Re: [PyQt] Performance deterioration when using integer spin boxes PS ...
OK, problem has been removed, though I do not know what the problem was. The issue was that MatPlotLib did not go together with the rest and simply got the whole program to a stand-still. I have not had the time to check what really was the problem, but it seemed obvious that a long queue of events is somewhere in the background generated. Exchanging the plotting with a PyQwt implementation that is a little less luxurious, the problem disappeared. Performance was actually significantly improved also when not using any other event-driven parts of the interface. Thus looks like PyQwt is recommendable. Heinz Preisig On 09/22/2010 05:06 PM, Preisig, Heinz A wrote: PS: playing more it is not only the spin box. Other actions taken on the interface slow it down too. Thus it is not a problem with the spin boxes, but must be more generic. Only noticed the problem there first. On 09/22/2010 04:48 PM, Preisig, Heinz A wrote: Certainly: I am using a timer to generate time events. On each time event I am doing a computation, in this case a data acquisition (DA converter) and then a computation the result of which is sent to a DA converter. The interface has a couple of spin boxes and sliders and buttons to manipulate what is happening. In the application I am using now, I replaced the process interface, which actually goes and receives and sends data to a serial port, by a simple simulation, which essentially does nothing. What I observe is that when the task executes nicely in the time grid (1 s). Once I am changing things in a spin box, the task does not make it to catch the next time event and it keeps on slowing down the more I am manipulating. I presume there are lots of events being generated in the background or passed on to other levels. I should mention that this is not the first application of this type. We wrote one last year and it worked just fine. We used it extensively at the time on very slow machines. The one I am working on now is a much faster machine and it runs the newer version of python and pyqt. On the slow one it gets bugged down tremendously. Not sure what the problem is Heinz On 09/22/2010 04:04 PM, Hans-Peter Jansen wrote: On Wednesday 22 September 2010, 15:45:15 Preisig, Heinz A wrote: I observed that when using integer spin boxes in a timed loop the performance drops significantly after changing a value. Heinz, could you elaborate on using integer spin boxes in a timed loop a bit, please? I don't grasp the concept of it ATM. Pete After dxchanging them by double spin boxes no deterioration was observed. Heinz Preisig ___ PyQt mailing listp...@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt ___ PyQt mailing listp...@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt -- Heinz A Preisig Professor of Process Systems EngineeringPrivate: Øvre Bakklandet 62 B, 7013 Trondheim, Norway Department of Chemical Engineering Norwegian University of Science and Technology N -- 7491 Trondheim, Norway Tel direct: +47 735 92807 Tel mob: +47 9754 1334 e-mail: heinz.prei...@chemeng.ntnu.no mailto:heinz.prei...@chemeng.ntnu.no web: www.chemeng.ntnu.no\~preisig http://www.chemeng.ntnu.no/%7Epreisig ___ PyQt mailing listp...@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt -- Heinz A Preisig Professor of Process Systems EngineeringPrivate: Øvre Bakklandet 62 B, 7013 Trondheim, Norway Department of Chemical Engineering Norwegian University of Science and Technology N -- 7491 Trondheim, Norway Tel direct: +47 735 92807 Tel mob: +47 9754 1334 e-mail: heinz.prei...@chemeng.ntnu.no mailto:heinz.prei...@chemeng.ntnu.no web: www.chemeng.ntnu.no\~preisig http://www.chemeng.ntnu.no/%7Epreisig ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt -- Heinz A Preisig Professor of Process Systems EngineeringPrivate: Øvre Bakklandet 62 B, 7013 Trondheim, Norway Department of Chemical Engineering Norwegian University of Science and Technology N -- 7491 Trondheim, Norway Tel direct: +47 735 92807 Tel mob: +47 9754 1334 e-mail: heinz.prei...@chemeng.ntnu.no mailto:heinz.prei...@chemeng.ntnu.no web: www.chemeng.ntnu.no\~preisig http://www.chemeng.ntnu.no/%7Epreisig ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
[PyQt] Performance deterioration when using integer spin boxes
I observed that when using integer spin boxes in a timed loop the performance drops significantly after changing a value. After dxchanging them by double spin boxes no deterioration was observed. Heinz Preisig ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] Performance deterioration when using integer spin boxes
Certainly: I am using a timer to generate time events. On each time event I am doing a computation, in this case a data acquisition (DA converter) and then a computation the result of which is sent to a DA converter. The interface has a couple of spin boxes and sliders and buttons to manipulate what is happening. In the application I am using now, I replaced the process interface, which actually goes and receives and sends data to a serial port, by a simple simulation, which essentially does nothing. What I observe is that when the task executes nicely in the time grid (1 s). Once I am changing things in a spin box, the task does not make it to catch the next time event and it keeps on slowing down the more I am manipulating. I presume there are lots of events being generated in the background or passed on to other levels. I should mention that this is not the first application of this type. We wrote one last year and it worked just fine. We used it extensively at the time on very slow machines. The one I am working on now is a much faster machine and it runs the newer version of python and pyqt. On the slow one it gets bugged down tremendously. Not sure what the problem is Heinz On 09/22/2010 04:04 PM, Hans-Peter Jansen wrote: On Wednesday 22 September 2010, 15:45:15 Preisig, Heinz A wrote: I observed that when using integer spin boxes in a timed loop the performance drops significantly after changing a value. Heinz, could you elaborate on using integer spin boxes in a timed loop a bit, please? I don't grasp the concept of it ATM. Pete After dxchanging them by double spin boxes no deterioration was observed. Heinz Preisig ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt -- Heinz A Preisig Professor of Process Systems EngineeringPrivate: Øvre Bakklandet 62 B, 7013 Trondheim, Norway Department of Chemical Engineering Norwegian University of Science and Technology N -- 7491 Trondheim, Norway Tel direct: +47 735 92807 Tel mob: +47 9754 1334 e-mail: heinz.prei...@chemeng.ntnu.no mailto:heinz.prei...@chemeng.ntnu.no web: www.chemeng.ntnu.no\~preisig http://www.chemeng.ntnu.no/%7Epreisig ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] Performance deterioration when using integer spin boxes PS ...
PS: playing more it is not only the spin box. Other actions taken on the interface slow it down too. Thus it is not a problem with the spin boxes, but must be more generic. Only noticed the problem there first. On 09/22/2010 04:48 PM, Preisig, Heinz A wrote: Certainly: I am using a timer to generate time events. On each time event I am doing a computation, in this case a data acquisition (DA converter) and then a computation the result of which is sent to a DA converter. The interface has a couple of spin boxes and sliders and buttons to manipulate what is happening. In the application I am using now, I replaced the process interface, which actually goes and receives and sends data to a serial port, by a simple simulation, which essentially does nothing. What I observe is that when the task executes nicely in the time grid (1 s). Once I am changing things in a spin box, the task does not make it to catch the next time event and it keeps on slowing down the more I am manipulating. I presume there are lots of events being generated in the background or passed on to other levels. I should mention that this is not the first application of this type. We wrote one last year and it worked just fine. We used it extensively at the time on very slow machines. The one I am working on now is a much faster machine and it runs the newer version of python and pyqt. On the slow one it gets bugged down tremendously. Not sure what the problem is Heinz On 09/22/2010 04:04 PM, Hans-Peter Jansen wrote: On Wednesday 22 September 2010, 15:45:15 Preisig, Heinz A wrote: I observed that when using integer spin boxes in a timed loop the performance drops significantly after changing a value. Heinz, could you elaborate on using integer spin boxes in a timed loop a bit, please? I don't grasp the concept of it ATM. Pete After dxchanging them by double spin boxes no deterioration was observed. Heinz Preisig ___ PyQt mailing listp...@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt ___ PyQt mailing listp...@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt -- Heinz A Preisig Professor of Process Systems EngineeringPrivate: Øvre Bakklandet 62 B, 7013 Trondheim, Norway Department of Chemical Engineering Norwegian University of Science and Technology N -- 7491 Trondheim, Norway Tel direct: +47 735 92807 Tel mob: +47 9754 1334 e-mail: heinz.prei...@chemeng.ntnu.no mailto:heinz.prei...@chemeng.ntnu.no web: www.chemeng.ntnu.no\~preisig http://www.chemeng.ntnu.no/%7Epreisig ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt -- Heinz A Preisig Professor of Process Systems EngineeringPrivate: Øvre Bakklandet 62 B, 7013 Trondheim, Norway Department of Chemical Engineering Norwegian University of Science and Technology N -- 7491 Trondheim, Norway Tel direct: +47 735 92807 Tel mob: +47 9754 1334 e-mail: heinz.prei...@chemeng.ntnu.no mailto:heinz.prei...@chemeng.ntnu.no web: www.chemeng.ntnu.no\~preisig http://www.chemeng.ntnu.no/%7Epreisig ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] upgrade to ubuntu 10.04 -- problem with graphics (solved)
Seems the problem is solved for now. I searched for a couple of days and came to no conclusion. The task crashed after having left itemChange in the next execution call. As mentioned running it in the debugger inside Eclipse did not result any error message. Running it from the terminal it gave segmentation fault. One problem disappeared when setting the flag ItemSendsGeometryChanges as David suggested. Then I could move the objects again. However it crashed on another operation. Again the segmentation fault. Comparing my rather old code with the elasticnode example code I found that I had not set the index method (setItemIndexMethod) to NoIndex. Adding the flag, did the trick. Maybe this was a default before? Heinz PS I attach the modified code of the elasticnodes example. Not sure anymore where I took it from, but if I am not mistaken from the riverbankcomputing domain. On 09/05/2010 08:32 AM, Preisig, Heinz A wrote: Thanks for the help. I shall modify the code and look at the example too. I also decided to re-install. Shall report on results. Cheers, Heinz On 09/04/2010 03:30 PM, David Boddie wrote: On Sat Sep 4 08:00:06 BST 2010, Preisig, Heinz A wrote: After upgrading Ubuntu 9.10 to 10.04 I encounter some problems with running a graphics application I built last year. It uses the mechanisms described in the example elasticnodes. The two application represent a graph, which when moving the nodes also update the location of the arcs. In both cases the arcs are not updated. In fact the example does not show the arcs when starting it. My application does show the arcs, but it does not update. I dug for some hours in the code, but could not find a problem. It seems it does not get into the itemChange method of the QGraphicsItem class. Some manipulations resulted in abortion of the task, which when running from within Eclipse did not produce an error message. From the terminal I got an occasional segmentation fault. I don't know why you are getting segmentation faults, but the problem with the itemChange method is due to a change in behaviour in Qt 4.6. You now need to call the item's setFlag method with the ItemSendsGeometryChanges flag to get notifications when items move. David ___ PyQt mailing listp...@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt -- Heinz A Preisig Professor of Process Systems EngineeringPrivate: Øvre Bakklandet 62 B, 7013 Trondheim, Norway Department of Chemical Engineering Norwegian University of Science and Technology N -- 7491 Trondheim, Norway Tel direct: +47 735 92807 Tel mob: +47 9754 1334 e-mail: heinz.prei...@chemeng.ntnu.no mailto:heinz.prei...@chemeng.ntnu.no web: www.chemeng.ntnu.no\~preisig http://www.chemeng.ntnu.no/%7Epreisig ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt -- Heinz A Preisig Professor of Process Systems EngineeringPrivate: Øvre Bakklandet 62 B, 7013 Trondheim, Norway Department of Chemical Engineering Norwegian University of Science and Technology N -- 7491 Trondheim, Norway Tel direct: +47 735 92807 Tel mob: +47 9754 1334 e-mail: heinz.prei...@chemeng.ntnu.no mailto:heinz.prei...@chemeng.ntnu.no web: www.chemeng.ntnu.no\~preisig http://www.chemeng.ntnu.no/%7Epreisig #!/usr/bin/env python # ## ## Copyright (C) 2006-2006 Trolltech ASA. All rights reserved. ## ## This file is part of the example classes of the Qt Toolkit. ## ## Licensees holding a valid Qt License Agreement may use this file in ## accordance with the rights, responsibilities and obligations ## contained therein. Please consult your licensing agreement or ## contact sa...@trolltech.com if any conditions of this licensing ## agreement are not clear to you. ## ## Further information about Qt licensing is available at: ## http://www.trolltech.com/products/qt/licensing.html or by ## contacting i...@trolltech.com. ## ## This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE ## WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. ## # import sys import math from PyQt4 import QtCore, QtGui class Edge(QtGui.QGraphicsItem): Pi = math.pi TwoPi = 2.0 * Pi Type = QtGui.QGraphicsItem.UserType + 2 def __init__(self, sourceNode, destNode): QtGui.QGraphicsItem.__init__(self) self.arrowSize = 10.0 self.sourcePoint = QtCore.QPointF() self.destPoint = QtCore.QPointF() self.setAcceptedMouseButtons(QtCore.Qt.NoButton) self.source = sourceNode self.dest = destNode self.source.addEdge(self) self.dest.addEdge(self) self.adjust() def type(self): return
Re: [PyQt] upgrade to ubuntu 10.04 -- problem with graphics
Thanks for the help. I shall modify the code and look at the example too. I also decided to re-install. Shall report on results. Cheers, Heinz On 09/04/2010 03:30 PM, David Boddie wrote: On Sat Sep 4 08:00:06 BST 2010, Preisig, Heinz A wrote: After upgrading Ubuntu 9.10 to 10.04 I encounter some problems with running a graphics application I built last year. It uses the mechanisms described in the example elasticnodes. The two application represent a graph, which when moving the nodes also update the location of the arcs. In both cases the arcs are not updated. In fact the example does not show the arcs when starting it. My application does show the arcs, but it does not update. I dug for some hours in the code, but could not find a problem. It seems it does not get into the itemChange method of the QGraphicsItem class. Some manipulations resulted in abortion of the task, which when running from within Eclipse did not produce an error message. From the terminal I got an occasional segmentation fault. I don't know why you are getting segmentation faults, but the problem with the itemChange method is due to a change in behaviour in Qt 4.6. You now need to call the item's setFlag method with the ItemSendsGeometryChanges flag to get notifications when items move. David ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt -- Heinz A Preisig Professor of Process Systems EngineeringPrivate: Øvre Bakklandet 62 B, 7013 Trondheim, Norway Department of Chemical Engineering Norwegian University of Science and Technology N -- 7491 Trondheim, Norway Tel direct: +47 735 92807 Tel mob: +47 9754 1334 e-mail: heinz.prei...@chemeng.ntnu.no mailto:heinz.prei...@chemeng.ntnu.no web: www.chemeng.ntnu.no\~preisig http://www.chemeng.ntnu.no/%7Epreisig ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
[PyQt] upgrade to ubuntu 10.04 -- problem with graphics
After upgrading Ubuntu 9.10 to 10.04 I encounter some problems with running a graphics application I built last year. It uses the mechanisms described in the example elasticnodes. The two application represent a graph, which when moving the nodes also update the location of the arcs. In both cases the arcs are not updated. In fact the example does not show the arcs when starting it. My application does show the arcs, but it does not update. I dug for some hours in the code, but could not find a problem. It seems it does not get into the itemChange method of the QGraphicsItem class. Some manipulations resulted in abortion of the task, which when running from within Eclipse did not produce an error message. From the terminal I got an occasional segmentation fault. Has somebody experienced similar problems? I should mention that I upgraded Ubuntu and did not do a clean re-install just as yet. I guess that would be the next step. Heinz Preisig ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
[PyQt] [wizard] done, accept, reject
I am running into problems controlling the exit from the wizard. Tried several things but seem not to find a solution. Probably overlook something...? The code, attached below is executed on ubuntu 10.04 and I also tried on kubuntu. The problem is with done and reject. The task does not exit, but persists. I have to kill the process. When eliminating done and reject, the task exits cleanly on finish and cancel. If I add the statement return 1 to done, I get an error message on the type being returned. Does somebody have an idea what is wrong? Thanks, Heinz Preisig code: attached -- Heinz A Preisig Professor of Process Systems EngineeringPrivate: Øvre Bakklandet 62 B, 7013 Trondheim, Norway Department of Chemical Engineering Norwegian University of Science and Technology N -- 7491 Trondheim, Norway Tel direct: +47 735 92807 Tel mob: +47 9754 1334 e-mail: heinz.prei...@chemeng.ntnu.no mailto:heinz.prei...@chemeng.ntnu.no web: www.chemeng.ntnu.no\~preisig http://www.chemeng.ntnu.no/%7Epreisig #!./bin/python ''' Created on May 10, 2010 @author: heinz ''' import sys from PyQt4 import QtGui, QtCore from wizard_ui_impl import Ui_WizardImpl a = QtGui.QApplication(sys.argv) w = Ui_WizardImpl() w.show() #TODO: close all windows on exit r = a.exec_() print 'finishing', r wizard.ui Description: application/designer #!/usr/bin/env python # -*- coding: utf-8 -*- ''' Created on Aug 9, 2010 @author: heinz ''' from PyQt4 import QtGui from PyQt4 import QtCore from wizard_ui import Ui_Wizard class Ui_WizardImpl(QtGui.QWizard): ''' classdocs ''' def __init__(self, *args): QtGui.QWizard.__init__(self) self.setAttribute(QtCore.Qt.WA_DeleteOnClose) self.ui = Ui_Wizard() self.ui.setupUi(self) def cleanupPage(self,int): print 'clean up page' def done(self, int): print 'done' self.close() return self def accept(self): print 'accepted' self.close() #def reject(self): #print 'reject' #self.__exit() # -*- coding: utf-8 -*- # Form implementation generated from reading ui file 'wizard.ui' # # Created: Thu Aug 12 10:39:21 2010 # by: PyQt4 UI code generator 4.7.2 # # WARNING! All changes made in this file will be lost! from PyQt4 import QtCore, QtGui class Ui_Wizard(object): def setupUi(self, Wizard): Wizard.setObjectName(Wizard) Wizard.resize(400, 300) self.wizardPage1 = QtGui.QWizardPage() self.wizardPage1.setObjectName(wizardPage1) Wizard.addPage(self.wizardPage1) self.wizardPage2 = QtGui.QWizardPage() self.wizardPage2.setObjectName(wizardPage2) Wizard.addPage(self.wizardPage2) self.retranslateUi(Wizard) QtCore.QMetaObject.connectSlotsByName(Wizard) def retranslateUi(self, Wizard): Wizard.setWindowTitle(QtGui.QApplication.translate(Wizard, Wizard, None, QtGui.QApplication.UnicodeUTF8)) ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
[PyQt] Fwd: Re: [wizard] done, accept, reject
Hi Colin, thanks that does indeed work. I thought though I essentially tried it with QtGui.QWizard(self).done(r) but that did not work. Cheers, Heinz On 08/12/2010 01:55 PM, Colin McPhail wrote: super(Ui_WizardImpl, self).done(r) -- Heinz A Preisig Professor of Process Systems EngineeringPrivate: Øvre Bakklandet 62 B, 7013 Trondheim, Norway Department of Chemical Engineering Norwegian University of Science and Technology N -- 7491 Trondheim, Norway Tel direct: +47 735 92807 Tel mob: +47 9754 1334 e-mail: heinz.prei...@chemeng.ntnu.no mailto:heinz.prei...@chemeng.ntnu.no web: www.chemeng.ntnu.no\~preisig http://www.chemeng.ntnu.no/%7Epreisig ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] Fwd: Re: [wizard] done, accept, reject
Sure, was reading a part of the manual that was in C/C++. You are certainly correct. Could not see it. Thanks, Heinz On 08/12/2010 04:10 PM, Sybren A. Stüvel wrote: On 12-8-2010 15:30, Preisig, Heinz A wrote: I thought though I essentially tried it with QtGui.QWizard(self).done(r) You can't use C-style casting in Python. What QtGui.QWizard(self) does is create a new QWizard with self as the parent. It then proceeds to call done(r) on that new QWizard instance. Then the instance is cobbled up by the garbage collector. I think what you want is to call the unbound method: QtGui.QWizard.done(self, r) Cheers, Sybren -- Heinz A Preisig Professor of Process Systems EngineeringPrivate: Øvre Bakklandet 62 B, 7013 Trondheim, Norway Department of Chemical Engineering Norwegian University of Science and Technology N -- 7491 Trondheim, Norway Tel direct: +47 735 92807 Tel mob: +47 9754 1334 e-mail: heinz.prei...@chemeng.ntnu.no mailto:heinz.prei...@chemeng.ntnu.no web: www.chemeng.ntnu.no\~preisig http://www.chemeng.ntnu.no/%7Epreisig ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] Fwd: Re: [wizard] done, accept, reject one more time for the records
PS: I just checked and found that I also tried: def done(self): ... QtGui.QWizard.close(self) and that did not work either. Regards, Heinz On 08/12/2010 04:10 PM, Sybren A. Stüvel wrote: On 12-8-2010 15:30, Preisig, Heinz A wrote: I thought though I essentially tried it with QtGui.QWizard(self).done(r) You can't use C-style casting in Python. What QtGui.QWizard(self) does is create a new QWizard with self as the parent. It then proceeds to call done(r) on that new QWizard instance. Then the instance is cobbled up by the garbage collector. I think what you want is to call the unbound method: QtGui.QWizard.done(self, r) Cheers, Sybren -- Heinz A Preisig Professor of Process Systems EngineeringPrivate: Øvre Bakklandet 62 B, 7013 Trondheim, Norway Department of Chemical Engineering Norwegian University of Science and Technology N -- 7491 Trondheim, Norway Tel direct: +47 735 92807 Tel mob: +47 9754 1334 e-mail: heinz.prei...@chemeng.ntnu.no mailto:heinz.prei...@chemeng.ntnu.no web: www.chemeng.ntnu.no\~preisig http://www.chemeng.ntnu.no/%7Epreisig ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
[PyQt] Not implemented error
Hi, is there a way to get rid of the error NotImplementedError: QGraphicsItem.paint() is abstract and must be overridden Thanks Heinz Preisig begin:vcard fn:Preisig, Heinz A n:Preisig;Heinz A org:NTNU;Chemical Engineering adr;quoted-printable:;;Sem S=C3=A6landsvei 4 (Kjemiblokk 5);Trondheim;;7491;Norway email;internet:[EMAIL PROTECTED] title:Professor of Process Systems Engineering tel;work:+47 735 92807 tel;cell:+47 97.54.13.34 note;quoted-printable:Private:=0D=0A= Oevre Bakklandet 62 B=0D=0A= 7013 Trondheim=0D=0A= Norway url:www.chemeng.ntnu.no\~preisig version:2.1 end:vcard ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] windows installer
The problem was that python did not know where the libraries were. Can this be automated on the installer? Cheers, Heinz Preisig Heinz A. Preisig wrote: Hi I got a new machine and installed 1. python 2.5 2. PyQt *Py2.5-gpl-4.4.2-1 running an application I get the error message name start point for procedure could not be found in dynamic link library QtCore4.dll(translation from Norwegian...may not be precise) What do I miss? Regards, Heinz Preisig -- Heinz A Preisig Professor of Process Systems EngineeringPrivate: Øvre Bakklandet 62 B, 7013 Trondheim, Norway Department of Chemical Engineering Norwegian University of Science and Technology N – 7491 Trondheim, Norway Tel direct: +47 735 92807 Tel mob: +47 9754 1334 e-mail: [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] web: www.chemeng.ntnu.no\~preisig http://www.chemeng.ntnu.no/%7Epreisig ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt -- Heinz A Preisig Professor of Process Systems EngineeringPrivate: Øvre Bakklandet 62 B, 7013 Trondheim, Norway Department of Chemical Engineering Norwegian University of Science and Technology N – 7491 Trondheim, Norway Tel direct: +47 735 92807 Tel mob: +47 9754 1334 e-mail: [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] web: www.chemeng.ntnu.no\~preisig http://www.chemeng.ntnu.no/%7Epreisig begin:vcard fn:Preisig, Heinz A n:Preisig;Heinz A org:NTNU;Chemical Engineering adr;quoted-printable:;;Sem S=C3=A6landsvei 4 (Kjemiblokk 5);Trondheim;;7491;Norway email;internet:[EMAIL PROTECTED] title:Professor of Process Systems Engineering tel;work:+47 735 92807 tel;cell:+47 97.54.13.34 note;quoted-printable:Private:=0D=0A= Oevre Bakklandet 62 B=0D=0A= 7013 Trondheim=0D=0A= Norway url:www.chemeng.ntnu.no\~preisig version:2.1 end:vcard ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] msvcp71.dll
First time around it is a little tricky to find out what is going wrong when the dll is missing. It may not be trivial for everybody to find out. Could either be included or mentioned in an installation description. - Heinz Preisig Giovanni Bajo wrote: On 9/3/2007 12:23 PM, Phil Thompson wrote: I've just tried out the latest pyqt4 installer for windows, and found that nothing would run because msvcp71.dll was missing. Would it be sensible to include this in the package, or is this something whose installation should be sorted out by the user? Isn't it needed by Python anyway? Not really, since it's the C++ runtime library. ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] ANN: PyQt v4.3, PyQt v3.17.3, SIP v4.7 Released
Hmmm, having installed the new version, the graphics items suddenly moved twice as fast over the screen. Adjusting the move-event handler fixed the problem. But there are more things (at least in the graphview - group) that seem to have changed their behaviour. Do we all know that? Cheers, Heinz Phil Thompson wrote: PyQt v4.3, PyQt v3.17.3 and SIP v4.7 have been released and are available from the usual places. PyQt v4.3 supports Qt v4.3.0, the pickling of many Qt classes and enums, and the use of partial functions as slots. See the NEWS file for the details. SIP v4.7 is required. PyQt v3.17.3 is a minor bug fix release. Previous versions will not build with SIP v4.7. SIP v4.7 supports composite and consolidated modules, and the new %PickleCode directive. See the NEWS file for the details. Phil ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
[PyQt] Difficulties with debugging
Hi, I have been porting an editor that is strongly graphics based to the new version. Thought it would be useful to reflect some of the problems I had with the conversion. Firstly there were a large number of small changes. Mostly renaming due to the changes made by the Trolltech people. Lots of the new names seemed quite unnecessary at a first glance at least. The main problem though is that the debugging is difficult as python is blowing frequently. Seems that there are some memory issues, which are difficult to identify from the surface. Problems seem to focus on graphview and graphitems. Not quite sure on how to approach the problem. I am using Eclipse + PyDev as a developing environment. Heinz Preisig Heinz A Preisig Professor of Process Systems EngineeringPrivate: Øvre Bakklandet 62 B, 7013 Trondheim, Norway Department of Chemical Engineering Norwegian University of Science and Technology N -- 7491 Trondheim, Norway Tel direct: +47 735 92807 Tel mob: +47 9754 1334 e-mail: [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] web: www.chemeng.ntnu.no\~preisig http://www.chemeng.ntnu.no/%7Epreisig ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
