Thanks Rene for examples and explanation. I meant by foreign classes exactly what you said, the classes which do not depend/inherit from ROOT-aware classes. The example you point me is very trivial. I can load my classes in CINT and do some operations, but I need something more. I need to know is it possible to create a dictionary/tree/ntuple with my classes, write out this ROOT object and read it back without loading back my class? I don't want to create an ntuple and fill its fields from data member of my class. I want to put in a tree/dictionary my class as it is. I need to know is it possible to embed my classes into ROOT without inheritance of ROOT into my classes? Could you please tell me about it. Thank you, Valentine. On Thu November 6 2003 03:35, Rene Brun wrote: > Hi Valentine, > > It is not exactly clear what you are asking. > > We use the terminology "foreign class" in ROOT to describe classes > not instrumented at all with ROOT includes or macros. > Support for such classes has been introduced about one year ago > and it does not require any special documentation. > You can produce your dictionaries, use the I/O sub-system and call > these classes from the interpreter. To get the dictionary, you run rootcint > on these classes like for ROOT-aware classes. > In the attachement, you will find a small tar file with two classes A and B > and the procedure to create the dictionary, compile and create a shared > lib. > > Obviously foreign classes do not provide the full functionality that you > find in ROOT instrumented classes (TObject functionality). > The support for foreign classes was important to facilitate I/O > and interactivity with external class libraries that you cannot modify. > > Rene Brun > > Valentine Kouznetsov wrote: > > Hi, I'm looking for any documentation about foreign classes in ROOT. > > Any examples, docs, notes, list of classes, class implementations. > > I would appreciate if someone briefly summarize their current status. > > Thank you, > > Valentine.
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