Download MQL4 and Start Trading Forex with MetaTrader 4
How to Download MQL4: A Guide for Forex Traders
If you are interested in automated forex trading, you may have heard of MQL4, a programming language for MetaTrader 4, one of the most popular trading platforms in the world. But what is MQL4 exactly, and how can you download and use it? In this article, we will answer these questions and show you how to get started with MQL4 in a few simple steps.
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What is MQL4 and why you need it
MQL4 stands for MetaQuotes Language 4, an object-oriented programming language that is designed specifically for MetaTrader 4. MetaTrader 4 is a free online trading terminal that allows you to trade forex, stocks, futures and other financial instruments. It also provides various tools for technical analysis, market news, signals and automated trading.
MQL4 is a programming language for MetaTrader 4
MQL4 is integrated with MetaTrader 4, which means that you can use it to create your own custom programs that run on the platform. These programs can be:
Expert Advisors: trading robots that can execute trades automatically based on predefined rules and conditions.
Indicators: graphical tools that can display various market data and trends on the charts.
Scripts: one-time executable programs that can perform specific tasks such as opening or closing orders, modifying settings, etc.
Libraries: collections of functions and classes that can be used by other programs.
MQL4 allows you to create trading robots, indicators, scripts and libraries
With MQL4, you can create your own trading robots, indicators, scripts and libraries that suit your trading style and preferences. You can also modify or improve existing ones, or use those created by other developers. There are thousands of free and paid MQL4 programs available on the Internet, especially on the website, where you can find:
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MQL4 Code Base: a catalog of various programs that you can download for free.
Articles: a library of articles that cover different topics related to MQL4 programming and trading.
Freelance: a service where you can hire professional programmers to create custom programs for you.
Market: a store where you can buy or sell MQL4 programs.
Signals: a platform where you can subscribe to or offer trading signals from your account.
MQL4 can help you automate your trading strategies and optimize your performance
One of the main advantages of MQL4 is that it can help you automate your trading strategies and optimize your performance. By using MQL4, you can:
Backtest and optimize your trading robots: you can use the Strategy Tester in MetaTrader 4 to test and optimize your trading robots on historical data, and evaluate their profitability, reliability and risk.
Run multiple trading robots simultaneously: you can run multiple trading robots on different charts and timeframes, and diversify your portfolio and reduce your exposure.
Monitor and control your trading robots remotely: you can use the MetaTrader 4 mobile app or the web platform to monitor and control your trading robots from anywhere, anytime.
How to download and install MQL4 on your PC
To download and install MQL4 on your PC, you need to download and install MetaTrader 4 first. Here are the steps to do so:
Download MetaTrader 4 from the official website or your broker
You can download MetaTrader 4 for free from the or from your broker's website. Make sure you choose the version that is compatible with your operating system (Windows, Mac, Linux).
Run the installation wizard and choose a directory for the program
After downloading the file, run the installation wizard and follow the instructions. You will be asked to choose a directory for the program, accept the license agreement, and select the components to install. You can also choose to create a desktop shortcut for easy access.
Launch MetaTrader 4 and open a demo or live account
Once the installation is complete, launch MetaTrader 4 and open a demo or live account. A demo account allows you to practice trading with virtual money, while a live account allows you to trade with real money. You will need to enter your personal details, choose a server, and set a password. You can also use an existing account if you have one.
How to access and use MQL4 in MetaTrader 4
To access and use MQL4 in MetaTrader 4, you need to open the MetaEditor, a built-in editor that allows you to create and edit MQL4 programs. Here are the steps to do so:
Open the MetaEditor from the Tools menu or by pressing F4
You can open the MetaEditor from the Tools menu or by pressing F4 on your keyboard. The MetaEditor will open in a separate window, where you will see various tabs and panels.
Create a new MQL4 program or open an existing one from the Navigator window
You can create a new MQL4 program or open an existing one from the Navigator window, which is located on the left side of the MetaEditor. To create a new program, right-click on the folder where you want to save it (Expert Advisors, Indicators, Scripts or Libraries), and select New. A wizard will guide you through the process of choosing a name, type, inputs and properties for your program. To open an existing program, double-click on it or drag it to the editor area.
Write, compile, debug and test your code in the MetaEditor
You can write, compile, debug and test your code in the MetaEditor using various tools and features. You can:
Write your code using syntax highlighting, auto-completion, templates, snippets and comments: these features help you write your code faster, easier and more accurately.
Compile your code using the Compile button or by pressing F7: this feature checks your code for errors and warnings, and generates an executable file that can be run on MetaTrader 4.
Debug your code using breakpoints, watches, locals and call stack: these features help you find and fix errors in your code by pausing the execution, inspecting variables and tracing functions.
Test your code using the Strategy Tester or by attaching it to a chart: these features help you evaluate the performance of your program on historical or real-time data.
Attach your program to a chart or run it in the Strategy Tester
To attach your program to a chart or run it in the Strategy Tester, you need to switch back to MetaTrader 4 and follow these steps:
Attach your program to a chart
To attach your program to a chart, you need to:
Select the chart where you want to run your program.
Right-click on the chart and select Expert Advisors, Indicators or Scripts from the context menu.
Choose your program from the list and click OK.
Adjust the settings and parameters of your program if needed.
Make sure the AutoTrading button is enabled on the toolbar.
Your program will start running on the chart and you will see its name and status on the top right corner. You can also see its output messages, errors and logs in the Terminal window at the bottom of MetaTrader 4.
Run your program in the Strategy Tester
To run your program in the Strategy Tester, you need to:
Open the Strategy Tester from the View menu or by pressing Ctrl+R.
Select your program from the Expert Advisor drop-down list.
Select the symbol, timeframe, model, period and spread for your test.
Adjust the settings and parameters of