Re: [inti] entry fun

Bo Lorentsen wrote:

> Gtk::Entry *entry = new Gtk::Entry();
>
>> Gtk::Editable *editable = dynamic_cast<Gtk::Editable*>(entry);
>
>
> Dynamic cast are only needed when downcasting, right ?
>
As far as I'm aware, dynamic casting is always required when 
upcasting/downcasting if multiple inheritance is used. This is because 
with multiple inheritance objects have several addresses. Using a 
dynamic cast ensures that pointer returned actually does point to the 
beginning of the multiplely inherited base object's memory.

Jeff Franks.


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