Hi Miha, The message from the compiler is clear. Both TF1 and TDataSet derive from TObject. Do not mix apples and oranges. Use TDataSet as a member of your class instead. Rene Brun On Tue, 26 Feb 2002 miha.puc@marvin.fmf.uni-lj.si wrote: > Hi! > I have a class > class TModelFunction : public TF1, public TDataSet { ..... > > and when compiling I get messages like > > TModelFunction.cxx:121: type `TObject' is ambiguous base class for type > `TModelFunction' > TModelFunction.cxx:121: type `TModelFunction' is ambiguous baseclass of > `TObject' > > line 121 is: > _Foo = (TModelFunction *) (fList->After(_Foo)); > where _Foo is a pointer to TModelFunction object. > > What shall I do? > > Regards, > Miha > -- > >
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