From: Stefano Crocco <stefano.crocco@...>
Date: 2007-10-01T16:44:23+09:00
Subject: Re: Gtk not work

Alle luned狸 1 ottobre 2007, Pokkai Dokkai ha scritto:
> my os --> ubuntu 7.04
> my ruby--> ruby 1.8.5 (2006-08-25) [i486-linux]
>
> recently i download "ruby-gtk2-0.16.0" and install it
>
>
> in terminal...
>
> mani@user-UBUNTU704:~$ vim welcome.rb
>
> require "gtk2"
> include Gtk
> def quick_message(message)
>     # Create the dialog
>     dialog = Gtk::Dialog.new("Message",
>                              $main_application_window,
>                              Gtk::Dialog::DESTROY_WITH_PARENT,
>                              [ Gtk::Stock::OK,
> Gtk::Dialog::RESPONSE_NONE ])
>     # Ensure that the dialog box is destroyed when the user responds.
>     dialog.signal_connect('response') { dialog.destroy }
>     # Add the message in a label, and show everything we've added to the
> dialog.
>     dialog.vbox.add(Gtk::Label.new(message))
>     dialog.show_all
> end
> quick_message("welcome")
> puts("checking")
>
> mani@user-UBUNTU704:~$ ruby welcome.rb
> checking
> mani@user-UBUNTU704:~$
>
> what is wrong here...
>
> thank you for help

Your code lacks a call to the method which starts the event loop, that is 
Gtk.main. Adding it to the end of your program should make it work.

You may not be aware of the fact that closing the dialog (either clicking the 
button or using the close button on the dialog's frame) doesn't quit your 
application, as it is now. To do so, you should connect the dialog destroy 
signal with the method Gtk.main_quit: in the method quick_message, add the 
code

dialog.signal_connect('destroy'){Gtk.main_quit}

at any point after the creation of the dialog and it should work.

I hope this helps

Stefano