/Developing_a_trading_Expert_Advisor_011_600x314.jpg)
Developing a trading Expert Advisor from scratch (Part 31): Towards the future (IV)
We continue to remove separate parts from our EA. This is the last article within this series. And the last thing to be removed is the sound system. This can be a bit confusing if you haven't followed these article series.
![Calculation of Integral Characteristics of Indicator Emissions](https://c.mql5.com/2/0/avatar__22.png)
![Calculation of Integral Characteristics of Indicator Emissions](https://c.mql5.com/i/articles/overlay.png)
Calculation of Integral Characteristics of Indicator Emissions
Indicator emissions are a little-studied area of market research. Primarily, this is due to the difficulty of analysis that is caused by the processing of very large arrays of time-varying data. Existing graphical analysis is too resource intensive and has therefore triggered the development of a parsimonious algorithm that uses time series of emissions. This article demonstrates how visual (intuitive image) analysis can be replaced with the study of integral characteristics of emissions. It can be of interest to both traders and developers of automated trading systems.
![Indicators with on-chart interactive controls](https://c.mql5.com/2/49/indicators_interactive_controls_600x314.jpg)
Indicators with on-chart interactive controls
The article offers a new perspective on indicator interfaces. I am going to focus on convenience. Having tried dozens of different trading strategies over the years, as well as having tested hundreds of different indicators, I have come to some conclusions I want to share with you in this article.
![Graphical interfaces X: New features for the Rendered table (build 9)](https://c.mql5.com/2/26/MQL5-avatar-X-table-003-1.png)
![Graphical interfaces X: New features for the Rendered table (build 9)](https://c.mql5.com/i/articles/overlay.png)
Graphical interfaces X: New features for the Rendered table (build 9)
Until today, the CTable was the most advanced type of tables among all presented in the library. This table is assembled from edit boxes of the OBJ_EDIT type, and its further development becomes problematic. Therefore, in terms of maximum capabilities, it is better to develop rendered tables of the CCanvasTable type even at the current development stage of the library. Its current version is completely lifeless, but starting from this article, we will try to fix the situation.
![Complex indicators made easy using objects](https://c.mql5.com/2/49/Complex-indicators-made-easy-using-objects_600x314.jpg)
Complex indicators made easy using objects
This article provides a method to create complex indicators while also avoiding the problems that arise when dealing with multiple plots, buffers and/or combining data from multiple sources.
![DIY technical indicator](https://c.mql5.com/2/48/drawing-indicator__1.png)
![DIY technical indicator](https://c.mql5.com/i/articles/overlay.png)
DIY technical indicator
In this article, I will consider the algorithms allowing you to create your own technical indicator. You will learn how to obtain pretty complex and interesting results with very simple initial assumptions.
![Timeseries in DoEasy library (part 49): Multi-period multi-symbol multi-buffer standard indicators](https://c.mql5.com/2/49/doeasy_049_600x314.jpg)
Timeseries in DoEasy library (part 49): Multi-period multi-symbol multi-buffer standard indicators
In the current article, I will improve the library classes to implement the ability to develop multi-symbol multi-period standard indicators requiring several indicator buffers to display their data.
![Developing a trading Expert Advisor from scratch (Part 15): Accessing data on the web (I)](https://c.mql5.com/2/49/Developing_a_trading_Expert_Advisor_from_scratch_006_600x314.jpg)
Developing a trading Expert Advisor from scratch (Part 15): Accessing data on the web (I)
How to access online data via MetaTrader 5? There are a lot of websites and places on the web, featuring a huge amount information. What you need to know is where to look and how best to use this information.
![Developing a trading Expert Advisor from scratch (Part 12): Times and Trade (I)](https://c.mql5.com/2/49/Developing_a_trading_Expert_Advisor_from_scratch_003_600x314.jpg)
Developing a trading Expert Advisor from scratch (Part 12): Times and Trade (I)
Today we will create Times & Trade with fast interpretation to read the order flow. It is the first part in which we will build the system. In the next article, we will complete the system with the missing information. To implement this new functionality, we will need to add several new things to the code of our Expert Advisor.
![Introduction to MQL5 (Part 1): A Beginner's Guide into Algorithmic Trading](https://c.mql5.com/2/61/Beginner0s_Guide_into_Algorithmic_Trading_600x314.jpg)
Introduction to MQL5 (Part 1): A Beginner's Guide into Algorithmic Trading
Dive into the fascinating realm of algorithmic trading with our beginner-friendly guide to MQL5 programming. Discover the essentials of MQL5, the language powering MetaTrader 5, as we demystify the world of automated trading. From understanding the basics to taking your first steps in coding, this article is your key to unlocking the potential of algorithmic trading even without a programming background. Join us on a journey where simplicity meets sophistication in the exciting universe of MQL5.
![Non-linear indicators](https://c.mql5.com/2/50/non_linear_indicators_600x314.jpg)
Non-linear indicators
In this article, I will make an attempt to consider some ways of building non-linear indicators and their use in trading. There are quite a few indicators in the MetaTrader trading platform that use non-linear approaches.
![Mountain or Iceberg charts](https://c.mql5.com/2/48/UI_CCanvas.png)
![Mountain or Iceberg charts](https://c.mql5.com/i/articles/overlay.png)
Mountain or Iceberg charts
How do you like the idea of adding a new chart type to the MetaTrader 5 platform? Some people say it lacks a few things that other platforms offer. But the truth is, MetaTrader 5 is a very practical platform as it allows you to do things that can't be done (or at least can't be done easily) in many other platforms.
![Making a dashboard to display data in indicators and EAs](https://c.mql5.com/2/57/information_panel_for_displaying_data_600x314.jpg)
Making a dashboard to display data in indicators and EAs
In this article, we will create a dashboard class to be used in indicators and EAs. This is an introductory article in a small series of articles with templates for including and using standard indicators in Expert Advisors. I will start by creating a panel similar to the MetaTrader 5 data window.
![Master MQL5 from beginner to pro (Part I): Getting started with programming](https://c.mql5.com/2/60/Introduction_to_programming_using_the_MQL5_language_600x314.jpg)
Master MQL5 from beginner to pro (Part I): Getting started with programming
This article is an introduction to a series of articles about programming. It is assumed here that the reader has never dealt with programming before. So, this series starts from the very basics. Programming knowledge level: Absolute Beginner.
![Multiple indicators on one chart (Part 02): First experiments](https://c.mql5.com/2/49/Multiple-indicators-on-one-chart-6Part-027-First-experiments_600x314.jpg)
Multiple indicators on one chart (Part 02): First experiments
In the previous article "Multiple indicators on one chart" I presented the concept and the basics of how to use multiple indicators on one chart. In this article, I will provide the source code and will explain it in detail.
![Timeseries in DoEasy library (part 54): Descendant classes of abstract base indicator](https://c.mql5.com/2/49/doeasy_054_600x314.jpg)
Timeseries in DoEasy library (part 54): Descendant classes of abstract base indicator
The article considers creation of classes of descendant objects of base abstract indicator. Such objects will provide access to features of creating indicator EAs, collecting and getting data value statistics of various indicators and prices. Also, create indicator object collection from which getting access to properties and data of each indicator created in the program will be possible.
![Creating a ticker tape panel: Basic version](https://c.mql5.com/2/49/ticker_tape_600x314.jpg)
Creating a ticker tape panel: Basic version
Here I will show how to create screens with price tickers which are usually used to display quotes on the exchange. I will do it by only using MQL5, without using complex external programming.
![Timeseries in DoEasy library (part 48): Multi-period multi-symbol indicators on one buffer in a subwindow](https://c.mql5.com/2/40/MQL5-avatar-doeasy-library.png)
![Timeseries in DoEasy library (part 48): Multi-period multi-symbol indicators on one buffer in a subwindow](https://c.mql5.com/i/articles/overlay.png)
Timeseries in DoEasy library (part 48): Multi-period multi-symbol indicators on one buffer in a subwindow
The article considers an example of creating multi-symbol multi-period standard indicators using a single indicator buffer for construction and working in the indicator subwindow. I am going to prepare the library classes for working with standard indicators working in the program main window and having more than one buffer for displaying their data.