Creating a new type?

Newbie
1

Hello.
I am trying to create a new type with
Event *event= new Event();
Inside a tree, but I face this error,
error : Unknown type name ‘Event’ .
Can anyone help me to fix it?
Thanks in advance.

2

Hi,

is the Event class known to your code? Is it defined in some header? Is this header included from your code?

3

I load this cxx file
root[] .L /pathto/Event.cxx
And in this case I get warning Event:EventHeader has no streamer or dictionary, data member « fEvtHdr » will not be saved.
Would you please help me what Is the header I should include?

4

Here you can find the relevant documentation: https://root.cern.ch/root/html534/guides/users-guide/AddingaClass.html

5

:+1: @ahesam!

There is an overhauled version of what @ahesam posted:

If it’s helpful (or not helpful!), we would be happy to hear some feedback.