MQL5 Wizard - Trading signals based on Morning Star/Evening Star + MFI - MetaTrader 5 Expert











There is the book "Strategies of the Best Traders " (in Russian), where many trading strategies are considered, we will focus on reversal candlestick patterns, represented by Stochastic , CCI , Micro Institutions and RSI oscillators.
The best way is to create a separate class derived from Expert Signal for checking the formation of candlestick patterns. For the confirmation of trading signals generated by candlestick patterns, it is enough to write a class derived from CCandlePattern and add in it the necessary functionality (for example, confirmation by oscillator).
Here, we will consider signals based on the Morning Star/Evening Star (Morning Doji/Evening Doji) reversal candlestick pattern and confirm the Micro Financial Institutions indicator in the following way. The trading signals module is based on the CC candle pattern class, which is a simple example of creating trading signals using candlestick patterns.
1. “Morning Star” and “Evening Star” Reversal Candlestick Patterns
1.1.Morning Star
This pattern signals a reversal in a downtrend and consists of three candles (Figure 1). After the long black candle, there is a candle with a smaller body (the color does not matter) that is outside the body of the black candle. A smaller candle body means bulls and bears have equal power and the market is ready to change trend.
The third candle of the pattern is a bullish candle, its body does not overlap with the body of the second candle, and the closing price is within the body of the first (bearish) candle. The candlesticks generated by the model are also plotted in Figure 1.
In the case where the second candle is a Doji candle, the model is named "Morning Star Doji".

Figure 1. “Morning Star” and “Morning Star Doji” candlestick patterns
The recognition of the "Morning Star" pattern is implemented in the CheckPatternMorningStar() and CheckPatternMorningDoji() methods of the CC candle pattern class:
//+------------------------------------------------------------------+ //|Check the formation of the "Morning Star" pattern | //+------------------------------------------------------------------+ Boolean valueCCandlePattern ::CheckPatternMorningStar() { //--- Morning Star if ((open( 3 )-close( 3 )>average body( 1 )) && // bearish candle whose real body is greater than the average body of the candle ( mathematical antibody (close( 2 )-open( 2 )))( 1 ) The closing price of the last completed candle is higher than the center of the first candle Return ( True ) ; // --- Return ( False ) ; } //+------------------------------------------------------------------+ //|Check the formation of the "Morning Doji" pattern | //+------------------------------------------------------------------+ BooleanCCandlePattern ::CheckPatternMorningDoji() { //--- Morning Doji if ((open( 3 )-close( 3 ))>average body( 1 )) && // bearish candle with candle body greater than average candle body (average body( 2 ) 1 )* 0.1 ) && // The real body of the second candle is very small (Doji) (Close( 2 )<Close( 3 )) && //The close of the second candle is lower than the close of the first candle (Open( 2 )<Open( 3 )) && //The open of the second candle is lower than the open of the first candle (Open( 1 )>Close( 2 )) && //Upward gap of the last completed candle (Close( 1 ) )>Close( 2 ))) //The closing price of the last completed candle is higher than the closing price of the second candle return ( true ); //--- return ( false ); }
CheckCandlestickPattern(CANDLE_PATTERN_MORNING_STAR) and CheckCandlestickPattern(CANDLE_PATTERN_MORNING_DOJI) methods CC Candlestick Pattern class are used to check the formation of "Morning Star" and "Morning Star Doji" candlestick patterns.
1.2.Evening Star
This pattern indicates a reversal in an uptrend and consists of three candles (Figure 2). After the long white candle, there is a candle (color is not important) with a very small body, outside the body of the white candle. A smaller candle body means bulls and bears have equal power and the market is ready to change trend.
The third candle of the pattern is a bearish candle, its body does not overlap with the body of the second candle, and the closing price is within the body of the first (bullish) candle. The candlesticks generated by the model are also plotted in Figure 2.
For the case where the second candle is a Doji candle, the model is named "Evening Doji Star".

Figure 2. “Evening Star” and “Evening Doji” candlestick patterns
Here's how to identify the "Evening Star" and "Evening Doji" patterns:
//+------------------------------------------------------------------+ //|Check the "Formation of Evening Stars" pattern | //+------------------------------------------------------------------+ BooleanCCandlePattern ::CheckPatternEveningStar() { //--- Evening Star if ((Close( 3 )-Open( 3 ))>Average Body( 1 )) && // Bullish Candle with Real Body Above Average Body ( Mathematical Ab (Close( 2 )-Open( 2 )))( 1 ) The closing price of the last completed candle is below the center of the first candle Return ( True ) ; // --- Return ( False ) ; } //+------------------------------------------------------------------+ //|Check the "Formation of Evening Cross Stars " pattern | //+------------------------------------------------------------------+ BooleanCCandlePattern ::CheckPatternEveningDoji() { //--- Evening Cross if ((close( 3 )) - open( 3 )>average body( 1 )) && // Bullish candle with body above average (average body( 2 ) 1 )* 0.1 ) && // The real body of the second candle is very small (Doji) (Close( 2 )>Close( 3 )) && //The close of the second candle is higher than the close of the first candle (Open( 2 )>Open( 3 )) && //The open of the second candle is higher than the open of the first candle (Open( 1 )<Close( 2 )) && //The downward gap of the last completed candle (Close(2)) 1 ) < close ( 2 ))) // The closing price of the last completed candle is lower than the closing price of the second candle return ( true ); // --- return ( false ); }
CheckCandlestickPattern(CANDLE_PATTERN_EVENING_STAR) and CheckCandlestickPattern(CANDLE_PATTERN_EVENING_DOJI) methods CC Candlestick Pattern class are used to check the formation of "Evening Star" and "Evening Doji Star" candlestick patterns.
2. Trading signals confirmed by the MFI indicator
The closing of an open position depends on the value of the MFI indicator. This can be done in two situations:

Figure 3. “Morning Star” pattern confirmed by the MFI indicator
2.1. Open long position/close short position
The formation of the "Morning Star" pattern must be determined by the Micro Financial Institutions indicator: MFi(1)<40 (the MFI indicator value of the last completed bar must be less than 40).
Short positions must be closed if the MFI indicator crosses above key levels (70 or 30).
//+------------------------------------------------------------------+ //|Check the conditions for entering and exiting the market | //| 1) Enter the market (open long position, result = 80) | //| 2) Market Exit (Close Position, Result=40) | //+------------------------------------------------------------------+ integerCMS_ES_MFI ::longcondition() { Integer result = 0 ; //--- idx can be used to determine the Expert Advisor working mode //--- idx=0 - in this case the EA checks the trading conditions on every price move //--- idx=1 - in this case the EA only checks the trading status of the news bar integer idx =StartIndex(); //--- checks the conditions for opening a long position //--- Morning star pattern is formed and MFI < 40 if (check candlestick pattern (CANDLE_PATTERN_MORNING_STAR) && (MFI( 1 ) < 40 )) Result = 80 ; //--- check closing conditions //--- Signal lines for overbought/oversold levels are crossed (30 up, 70 up) if (((MFI( 1 )> 30 ) && (MFI( 2 )< 30 )) || ((MFI( 1 )> 70 ) && (MFI( 2 )< 70 ))) result = 40 ; //--- return result return (result); }
2.2. Open short position/close long position
The formation of the "Evening Star" pattern must be determined by the Micro Financial Institutions indicator: MFI(1)>60 (the MFI indicator value of the last completed bar must be greater than 60).
Long positions must be closed if the MFI indicator crosses above key levels (70 or 30).
//+------------------------------------------------------------------+ //|Check the conditions for entering and exiting the market | //| 1) Enter the market (short position, result = 80) | //| 2) Market Exit (Close Position, Result=40) | //+------------------------------------------------------------------+ Integer CMS_ES_MFI::ShortCondition() { Integer result = 0 ; //--- idx can be used to determine the Expert Advisor working mode //--- idx=0 - in this case the EA checks the trading conditions on every price move //--- idx=1 - in this case the EA only checks the trading status of the news bar integer idx =StartIndex(); //--- checks the conditions for opening a short position //--- Evening Star pattern is formed and MFI>60 if (check candlestick pattern (CANDLE_PATTERN_EVENING_STAR) && (MFI( 1 )> 60 )) Result = 80 ; //--- check closing conditions //--- Signal lines for overbought/oversold levels are crossed (70 up, 30 down) if (((MFI( 1 )> 70 ) && (MFI( 2 )< 70 )) || ((MFI( 1 )< 30 ) && (MFI( 2 )> 30 ))) result = 40 ; //--- return result return (result); }
2.3. Use the MQL5 Wizard to create an Expert Advisor
The CMS_ES_MFI class is not included in the standard library classes, to use it you need to download the ams_es_mfi.mqh file (see attachment) and save it to client_terminal_data_folder\MQL5\Include\Expert\Signal\MySignals. The same operation should be performed for the candlepatterns.mqh file. After restarting MetaEditor, you can use it in the MQL5 Wizard.
Create Expert Advisor Launch MQL5 Wizard :

Figure 4. Creating an Expert Advisor using the MQL5 Wizard
Let's specify the name of the Expert Advisor:

Figure 5. General properties of EA trading
After that we need to choose the trading signal module to use.

Figure 6. Signal properties of EA trading
In our case we use only one trading signals module.

Figure 7. Signal properties of EA trading
Added trading signals module:

Figure 8. Signal properties of EA trading
You can choose any trailing attribute, but we will use "Unused Trailing Stop":

Figure 9. Tracking properties of Expert Advisor
Regarding the money management properties, we will use "Fixed Volume Trading":

Figure 10. Money management attributes of EA trading
By pressing the "Finish" button we will get the code of the generated Expert Advisor in Expert_AMS_ES_MFI.mq5, which will be saved in terminal_data_folder\MQL5\Experts\.
Default input parameters of the generated Expert Advisor:
//--- Main signal input Input integer Signal_ThresholdOpen = 10 ; //Open signal threshold[0...100] Input integer Signal_ThresholdClose = 10 ; // Close signal threshold [0...100] Enter double Signal_PriceLevel = 0.0 ; // price level at which to execute the trade Enter double Signal_StopLevel = 50.0 ; // Stop loss level in pips Enter double Signal_TakeLevel = 50.0 ; // Take profit level (in pips)
Must be replaced with:
//--- Main signal input Input integer Signal_ThresholdOpen = 40 ; //Open signal threshold[0...100] Input integer Signal_ThresholdClose = 20 ; // Close signal threshold [0...100] Enter double Signal_PriceLevel = 0.0 ; // price level at which to execute the trade Enter double Signal_StopLevel = 0.0 ; // Stop loss level in points Enter double Signal_TakeLevel = 0.0 ; // Take profit level (in pips)
Signal_ThresholdOpen/Signal_ThresholdClose input parameters allow specifying threshold levels for opening and closing positions.
In the code of the LongCondition() and ShortCondition() methods of the trading signal class, we specify the fixed value of the threshold:
The Expert Advisor generates opening and closing positions by the MQL5 Wizard using "votes" in the Trading Signals module. The vote of the main module (which acts as a container and consists of all added modules) is also used, but its LongCondition() and ShortCondition() methods always return 0.
The voting results from the main module are also used for "voting" averaging. In our case we have: main module + 1 trading signals module, so we need to take this fact into account when setting the thresholds. Therefore, ThresholdOpen and ThresholdClose must be set to 40=(0+80)/2 and 20=(0+40)/2.
The value of the Signal_StopLevel and Signal_TakeLevel input parameters is set to 0, which means that the position will be closed only if the closing conditions are met.
2.4. Historical backtest results
Let us consider Expert Advisor's backtest on historical data (EURUSD H1, test period: 2010.01.01-2011.03.16, PeriodMFI=49, MA_period=3).
When creating the EA, we used a fixed trading volume ( fixed lot size for trading , 0.1) and did not use the trailing stop algorithm ( trailing was not used ).

Figure 11. EA trading test results based on Morning Star/Evening Star + MFI
The best set of input parameters for the Strategy Tester MetaTrader 5 client can be found using the following command.
The code for the Expert Advisor created by the MQL5 Wizard is attached in Expert_ams_es_mfi.mq5.
Attachment download
📎 acandlepatterns.mqh (20.34 KB)
📎 acms_es_mfi.mqh (7.99 KB)
📎 expert_ams_es_mfi.mq5 (6.63 KB)
Source: MQL5 #323
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