[Glade-users] libglademm and DrawingArea

[Michael Kleiber]

> So why is my graphics context = NULL although I implemented the 
> on_realize function just as in the tutorial?:
> void GCurveDrawingArea::on_realize()
> {
>   // We need to call the base on_realize()
>   Gtk::DrawingArea::on_realize();
> 
>   // Now we can allocate any additional resources we need
>   Glib::RefPtr<Gdk::Window> window = get_window();
>   gc_ = Gdk::GC::create(window);
>   window->set_background(red_);
>   window->clear();
>   gc_->set_foreground(blue_);
>   std::cout << "Drawing Area realized!" << std::endl;
> }

Ok - I found the problem myself - the on_realize function is not called! 
Why?? The drawing works as it is supposed to now but where would I do 
the initialization of the GC if not in the on_realize method?