From: Kevin Redon <kevredon@...>
Date: 2009-04-22T05:33:40+09:00
Subject: gtk container add/remove malfunction

i'm trying to remove and add a widget to a container when an event
occur. removing and adding works outside the event, but only removing
works within

list = Gtk::ComboBox.new

list.signal_connect("changed") do
  @options_list.each do |child|
    @options_list.remove child
  end
  @options_list.pack_start_defaults(Gtk::Label.new("hello"))
  # does only remove the label, but no new added
end

#~~~~~~~

# this works, the hello label is there
@options_list = Gtk::VBox.new(false,5)
@options_list.pack_start_defaults(Gtk::Label.new("hello"))
@options_list.each do |child|
  @options_list.remove child
end
@options_list.pack_start_defaults(Gtk::Label.new("hello"))
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