Re: Two warnings when creating a TreeStore

[José Alburquerque <jaalburquerque cox net>]

Murray Cumming wrote:
> On Thu, 2007-09-13 at 11:15 -0400, Jos�lburquerque wrote: 
>   
> > As far as gtkmm and inheritance, I found that if I use something like 
> > TreeModelColumn<MyBaseClass> in a TreeModelColumnRecord, derived members 
> > of MyBaseClass only use the virtual methods of the base class (not the 
> > derived class!), but if I use something like 
> > TreeModelColumn<MyBaseClass*>, dereferencing the pointer to the derived 
> > class later, does use the virtual (overridden) method of the derived 
> > class.  Thanks again everyone for your help.
> >     
>
> This is just like putting a Derived instance in a std::list<Base>. The
> Base part will be copied into a new instance in the list, but that
> instance won't be a Derived. This is how copy-by-value works.
>
>   
I see, this is just standard C++.  I'm slightly new to C++ (coming from 
C and then Java), but I *am* learning as I go along. :-)