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How to Write an Expert Advisor or an Indicator

MQL5 Source Code Library for MetaTrader 5 - 74

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 iMFISign_HTF_Signal indicator shows a trend direction or a signal generated by the iMFISign indicator at the chosen bar as a graphical object with colored trend indication or deal direction. It also triggers alerts and plays audio signals.

The Exp_ColorX2MA_Digit Expert Advisor is based on the ColorX2MA_Digit indicator color change.

Semaphore arrow signal indicator based on the classic DeMarker oscillator leaving the overbought and oversold areas.

The Exp_ColorJFatl_Digit Expert Advisor is based on the ColorJFatl_Digit indicator color change.

Trading system based on iStochKomposter indicator signals.

The Exp_Chaikin_Volatility_Stochastic Expert Advisor is based on the Chaikin_Volatility_Stochastic indicator color change.

The Chaikin_Volatility_Stochastic indicator with the timeframe selection option available in input parameters.

When analyzing the behavior of the Chaikin Volatility Index, the author of this indicator wondered how it would act if it is modified and if the stochastization process is applied to it.

Trading system based on iWPRSign indicator signals.

Hybrid of the FATL (Fast Adaptive Trend Line) digital filter and analog adaptive averaging JMA — the ColorJFatl indicator that fills the chart space with a colored background and displays the most recent value as a price label with the possibility to round the channel levels up to a required number of digits, as well as displays a price grid with those rounded values.

Trading system based on iRSISign indicator signals.

The ColorJFatl_Cloud_Digit indicator with the timeframe selection option available in input parameters.

Trading system based on Directed_Movement_Candle indicator signals.

The Directed_Movement indicator implemented as a sequence of candlesticks.

The Exp_ColorRsiMACD Expert Advisor based on the signals taken from the ColorRsiMACD histogram.

The ColorRsiMACD indicator with the timeframe selection option available in input parameters.

The MACD histogram based on the difference of the RSI oscillator and its averaging.

Hybrid of the FATL (Fast Adaptive Trend Line) digital filter and analog adaptive averaging JMA - the ColorJFatl indicator that fills the chart space with a colored background and displays the most recent value as a price label with the possibility to round the channel levels up to a required number of digits.

The ColorJFatl_Digit indicator with the timeframe selection option available in input parameters.

Semaphore arrow signal indicator based on the classic Money Flow Index oscillator leaving the overbought and oversold areas.

The ColorJFatl_Cloud indicator with the timeframe selection option available in input parameters.

Smoothed fast digital filter ColorJFatl that displays the most recent value as a price label with the possibility to round the channel levels up to a required number of digits.

Indicator of price change speed.

The JFatl smoothed fast trend indicator which fills the chart space with a colored background.

The ColorX2MA_Cloud indicator with the timeframe selection option available in input parameters.

Semaphore arrow signal indicator based on the classic Williams’ Percent Range oscillator leaving the overbought and oversold areas.

Semaphore arrow signal indicator based on the classic RSI oscillator leaving the overbought and oversold areas.

The ColorX2MA_Digit indicator with the timeframe selection option available in input parameters.

Universal moving average that fills the chart space with a colored background and displays the most recent value as a price label with the possibility to round the channel levels up to a required number of digits, as well as displays a price grid with those rounded values.

Universal moving average that fills the chart space with a colored background and displays the most recent value as a price label with the possibility to round the channel levels up to a required number of digits.

Universal moving average that displays the most recent value as a price label with the possibility to round the channel levels up to a required number of digits.

Universal moving average which fills the chart space with a colored background. The moving average itself serves as the color separation line.

The Expert Advisor enables and disables the "AutoTrading" button at a certain time and closes all opened positions on the account once the specified period of time expires.

The ExMassV2 indicator with the timeframe selection option available in input parameters.

The ExVolV2 indicator with the timeframe selection option available in input parameters.

A modification of the popular ADX indicator.

The ExTrendV2 indicator with the timeframe selection option available in input parameters.

The ExVolV2 calculates the difference between the total sum of bodies of growing and falling candlesticks on a given interval.

The ExMassV2 indicator helps to evaluate market fluctuations.

The ytg_Trend indicator with the timeframe selection option available in the input parameters.

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