how to get data from calling technical indicator class ?

[stangstang]

      generaly , if you want to get indicator data, you can use the code such as:

   double macd[];
   int macdHandle=iMACD(Symbol(),PERIOD_CURRENT,12,26,9,PRICE_CLOSE);
   ArraySetAsSeries(macd,true);
   CopyBuffer(macdHandle,0,0,100,macd);
   printf("%s  %f  %f   %f",Symbol(),macd[0],macd[1],macd[2]); 

     now  ,l  see class CiMACD that is technical indicator class ,in order to get data from it ,

     i use the code such as:

  

   CiMACD imacd;
   imacd.Create(NULL,PERIOD_CURRENT,12,26,9,PRICE_CLOSE);
   printf("%d ,%d ,%d",imacd.FastEmaPeriod(),imacd.SlowEmaPeriod(),imacd.SignalPeriod());
   printf("%f, %f",imacd.Main(0),imacd.Signal(0));
   return(0);

     

      but the result is that imacd.main(0) and imacd.Signal(0) are empty,i study help mq5 referances and have 

      no resolution ,l wish someone can help me ,thank you ! 

[Test Account]

Please, read this topic (https://www.mql5.com/en/docs/standardlibrary/technicalindicators/cindicators/cindicator) 

You forgot to call method

imacd.Refresh(OBJ_ALL_PERIODS);

You should call Refresh method every time you want to get the most fresh data of indicator.

[stangstang]

alexvd:

Please, read this topic (https://www.mql5.com/en/docs/standardlibrary/technicalindicators/cindicators/cindicator) 

You forgot to call method

You should call Refresh method every time you want to get the most fresh data of indicator.

Thank you very much ,i  feel technical class is easy to use .

l  like mql5!