RE: settting the background and foreground

[Mark Roberts <gtkmm manumark de>]

Dear Randy,

>   Glib::RefPtr<Gdk::Window> win = get_window();
>   Glib::RefPtr<Gdk::GC> some_gc = Gdk::GC::create(win);

...

> The program console showed:
>
> (Hello:2839): Gdk-CRITICAL **: gdk_gc_new: assertion `drawable != NULL'
> failed

Surely the error message says exactly what it was saying last week, namely 
that your ref ptr 'win' contains a NULL, which means your program fails at 
line one. Concentrate on that. When that is solved the GC-creation will 
work, and then the rest of the program becomes interesting.

Good luck!
Mark