From: Stefano Crocco <stefano.crocco@...>
Date: 2009-01-21T19:02:57+09:00
Subject: Re: Using qui rather than rbuic for qtdesigner .ui files

Alle mercoledì 21 gennaio 2009, Stefano Crocco ha scritto:
> Alle lunedì 19 gennaio 2009, David Brunell ha scritto:
> > One other question...what about Qt4?  I think I need rbuic4 if I am
> > going to pre-compile the ui.  Is there a qui4 for dynamic loading?
>
> The following should work using a recent svn revision from kdebindings.
> However, it doesn't because findChild fails. I think it's a bug and I'll
> try to contact the developers to
>
> require 'Qt4'
> require 'qtuitools'
>
> class Dlg < Qt::Dialog
>
>   slots 'test()'
>
>   def initialize parent = nil
>     super
>     file = Qt::File.new File.expand_path('~/temp/test_ui.ui')
>     file.open(Qt::File::ReadOnly)
>     loader = Qt::UiLoader.new
>     @widget = loader.load file, self
>     file.close
>     self.layout = Qt::VBoxLayout.new self
>     layout.add_widget @widget
>     @close_btn = @widget.findChild(Qt::PushButton, 'close_btn')
>     @test_btn = @widget.findChild(Qt::PushButton, 'test_btn')
>     connect @close_btn, SIGNAL('clicked()'), Qt::Application.instance,
> SLOT('close()')
>     connect @test_btn, SIGNAL('clicked()'), self, SLOT('test()')
>   end
>
>   def test
>     puts "testing"
>   end
>
> end
>
> app = Qt::Application.new ARGV
> dlg = Dlg.new
> dlg.exec
> app.exec
>
> Stefano

My previous code contained an error: the clicked() signal of @close_btn should 
be connected to the quit() slot of Qt::Application.instance, not to the 
close() signal (which it doesn't exist).

Also, to work around the bug I spoke about, it's enough to replace 
Qt::PushButton with Qt::Object in the two calls to findChild.

Stefano