GTK3-Class Extensions not possible

[ulli bei Unity]

Hello,

for some reasons I extend ruby GTK3 class with some functions. This works

very well with ruby-gtk3 2.2.5-4 build1. With ruby-gtk 3.2.4-1 I get
always the following error:

comboboxtext_mod.rb:8: warning: previous definition of ComboBoxText was here
Traceback (most recent call last):
comboboxtext_mod.rb:31:in `<main>': undefined method `set_names' for
#<Gtk::ComboBoxText:0x5628eabeb0e0 ptr=0x5628eb0102c0> (NoMethodError)
Did you mean?  set_name


Cheers


#!/usr/bin/env ruby


require "gtk3"
require "pry"


class Gtk::ComboBoxText

    def set_names aL
        aL.each{|x| self.append_text x}
    end

end



if str = Gtk.check_version(3, 10, 7)
  puts "This sample requires GTK+ 3.10.7 or later"
  puts str
  exit
end

window = Gtk::Window.new("Gtk::ComboBox sample")
window.signal_connect("destroy") {Gtk.main_quit}

#
# Text only
#
@combo1 = Gtk::ComboBoxText.new()  #(:entry => true)
   @combo1.set_names ["foo", "bar", "fuga", "hoge"]
    @combo1.active = 1

@combo1.signal_connect("changed") do

  @combo1 = Gtk::ComboBoxText.new
   @combo1.set_names ["moon", "mars"]
    @combo1.active = 0
    @combo1.remove_all
end

button = Gtk::Button.new(:label => "close")
button.signal_connect("clicked") do
  @combo1.remove_all
  #Gtk.main_quit
end


# Show main window
vbox = Gtk::Box.new(:vertical)
vbox.add(@combo1)
vbox.add(button)
window.add(vbox).show_all

Gtk.main



Unsubscribe: <mailto:ruby-talk-***@ruby-lang.org?subject=unsubscribe>
<http://lists.ruby-lang.org/

[Kouhei Sutou]

Hi,

In <da1768cc-8ec5-6503-b4fa-***@unitybox.de>
"GTK3-Class Extensions not possible" on Fri, 16 Nov 2018 19:48:43 +0100,

Post by ulli bei Unity
for some reasons I extend ruby GTK3 class with some functions. This
works very well with ruby-gtk3 2.2.5-4 build1. With
comboboxtext_mod.rb:8: warning: previous definition of ComboBoxText was here
comboboxtext_mod.rb:31:in `<main>': undefined method `set_names' for
#<Gtk::ComboBoxText:0x5628eabeb0e0 ptr=0x5628eb0102c0> (NoMethodError)
Did you mean?  set_name

gtk3 gem generates bindings at run-time. And it's occurred
when you touch methods or classes under the Gtk namespace
for the first time.

Your script works with the modification:

Gtk::ComboBoxText # Add this line or touch other methods or
# classes such as Gtk.check_version
# (Gtk::Version.or_later? is better than
# Gtk.check_version.)
class Gtk::ComboBoxText
def set_names aL
aL.each{|x| self.append_text x}
end
end

Thanks,