From: Albert Wagner <alwagner@...>
Date: 2001-08-20T07:44:07+09:00
Subject: [ruby-talk:19997] Re: Ruby/Gtk: caveats/help on use of rbbr.rb

Thanks, Ned.  I'll give this a try.

On Sunday 19 August 2001 17:37, you wrote:
> On Sunday 19 August 2001 02:56 pm, you wrote:
> > I am re-evaluating Ruby/Gtk.  I assume that the gtk-brows, talked of in
> > the docs, is really rbbr.rb.  I get messages similar to:
> >
> > $ ruby rbbr.rb
> > rbbr.rb:1249:in `main': file gtkwidget.c: line 3242
> > (gtk_widget_set_state): assertion `widget != NULL' failed. (Gtk::Error)
> >         from rbbr.rb:1249:in `main'
> >         from rbbr.rb:1255
> >
> > There is no gtkwidget.c in my installation.  Does this indicate that
> > rbbr.rb does not work with ruby-1.6.4 and ruby-gtk-0.25?
>
> gtkwidget.c is part of the GTK source distribution, not part of the Ruby
> gtk stuff. It looks like there is just a bug in rbbr.rb that's causing it
> to send NULL widgets to gtk_widget_set_state. This is called by set_state,
> though it's probably being called indirectly (by something inside the GTK
> libs). I did this, which seemed to help (though it doesn't print any
> errors...)
>
> def self.main
>     window = BrowserWithDocumentViewer.new
>     window.set_title("Ruby Browser + Document Viewer")
>     window.show_all
> 	begin
> 		Gtk.main
> 	rescue
> 		STDERR.puts "exception $!"
> 		retry
> 	end
>   end