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How to Write an Expert Advisor or an Indicator

MQL5 Source Code Library for MetaTrader 5 - 55

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 CandleTrend_x10 indicator shows price movement from ten different timeframes.

Semaphore signal indicator based on the BullsBears indicator algorithm.

The BinaryWave indicator with additional trend strength indication using colored dots based on the standard deviation algorithm.

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

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

The Beginner_HTF_Signal indicator shows a trend direction or a signal generated by the Beginner indicator.

The BWImp-T01 indicator with additional trend strength indication using colored dots based on the standard deviation algorithm.

The BWImp-T01 indicator with the timeframe selection option available in the input parameters.

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

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

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

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

The Gaus_MA indicator with additional trend strength indication using colored dots based on the standard deviation algorithm.

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

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

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

The Begin_Trend_v02 indicator with the timeframe selection option available in the input parameters.

The 2pbIdealXOSMA indicator with the timeframe selection option available in the input parameters.

The indicator shows convergence/divergence of the fast and slow trails.

The Begin_Trend_v01 indicator with the timeframe selection option available in the input parameters.

Normalized version of the Begin_Trend_v01 indicator.

Simple trend indicator based on three Moving Averages.

Simple semaphore signal indicator for scalping.

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

Trend indicator based on Average True Range and Standard Deviation.

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

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

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

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

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

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

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

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

The QQE_HTF_Signal indicator shows the trend direction or the signal based on the QQESign indicator.

The ForexOFFTrend_HTF_Signal indicator shows the trend direction or the signal based on the ForexOFFTrendSign indicator.

Semaphore arrow signal indicator based on the ForexOFFTrend oscillator.

Trading signals module based on Ozymandias.

Ozymandias with price band width settings and an additional feature for displaying on other timeframes.

The indicator draws candlesticks of a larger timeframe as color filled rectangles based on the QQECloudX indicator values.

Semaphore arrow signal indicator based on the QQE oscillator.

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