Re: custom_widget example not working

[Immanuel Scheerer <scheerei in tum de>]

> > Hi,
> >
> > i'm trying to create a custom widget. As a starting point I wanted to look
> > at
> > the example in examples/book/custom/custom_widget. But when I run the
> > example
> > the custom widget is not displayed.
> >
> > Has anyone made the same experience? What could be the cause for that?
>
>
> Yes, it's a new example, and I haven't got it working yet. I welcome help.

I found several postings about custom widgets. The examples of working widgets 
did not derive from Gtk::Widget but from a non abstract widget (e.g. 
Gtk::DrawingArea).

Gtk::Widget is designed as a wrapper for an underlying GtkWidget. If you 
subclass Gtk::Widget directly, is it possible that no valid 'gobject_' is 
associated? If that is true, the only possibility to create a custom widget is 
to overwrite all important functions or to create a minimal GtkWidget for wrapping.

By the way, where is 'gobject_' defined? I couldn't find the declaration.