Problem in subclassing and new signals

Desktop Ruby-Gnome 2
1

Hi,

I have a problem with subclassing a widget, when I add new signals to
this widget. See this smal example:

require ‘gtk2’

class Box1 < Gtk::VBox
def initialize data
super false, 2
end
end

class Box2 < Gtk::VBox
type_register
signal_new(:changed, GLib::Signal::RUN_FIRST,
nil, GLib::Type[‘void’], String, Float)
def signal_do_changed foo, bla
end

 def initialize data
     super false, 2
 end

end

b1 = Box1.new ‘foo’
b2 = Box2.new ‘foo’

It throwes the error:

det@datengrab:~/Desktop$ ruby test.rb
test.rb:18:in initialize': wrong number of arguments (2 for 0..1) (ArgumentError) from test.rb:18:ininitialize’
from test.rb:23:in new' from test.rb:23:in’

as long, as I add no new signal to the widget the call to super() works
like expected. With the new signal it fails. Can someone explain to me,
why?

Thanks! detlef

2

It took me a while to figure it out also. The only documentation I found
is in the examples :

line 20-22

So you should write :

 def initialize data
     super :homogeneous => false, :spacing => 2
 end

regards

Simon

3

Am 13.04.2013 12:20, schrieb Simon A.:

It took me a while to figure it out also. The only documentation I found
is in the examples :

line 20-22

So you should write :

  def initialize data
      super :homogeneous =>  false, :spacing =>  2
  end

Ah, I didn’t knew that it works this way. Something learned today :slight_smile:

Thanks a lot! detlef