RE: ruby with root + qt from Fine, Valeri on 2009-07-30 (RootTalk)

From: Fine, Valeri <fine_at_bnl.gov>
Date: Wed, 29 Jul 2009 19:57:42 -0400

Hello Zoltan,

> Maybe you will have a other person how use PyQt and
> qtRoot and PyQt link the wrong qt version.

I've linked your instruction from my Web page:

http://root.bnl.gov/QtRoot/How2Install4Unix.html
http://root.bnl.gov/QtRoot/How2Install4Unix.html#pyqtroot
http://root.bnl.gov/QtRoot/PyQtRoot.html

Hope it helps
Best Regards

                         Valeri Fine

Brookhaven National Laboratory
Upton, NY 11973, USA
Phone: +1 631 344 7806
Fax: +1 631 344 4206
E-mail: fine_at_bnl.gov

> -----Original Message-----
> From: Zoltan MATHE [mailto:Zoltan.Mathe_at_ucdconnect.ie]
> Sent: Tuesday, July 28, 2009 8:39 AM
> To: Fine, Valeri
> Cc: Riemann, Robert; roottalk_at_root.cern.ch
> Subject: Re: [ROOT] ruby with root + qt
>
> Hello Valeri,
> I found the problem. I followed the instructions, but I forgot to
> recompile pyQt with qt4.5.2. That was the problem. PyQT packages
linked
> the qt4.4.2.
> I think good if we have one sentence about the pyqt in
> http://root.bnl.gov/QtRoot/How2Install4Unix.html#x11short page. Maybe
> you will have a other person how use PyQt and qtRoot and PyQt link the
> wrong qt version.
> Thanks for your helps!
> Zoltan
> Fine, Valeri wrote:
> > Hello Zoltan,
> >
> >
> >> Hello Valeri,
> >> I tried to use the new version ROOT and qtRoot, but It dosn't work.
> >> I get the following error message:
> >> [pclhcb43] /scratch/zmathe/local > python qtexample.py
> >> Executable 'root.exe' was compiled with Qt 4.5.2, found Qt 4.4.2.
> >>
> >
> > It seems to me the message above is clear.
> >
> > It says, that that you had compiled QtRoot using Qt 4.5.2 and you
> attempted to invoke ROOT against Qt 4.4.2.
> >
> >
> >> I used INSTALL_QTROOT.sh scripts from
> >> . . .
> >> http://root.bnl.gov/QtRoot/INSTALL_QTROOT.sh
> >>
> >
> > Did you use it "as is " or had customized the script? If the later
is
> correct I would like to see the "diff" file. The page
> http://root.bnl.gov/QtRoot/How2Install4Unix.html#x11short that
describes
> the installation, says,
> > " . . .
> > 1. Set the package environment. To do that you need to find and
select
> one of the 3 shell scripts created by the "Full Installation"
> > source set_environment.csh
> > source set_environment.sh # this script is Ok for Cygwin
> environment as well)
> > source set_environment.tcsh
> > . . . "
> > Did you perform that step ?
> >
> >
> >> I recompiled the root. I used: ./configure
> >> --prefix=/scratch/zmathe/local/root --enable-python --enable-qt
> >>
> >
> > Mmm , the step above is REDUNDANT, The
> http://root.bnl.gov/QtRoot/How2Install4Unix.html
> <http://root.bnl.gov/QtRoot/How2Install4Unix.html> suggests a few
ways to
> use the script to compliment the existing ROOT installation made with
no
> "--enable-qt" option.
> >
> > Did you use the script "as is" or you customized it? I am wondering
if
> you have built QtRoot twice and each time against of the different
Qt
> version.
> >
> > I really would like to see what you did "step -by-step" and I would
like
> to see your environment variables for each of your step too.
> >
> > Please make sure
> >
> > 1. You have only version of Qt on your LD_LIBRARY_PATH
> >
> > 2. There is ONLY one version of the libGQt.so shared library.
> >
> > . . . .
> >
> >
> >> Can you help me? I have no idea what I am doing wrong.
> >>
> >
> > I can not guess what you did wrong. Please tell me what you did
"step-
> by-step". This way I'll be able to spot what you did wrong. ( may be
you
> should send me a private message )
> >
> >
> >> Before I used ROOT 5.22, QtRoot and qt 4.4.2 and It is worked.
> >>
> >
> > Does that Qt 4.4.2 is still installed on your computer? Do you have
Qt
> 4.4.2 AND Qt 4.5.2 on your computer installed simultaneously? How did
you
> separate the installations?
> >
> > Valeri
> >
> >
> > Fine, Valeri wrote:
> >
> >> Hello Robert,
> >>
> >> From your other post
> http://root.cern.ch/root/roottalk/roottalk09/0691.html
> >>
> >> I learned http://pastie.org/558537 your way to build ROOT:
> >>
> >> ./configure --prefix=/usr/local --enable-ruby --enable-python
--enable-
> explicitlink --enable-gsl-shared --enable-rpath
> >>
> >> It indicates that you do not build the Qt-layer due lack of the
> optional "--enable-qt" build parameters.
> >> That means you should do that first.
> >> The recommended way is
> http://root.bnl.gov/QtRoot/How2Install4Unix.html#complement
> <http://root.bnl.gov/QtRoot/How2Install4Unix.html#complement>
> >> Hope this helps, Valeri
> >>
> >>
> >> ________________________________
> >>
> >> From: Riemann, Robert [mailto:robert.riemann_at_physik.hu-berlin.de]
> >> Sent: Thu 7/23/2009 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 30 2009 - 01:57:54 CEST

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