From: Ned Konz <ned@...>
Date: 2001-08-20T07:37:07+09:00
Subject: [ruby-talk:19996] Re: Ruby/Gtk: caveats/help on use of rbbr.rb

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

-- 
Ned Konz
currently: Stanwood, WA
email:     ned@bike-nomad.com
homepage:  http://bike-nomad.com