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Access the CodeBase from your MetaTrader 5 terminal

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How to Write an Expert Advisor or an Indicator

MQL5 Source Code Library for MetaTrader 5 - 15

This is the largest free source code library for MetaTrader 5 platform programs. Here you can find ready-made Expert Advisors, technical indicators, scripts and libraries. Use the code library when learning MQL5 language and develop your own automated trading applications based on the provided codes.

You can freely download and test published codes, as well as launch them in MetaTrader 5. The library is also available directly from MetaTrader 5 platform and MetaEditor development environment.

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Unity

Multi-asset cluster indicator taking all currencies as a sum of squares forming market unity (1.0)

PriceSpeed

This indicator shows average and peak speeds of price changes per minute.

RSI candles - lite ressource

Improved version based on RSI_candles by © mladen 2018 https://www.mql5.com/en/code/20968

Smoothed CCI

Class CRandom

Random number generation using the 32-bit PCG generator.

GbpChf

Advisor for trading Gbp/Chf. Algorithm for bar opening prices. Timeframe H1.

ArrowDrawingIndiEu

This indi will draw OBJ_ARROW_BUY/OBJ_ARROW_SELL when find signals on Arrow Indi Buffers.

Permutations and Combinations

A fast library for combinations and permutations in MQL.

Export Summary Grouped by Trading Days

The script exports summary of closed trades grouped by each trading day to .csv file

Variance

Variance (Welford’s method for computing)

Export Summary Grouped by Symbols

The script exports summary of closed trades grouped by each currency pair to .csv file

Close-All

A script to close all market positions and/or pending orders.

Change SL/TP on chart drop off

This script will change the SL and TP of all open trades of the symbol to the price where the script is dropped off.

Sell Relative Strengt Index

Sell Relative Strengt Index (SRSI)

ATR

Average true range

BB stops 2 - MACD

BB stops of MACD with multiple stops

Hull moving average

Lavika EURGBP/EURUSD

The Expert Advisor uses four iMA (Moving Average, MA) indicators from two timeframes. Two indicators with averaging periods 1 and 8 are created on the H1 timeframe and two indicators with averaging periods 1 and 8 are also created on the H4 timeframe.

CPairedDealInfo Class

A class to reconstruct closed trades (paired in/out deals) from history sorted by close time.

Balance Graph HTML

Display interactive HTML graph of the account balance inside the web browser.

Pan PrizMA Sin leverage 72

Builds a sliding line with a polynomial of 4 degrees. Extrapolates as a section of a given function with a sinusoid and its axial one. One value is taken from the constructed lines on each bar and a line of extrapolated values is plotted, which does not redraw.

MQL_Easy

A cross platform library/framework

Exponential moving average

Linear Weighted Moving Average

Explosion5

Advisor scalper. Trading algorithm: Candle[0]> Candle[1] * 2. Taimeframe - 4H && Day.

Simple moving average

Vortex 2

TradeTransaction Class

A base class to simplify analyzing trade transactions in MQL5.

Daily Percent Change

This indicator uses the open price for the day, and computes the percent change for that day. Use on any chart TF up to and including D1.