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How to Write an Expert Advisor or an Indicator

MQL5 Source Code Library for MetaTrader 5 - 84

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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The narrowest range indicator defines the moments when the market is in the "compressed" state that says of the future breakthrough in this or that side

Signals of entries and exits on the system "Friday effect"

The class to play music using the MIDI device

Calculation of 32 digit string MD5-hash from transmitted byte array

The Moving Average drawn on the basis of the EMA algorithm. A linear interpolation of two different period EMA is used

An interesting trend indicator drawn on the basis of the simple Moving Average

ElliottWaveMaker 3.0 is Tool for Semi-Automatic Analysis of Elliott Waves and Andrew's Pitchforks, a logical extension of version 2.0 known as AutoElliottWaveMaker. In version 3.0 minor errors are corrected, the ability to draw Andrew's Pitchforks and a few additional functions are added.

An Expert Advisor based on the difference of two moving averages.

The fractal adaptive Moving Average by John Ehlers. Version 1.1 7/17/2006

The simplest semaphore signal indicator based on different period Moving Averages

The Expert Advisor to perform global Take Profit for all open positions.

The Expert Advisor to perform global Stop Loss on all open positions

Show minutes and seconds left before new candle is appeared.

The OpenSellPosition_X script is created to sell at fixed values of Stop Loss and Take Profit in points from the current price. Position volume is determined on the basis of the level of losses.

The OpenBuyPosition_X script is designed to buy at fixed values of Stop Loss and Take Profit in points from the current price. Position volume is determined on the basis of the level of losses.

Library to work with Skype.

The ergodic CCI.

The trend indicator drawn on the basis of a comparison of six levels of simple Moving Averages with High and Low of the current candlestick

Calculate Average Speed of price.

The Moving Average drawn on the basis of Gauss algorithm

The indicator which defines the moments when the market becomes asymmetric and there are strong trend changes

The trading system is drawn on the basis of the signals of the JMASlope indicator.

The channel is drawn using Gauss Transform

MPC is a script which measures (searches) the most frequently occurring candlesticks

There's a lot of Fibonacci indicators out there but I decided to make my own indicator for you.

The trend indicator which considers the market volatility

A trend, normalized oscillator drawn in the form of a histogram

A semaphore arrow signal indicator drawn on the basis of the EMA trend and reversal signals from crossings of the StepSto_v1 oscillator and its signal line

The channel drawn on High and Low prices of daily candlesticks

The speed indicator of price change smoothed by the JMA averaging.

A tape indicator which defines the market state using the AbsoluteStrength indicator

A typical and sufficiently smooth oscillator which can apply all oscillator analytical instruments

Volume indicator smoothed by the Laguerre filter

The indicator displays the situation when the direction of price movement and technical indicators does not coincide

A semaphore signal indicator for the moments when the trend force measured by the deviation of the price from the Moving Average is higher than a fixed limit

The Expert Advisor "catches" changes of the positions (opening, reversal, closing, triggering of Stop Loss and Take Profit) and depending on the configurations triggers the sound file, outputs alert or sends e-mail.

The indicator to determine the trend reversals on the basis of Bollinger Bands

The unnormalized oscillator using Fisher Transform

The "Fast ZigZag" indicator including the drawing of DiNapoli's target levels

The indicator uses in the calculation the deviation of its previous value from price

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