Re: adding widget to vbox created by glade

[Robert Pearce <rob bdt-home demon co uk>]

On Sun, 2 Dec 2007, Gezim Hoxha <gezimetc shaw ca> wrote :
> So, now this code works:
>       Gtk::VolumeButton *my1223 = new Gtk::VolumeButton;
>       myvbox->pack_end(*my1223);
>       my1223->show();
>
> but this doesn't:
>       Gtk::VolumeButton my1223;
>       myvbox->pack_end(my1223);
>       my1223.show();
>
> and my question is, why doesn't this last code work?
Is this code in a function / method? Because if so the explanation is 
simple. The second form creates a _local_ _temporary_ Gtk::VolumeButton 
object and packs then shows it. And then the function / method 
terminates and all local objects are destroyed, including the widget.

The first form makes the widget on the heap and only destroys a pointer 
to it.
--
Rob Pearce                       http://www.bdt-home.demon.co.uk

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