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Common Errors in MQL4 Programs and How to Avoid Themru | cn ]
Common Errors in MQL4 Programs and How to Avoid Them

To avoid critical completion of programs, the previous version compiler handled many errors in the runtime environment. For example, division by zero or array out of range are critical errors and usually lead to program crash. The new compiler can detect actual or potential sources of errors and improve code quality. In this article, we discuss possible errors that can be detected during compilation of old programs and see how to fix them.

Upgrade to MetaTrader 4 Build 600 and Higherru | cn ]
Upgrade to MetaTrader 4 Build 600 and Higher

The new version of the MetaTrader 4 terminal features the updated structure of user data storage. In earlier versions all programs, templates, profiles etc. were stored directly in terminal installation folder. Now all necessary data required for a particular user are stored in a separate directory called data folder. Read the article to find answers to frequently asked questions.

Data Structure in MetaTrader 4 Build 600 and Higherru | cn ]
Data Structure in MetaTrader 4 Build 600 and Higher

MetaTarder 4 build 600 features the new structure and location of the client terminal files. Now, MQL4 applications are placed in separate directories according to the program type (Expert Advisors, indicators or scripts). In most cases, the terminal data is now stored in a special data folder separated from the terminal installation location. In this article, we will describe in details how data is transferred, as well as the reasons for introducing the new storage system.

Offline Charts in the New MQL4ru | cn ]
Offline Charts in the New MQL4

Updated MQL4 has the new format for storing historical data and provides the appropriate MqlRates structure for convenient storage of Time, Open, Low, High, Close and Volume values. For many years, traders have developed their MQL4 applications that collect and store their data in HST files for generating offline charts. We can assure you that all previously compiled EX4 files will work in the new MetaTrader 4 terminal the same way as before.

Video tutorial: MetaTrader Signals Service
Video tutorial: MetaTrader Signals Service

In just 15 minutes, this video tutorial explains what MetaTrader Signals Service is, and demonstrates in great detail how to subscribe to trade signals and how to become a signal provider in our service. By watching this tutorial, you will be able to subscribe to any trading signal, or publish and promote your own signals in our service.

Testing and Optimization of Expert Advisorsru ]
Testing and Optimization of Expert Advisors

The article provides a detailed description of the process of testing and optimizing Expert Advisors in the MetaTrader 4 Strategy Tester. The importance of such information and the need for this publication cannot be underestimated. A lot of users who only get started with the MetaTrader 4 trading platform have a very vague idea of what and how needs to be done when working with Expert Advisors. The proposed article gives simple and clear answers to all of these questions and provides a slightly more professional approach to handling these issues using a specific example.

Lite_EXPERT2.mqh: Expert Advisor Implementation Examplesru ]
Lite_EXPERT2.mqh: Expert Advisor Implementation Examples

In this article, the author continues to familiarize the readers with the Lite_EXPERT2.mqh functions using real Expert Advisor implementation examples. The article deals with the idea of using floating pending orders and pending orders that vary dynamically from deal to deal which are determined based on Average True Range (ATR) indicator values.

Advanced Analysis of a Trading Accountru ]
Advanced Analysis of a Trading Account

The article deals with the automatic system for analyzing any trading account in MetaTrader 4 terminal. Technical aspects of a generated report and interpretation of the obtained results are considered. Conclusions on improving trading factors are drawn after the detailed review of the report. MQLab™ Graphic Report script is used for analysis.

Visual Optimization of Indicator and Signal Profitabilityru ]
Visual Optimization of Indicator and Signal Profitability

This article is a continuation and development of my previous article "Visual Testing of Profitability of Indicators and Alerts". Having added some interactivity to the parameter changing process and having reworked the study objectives, I have managed to get a new tool that does not only show the prospective trade results based on the signals used but also allows you to immediately get a layout of deals, balance chart and the end result of trading by moving virtual sliders that act as controls for signal parameter values in the main chart.

Lite_EXPERT2.mqh: Functional Kit for Developers of Expert Advisorsru ]
Lite_EXPERT2.mqh: Functional Kit for Developers of Expert Advisors

This article continues the series of articles "Expert Advisors Based on Popular Trading Systems and Alchemy of Trading Robot Optimization". It familiarizes the readers with a more universal function library of the Lite_EXPERT2.mqh file.

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