Read function value from class

[Axtral Fiala]

How to read value of the function CheckPatternAllBullish() in class  CCandlePattern ?

I want to read it inside in void OnTick()

// Print(fican.CheckPatternAllBullish());

Error is  invalid pointer access in 'candlepatterns.mqh' (162,20)

Thanks!

//+------------------------------------------------------------------+


//| Include                                                          |
//+------------------------------------------------------------------+
#include <Expert\Expert.mqh>
#include <candlepatterns.mqh>


ulong                    Expert_MagicNumber        =3434;        // 
bool                     Expert_EveryTick          =false;       // 

//+------------------------------------------------------------------+
//| Global expert object                                             |
//+------------------------------------------------------------------+
CExpert ExtExpert;
CCandlePattern fican;
//+------------------------------------------------------------------+
//| Initialization function of the expert                            |
//+------------------------------------------------------------------+
int OnInit(){
   if(!ExtExpert.Init(Symbol(),Period(),Expert_EveryTick,Expert_MagicNumber)) {//--- failed
      printf(__FUNCTION__+": error initializing expert");   ExtExpert.Deinit();   return(INIT_FAILED);  }
//--- Creating signal
   CExpertSignal *signal = new CExpertSignal;
   if(signal==NULL){                printf(__FUNCTION__+": error creating signal"); ExtExpert.Deinit();   return(INIT_FAILED);  }
   ExtExpert.InitSignal(signal);
   
   CIndicators *indicators = new  CIndicators;
   if(indicators==NULL){                printf(__FUNCTION__+": IND NIJE dignut signal"); ExtExpert.Deinit();   return(INIT_FAILED);  }
   //ExtExpert.InitIndicators(indicators);
   
   //--- Creating filter CMySignalEnvelopes
   //CMySignalEnvelopes *filter0=new CMySignalEnvelopes;
   CCandlePattern *filter0 = new CCandlePattern;      
   if(filter0==NULL){               printf(__FUNCTION__+": error creating filter0");  ExtExpert.Deinit();  return(INIT_FAILED); }
   filter0.MAPeriod(22);
   
     //--- Tuning of all necessary indicators
   if(!ExtExpert.InitIndicators()){  printf(__FUNCTION__+": error initializing indicators"); ExtExpert.Deinit();  return(INIT_FAILED); }
   
   if(!filter0.InitIndicators(indicators)){  printf(__FUNCTION__+": error initializing CC "); ExtExpert.Deinit();  return(INIT_FAILED); }
   filter0.ValidationSettings();
   filter0.InitSignal(signal);
       
   signal.AddFilter(filter0);   //--- Set filter parameters
   
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//| "Tick" event handler function                                    |
//+------------------------------------------------------------------+
void OnTick(){
   ExtExpert.OnTick();
// fican.InitIndicators(indicators);
   fican.CheckPatternAllBullish();
  // Print(fican.CheckPatternAllBullish());
   Print("Read price "+ExtExpert.Low(0)+" O1 "+ExtExpert.Open(1)+" C1 "+ExtExpert.Close(1)+" O2 "+ExtExpert.Open(2));
  }

[William Roeder]

Don't double post Don't triple post

          General rules and best pratices of the Forum. - General - MQL5 programming forum

[nicholish en]

#include <Expert\Expert.mqh>
#include <candlepatterns.mqh>


ulong                    Expert_MagicNumber        =3434;        // 
bool                     Expert_EveryTick          =false;       // 

//+------------------------------------------------------------------+
//| Global expert object                                             |
//+------------------------------------------------------------------+
CExpert ExtExpert;
CCandlePattern *fican;
//+------------------------------------------------------------------+
//| Initialization function of the expert                            |
//+------------------------------------------------------------------+
int OnInit(){
   if(!ExtExpert.Init(Symbol(),Period(),Expert_EveryTick,Expert_MagicNumber)) {//--- failed
      printf(__FUNCTION__+": error initializing expert");   ExtExpert.Deinit();   return(INIT_FAILED);  }
//--- Creating signal
   CExpertSignal *signal = new CExpertSignal;
   if(signal==NULL){                printf(__FUNCTION__+": error creating signal"); ExtExpert.Deinit();   return(INIT_FAILED);  }
   ExtExpert.InitSignal(signal);
   
   CIndicators *indicators = new  CIndicators;
   if(indicators==NULL){                printf(__FUNCTION__+": IND NIJE dignut signal"); ExtExpert.Deinit();   return(INIT_FAILED);  }
   //ExtExpert.InitIndicators(indicators);
   
   //--- Creating filter CMySignalEnvelopes
   //CMySignalEnvelopes *filter0=new CMySignalEnvelopes;
   CCandlePattern *filter0 = new CCandlePattern;      
   fican = filter0;
   if(filter0==NULL){               printf(__FUNCTION__+": error creating filter0");  ExtExpert.Deinit();  return(INIT_FAILED); }
   filter0.MAPeriod(22);
   
     //--- Tuning of all necessary indicators
   if(!ExtExpert.InitIndicators()){  printf(__FUNCTION__+": error initializing indicators"); ExtExpert.Deinit();  return(INIT_FAILED); }
   
   if(!filter0.InitIndicators(indicators)){  printf(__FUNCTION__+": error initializing CC "); ExtExpert.Deinit();  return(INIT_FAILED); }
   filter0.ValidationSettings();
   filter0.InitSignal(signal);
       
   signal.AddFilter(filter0);   //--- Set filter parameters
   
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//| "Tick" event handler function                                    |
//+------------------------------------------------------------------+
void OnTick(){
   ExtExpert.OnTick();
// fican.InitIndicators(indicators);
   fican.CheckPatternAllBullish();
  // Print(fican.CheckPatternAllBullish());
   Print("Read price "+ExtExpert.Low(0)+" O1 "+ExtExpert.Open(1)+" C1 "+ExtExpert.Close(1)+" O2 "+ExtExpert.Open(2));
  }

Try this.

[Axtral Fiala]

nicholishen:

Try this.

You're genius!

Finally, the real answer

Now I can go on

Thank You very much!!

[hhr_rahimi]

nicholish en:

Try this.

Hi. I'm trying to use your suggested code but its not working.

 i get this error in tester journal:

2020.07.14 16:18:11.114   2018.05.01 00:00:00   invalid pointer access in 'candlepatterns.mqh' (156,20)

2020.07.14 16:18:11.114    OnInit critical error

can anyone help?

(problem occured whle  back-testing the same code as above written and the same " candlepatterns.mqh  " which topic started with)