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How to Write an Expert Advisor or an Indicator

MQL4 and MQL5 Source Code Library

You don't know where to start learning the MQL5 or MQL4 programming language? Various programs for your MetaTrader terminal are available here. Download and study published code examples, develop your own indicators and Expert Advisors. Publish your applications in the largest library of MQL5 and MQL4 codes, and they will be available in every MetaTrader terminal and MetaEditor.

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"The Fisher Stochastic Center Of Gravity" was created by John Ehlers (УCybernetic Analysis For Stocks And FuturesФ , pg.95)

Simple class for getting the number of microseconds (µs) elapsed since January 1, 1970

& moving average , two rsi filters.

awesome oscillator, stochastic filter. expert

Volume Colored Candlestick with Bollinger Bands as the Standard Deviation

3 fibo levels.

Volatility indicator

A version of ATR adaptive smoothed Laguerre RSI that does not use any built in function

ATR adaptive smoothed Laguerre RSI 2 (extended)

Optimized ATR adaptive Laguerre RSI

trending breakout

pips in time

"The Enhanced Signal To Noise Ratio" was created by John Ehlers and published in the book "Rocket Science for Traders", pg.87-88.

Calculates Brokerage, Commission or Slippage based on the Input on the strategy Tester

The Momentum-based Adaptive Channel is a version of the adaptive channel based on the Euclidean distance. It is designed to adapt according to the dynamic market as needed.

A collection of useful string manipulation functions.

Buy Sell on your price, Choose Market order, Pending Limit order or Pending Stop Order

macd divergence and rsi filter

Colored Candlestick exemplifying a gradient. It was somewhat hard to find a good working example of DRAW_COLOR_CANDLES that was understandable, most of the comments were useless, and the documentation lacks to even specify the plot limitations (PLOT_COLOR_INDEXES being limited to 64 in length, [0; 63]) or which order the functions should be called.

closing partially script and Stop loss to Break Even point

Risk Reward Tool calculates Risk reward like 1:2 1:3 1:4 and 1:5

This oscillator can be used as a handle to judge a Moving Average's trend speed, based on this specific product's past trend history.

This script draws Fibonacci Expansion OBJ_EXPANSION with options to add your own custom values

This script draws Fibonacci Fan OBJ_FIBOFAN with options to add your own custom values

This indicator is used to have a sense of and distinguish a product's statistical property: Moving Average Speed

This script draws Fibonacci Retracement OBJ_FIBO with options to add your own custom values

Notifies you at your specified Chart Time Indicator can be used to set alarm at a specified time on the chart.

Shows Symbol name, percentage change of price from last day, and Time Time has input options, You can select GMT, LocalTime or TradeServerTime

Aquarium Canvas Background for Chart This script adds cool live canvas background on the chart like aquarium

Sometime we have to work with Custom Angles based trendline for price action analysis e.g. 45 degree angle is considered more important for up or down trend. This indicator will help you by drawing a trendline which will match your custom angle on last input number of bars

Checks if Metatrader5 Terminal is connected to Internet or not. The expert will Print a message for the connectivity status

This Indicator will show the Amplitude [Minimum; Maximum] of a given period and can act as a substitute of the ATR indicator. The indicator can be used to observe volatility and the force of past swings, useful to determine excesses that will possibly be reversed or repeated, given that the user has knowledge to complement with volume or standard-deviation strategies. It is suggested a period of 55200 at M1 or 2400 at H1 (meaning 40 sessions of 23hs each), or any period that complements your strategy.

Building good trading habits by seeing things in terms of percentage not in terms of money.

Binance Futures Header file and EA sample.

Binance Spot Header file and EA sample.

Extend of CFile class to work with the .set extension file which terminal will produce when the Input/Optimisation is saved.

This EA can Calculate each trade volume base on received TP and SL Prices and Risk percent of account in each trade.

Catching the extreme change on candle.

For MT5, When Press the Button, it will delete all STOP LOSS and TAKE PROFIT applied to Current Open Market positions. For All Symbols. The panel is based on the CDialog class, works for all symbols