Hello Robert,
> Maybe I find some time on the weekend to read something about the
qt-layer
> configs.
Please, read. This is the first think to do.
The text to read is one page long.
Please spend another weekend using "search engine" to look up
"Qt4 + QtRoot +ROOT" topics.
Then (I am sorry, I have to repeat)
> Anyway, before going further with the guess job please clarify:
>
> 1. What your ROOT version is
> 2. What your Qt version is
> 3. Does you activate QtROOT layer via ROOT resource file
>
> see: "Qt-layer Configuration"
> ftp://root.cern.ch/root/doc/26ROOTandQt.pdf
> p.424
> ?
> 4. Does the patched version of "qtexample.py" works for you?
In the other words, please, provide us the step-by-step instruction to reproduce your issue.
By the way, does PyQt4 interactive examples work for you (with NO ROOT/QtRoot)?
Best Regards
Valeri Fine
> -----Original Message-----
> From: Riemann, Robert [mailto:robert.riemann_at_physik.hu-berlin.de]
> Sent: Thursday, July 23, 2009 2:34 PM
> To: Fine, Valeri
> Cc: roottalk_at_root.cern.ch; Zoltan.Mathe_at_ucdconnect.ie
> Subject: Re: [ROOT] ruby with root + qt
>
> I tested the new pyroot example, but the program aborted with the
> following
> message:
>
>
> > python qt3example.py
> Traceback (most recent call last):
> File "qt3example.py", line 47, in <module>
> terminator = ROOT.TQtRootSlot.CintSlot()
> File "lib/ROOT.py", line 345, in __getattr1
> return getattr( self, name )
> File "lib/ROOT.py", line 367, in __getattr2
> attr = _root.LookupRootEntity( name )
> AttributeError: TQtRootSlot
>
> I published qt3example.py on a code-snippet-wiki
> (editable without login):
> http://refactory.org/s/using_root_with_python_and_qt4/view/1
>
> Maybe I find some time on the weekend to read something about the
qt-layer
> configs.
>
> Greets Robert
>
>
> Am Donnerstag, 23. Juli 2009 19:44:55 schrieb Fine, Valeri:
> > Hello Robert,
> >
> > I have neither Python nor PyQt installed to debug PyROOT related
issue.
> >
> > > I tried to translate the python+qt example from the userguide to
ruby.
> > >
> > >> I had to add one modification (line 17, actually in comments) to
get
> >
> > it
> >
> > > working, but the program doesn't behave as well as the
python-version.
> >
> > From the first glance the example:
> > ftp://root.cern.ch/root/doc/19PythonRuby.pdf is for Qt3.
> >
> > That was fixed by Zoltan Mathe (See his E-mail below)
> >
> > >> -----Original Message-----
> > >> From: Zoltan MATHE [mailto:Zoltan.Mathe_at_ucdconnect.ie]
> > >> Sent: Wednesday, June 10, 2009 7:50 AM
> > >> To: Fine, Valeri
> > >> Cc: WLavrijsen_at_lbl.gov; Rene Brun
> > >> Subject: Re: [Fwd: root and qt problem]
> > >>
> > >> Hello, :)
> > >> I changed the qtexample.py, because it is implemented qt3. I
attached
> > >>
> > >> the file. But it still dosn't work.
> >
> > ....
> >
> > I've submitted his patch to CERN.
> >
> > Index: qtexample.py
> > ===================================================================
> > --- qtexample.py (revision 29535)
> > +++ qtexample.py (working copy)
> > @@ -1,26 +1,29 @@
> > import sys
> > -import qt
> >
> > +from PyQt4.QtGui import *
> > +from PyQt4.QtCore import *
> > +
> > +
> > import ROOT
> > import sip
> >
> > -class window(qt.QMainWindow):
> > +class window(QMainWindow):
> > def __init__(self):
> > # Init the main window.
> > - qt.QMainWindow.__init__(self)
> > + QMainWindow.__init__(self)
> > self.resize(350, 350)
> >
> > # Create the central widget.
> > - self.CentralWidget = qt.QWidget(self)
> > + self.CentralWidget = QWidget(self)
> > self.setCentralWidget(self.CentralWidget)
> > - self.Layout = qt.QGridLayout(self.CentralWidget)
> > + self.Layout = QGridLayout(self.CentralWidget)
> >
> > # Create a button.
> > - self.QuitButton = qt.QPushButton(self.centralWidget())
> > + self.QuitButton = QPushButton(self.centralWidget())
> > self.QuitButton.setText('Quit')
> > self.Layout.addWidget(self.QuitButton, 1, 0)
> > # Connect the button.
> > - qt.QObject.connect(self.QuitButton, qt.SIGNAL('clicked()'),
> > self.quit)
> > + QObject.connect(self.QuitButton, SIGNAL('clicked()'),
> > self.quit)
> >
> > # Create a root histogram.
> > self.hist = ROOT.TH1F("pipo","pipo", 100, 0, 100)
> > @@ -31,7 +34,7 @@
> >
> > # Place the TQtWidget in the main grid layout and draw the
> > histogram.
> >
> > -
> >
self.Layout.addWidget(sip.wrapinstance(ROOT.AddressOf(self.Canvas)[0],qt
> > .QWidget), 0, 0)
> > +
> >
self.Layout.addWidget(sip.wrapinstance(ROOT.AddressOf(self.Canvas)[0],QW
> > idget), 0, 0)
> > self.hist.Draw()
> >
> > def quit(self):
> > @@ -40,11 +43,12 @@
> >
> >
> > if __name__ == '__main__':
> > - application = qt.qApp
> > + application = qApp
> > terminator = ROOT.TQtRootSlot.CintSlot()
> > - termAddress =
> > sip.wrapinstance(ROOT.AddressOf(terminator)[0],qt.QObject)
> > - qt.QObject.connect(application,
> > qt.SIGNAL("lastWindowClosed()"),termAddress ,qt.SLOT("Terminate()"))
> > + termAddress =
> > sip.wrapinstance(ROOT.AddressOf(terminator)[0],QObject)
> > + QObject.connect(application,
> > SIGNAL("lastWindowClosed()"),termAddress ,SLOT("Terminate()"))
> > w = window()
> > w.show()
> > ROOT.gApplication.Run(1)
> > print 'Bye forever!'
> > +
> >
> > > Closing the TBrowser and restarting with another
> > > click on the button doesn't work.
> > > In some cases windows freeze. Without the
> > > fork-command the qt-window freezes.
> >
> > From the first glance, your application lacks of the "event loop"
by
> > some reason.
> >
> > > Maybe it's a bug. Does anyone have a better idea how to make it
with
> >
> > ruby?
> >
> > I am not aware about any attempt to use QtRoot with ruby.
> >
> > Anyway, before going further with the guess job please clarify:
> >
> > 1. What your ROOT version is
> > 2. What your Qt version is
> > 3. Does you activate QtROOT layer via ROOT resource file
> >
> > see: "Qt-layer Configuration"
> > ftp://root.cern.ch/root/doc/26ROOTandQt.pdf
> > p.424
> > ?
> > 4. Does the patched version of "qtexample.py" works for you?
> >
> > Thank you, Valeri
> >
> >
> >
> > -
> >
> > > Greets Robert
> > >
> > > Versions:
> > > Root v5.20/00
> > > Ruby ruby 1.8.7 (2008-08-11 patchlevel 72) [x86_64-linux]
> > > opensuse 11.1 with kde 4.2.4 and ruby-kde4 4.2.4
> > >
> > > Code with highlighting on pastie.org: http://pastie.org/548613
> > > Code without highlighting here:
> > >
> > > #!/usr/bin/env ruby
> > > $KCODE = 'u' # use utf8 encoding of this file
> > >
> > > require 'Qt4'
> > > require 'libRuby'
> > >
> > > class CustomWidget < Qt::PushButton
> > >
> > > slots :browse
> > >
> > > def initialize( label )
> > > super( label )
> > > end
> > >
> > > def browse
> > > tb = TBrowser.new
> > > # fork do gApplication.Run end
> > > end
> > >
> > > end
> > >
> > > a = Qt::Application.new(ARGV) # create an application object
> > > w = CustomWidget.new( 'Start TBrowser' ) # create an instance of
our
> >
> > self-
> >
> > > made
> > > CustomWidget
> > > Qt::Object.connect( w, SIGNAL( :clicked ), w, SLOT( :browse ) )
> > > w.show # show our widget
> > > a.exec # run the application
Received on Thu Jul 23 2009 - 21:24:16 CEST
This archive was generated by hypermail 2.2.0 : Fri Jul 24 2009 - 05:50:06 CEST