Re: [gtkmm] how to use Glib::Object

[Daniel Elstner <daniel elstner gmx net>]

On Fre, 2002-12-20 at 22:52, triendl klaus wrote:
> hi,
> 
> i have a class derived from Glib::Object to enable reference counting in order to use it with Glib::RefPtr.
> 
> the following warning appears everytime i create a Glib::RefPtr<MyObject>:
> glibmm-WARNING **: Object::Object(): Did you really mean to call this?
> 
> is it bad practice to use the standard ctor and how to use the other ctors?

You are not supposed to derive from Glib::Object at all, unless you want
to implement a wrapper for a C interface based on GObject.

There are plenty of smart pointer implementations around you could use,
for instance boost::shared_ptr<>.  If you fear the idea of adding yet
another dependency to your application then implement one yourself (it's
quite simple actually) or just copy'n'paste existing code.

You could have a look at Util::SharedPtr<> in my app regexxer if you
like.  It's an intrusive implementation that requires the managed types
to be derived from Util::SharedObject<>, but on the other hand it's
pretty simple and efficient.  If you want something more flexible use
boost::shared_ptr<>.

--Daniel