gistfile1.txt

#!/usr/bin/env ruby

# demos a problem between ruby-gnome2-0.19.0 and datamapper-0.10.0 (also 0.9.11)
# basically if a datamapper model is used, then created Gtk::Window objects will
# be drawn empty (i.e., the windows are blank looking).
require 'rubygems'

gem 'dm-core', '=0.9.11'
#gem 'dm-core', '=0.10.0'

require "gtk2"
require 'dm-core'
require 'dm-yaml-adapter'

# DataMapper.setup(:default, 'sqlite3::memory')
DataMapper.setup(:default, {:adapter => 'yaml', :directory => 'db'})

# window properly displays when USE_MODEL is false,
# the window is blank when USE_MODEL is true.
USE_MODEL = true
# USE_MODEL = false

if USE_MODEL
  class Person
    include DataMapper::Resource
    property :id,   Serial
    property :name, String, :length => 80
  end
  # Using the model is what triggers the error
  DataMapper.auto_migrate!
#   Person.auto_migrate!
#   Person.auto_upgrade!
  who = Person.create(:name => 'Roy')
  puts Person.first.name
end

# Gtk.init
window = Gtk::Window.new
window.signal_connect('destroy') {Gtk.main_quit}
frame = Gtk::Frame.new('Content Frame')
frame.add Gtk::Label.new("Howdy")
window.add frame
window.show_all
Gtk.main