Re: Two warnings when creating a TreeStore

[José Alburquerque]

Murray Cumming wrote:
> On Thu, 2007-09-13 at 11:15 -0400, José Alburquerque 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. :-)
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