Re: [PyQt] Moving from Python 2 to Python 3: A 4 page cheat sheet
On 2009-12-01, Glenn Linderman wrote: On approximately 12/1/2009 6:15 AM, came the following characters from the keyboard of Mark Summerfield: Here's the direct link: http://ptgmedia.pearsoncmg.com/imprint_downloads/informit/promotions/... Produces File not found. in a web page, when I click. The link seems to have been mangled. Here it is in full: http://ptgmedia.pearsoncmg.com/imprint_downloads/informit/promotions/python/python2python3.pdf -- Mark Summerfield, Qtrac Ltd, www.qtrac.eu C++, Python, Qt, PyQt - training and consultancy Advanced Qt Programming - ISBN 0321635906 ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
[PyQt] Corrupted data in QDataStream
Hello everyone, I'm trying to send a python-string via a QTcpSocket. I am using this structure: block = QtCore.QByteArray() stream = QtCore.QTextStream(block, QtCore.QIODevice.WriteOnly) stream myPythonString if myTcpSocket.isWritable(): myTcpSocket.write(block) - However, it now seems that there are some corrupted characters at the beginning of the bytearray (or textstream) :-S.. A solution for this can be to call stream.flush() just before I stream myPythonString to it.. In code: block = QtCore.QByteArray() stream = QtCore.QTextStream(block, QtCore.QIODevice.WriteOnly) stream.flush() # removes the ascii dump successfully stream myPythonString if myTcpSocket.isWritable(): print writing data to , str(socket.peerAddress().toString()) myTcpSocket.write(block) # crashes here - But at this point, the program crashes at the last line when actually writing to the socket.. How come? I found out that this crash can be reproduced anywhere when calling stream.string() just after streaming myPythonString to the textstream.. In code: block = QtCore.QByteArray() stream = QtCore.QTextStream(block, QtCore.QIODevice.WriteOnly) stream.flush() # removes the ascii dump stream myPythonString print str(stream.string()) # crashes here already.. if myTcpSocket.isWritable(): print writing data to , str(socket.peerAddress().toString()) myTcpSocket.write(block) - How on earth can this be? -- Nick Gaens ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] Moving from Python 2 to Python 3: A 4 page cheat sheet
On Wednesday 02 December 2009 09:43:06 Mark Summerfield wrote: On 2009-12-01, Glenn Linderman wrote: On approximately 12/1/2009 6:15 AM, came the following characters from the keyboard of Mark Summerfield: Here's the direct link: http://ptgmedia.pearsoncmg.com/imprint_downloads/informit/promotions/.. . Produces File not found. in a web page, when I click. The link seems to have been mangled. Here it is in full: http://ptgmedia.pearsoncmg.com/imprint_downloads/informit/promotions/python /python2python3.pdf Thanks! It’s a great compilation :) ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
RE: [PyQt] Drag Drop with QTreeWidget
I have several question (tree = QTreeWidget()) 1) I have activated: tree.setSelectionMode(QAbstractView.ExtendedSelection) yet before I would just keep the mouse pressed and slide over the selection I wanted but now that is not possible. Is there a way to maintain such behaviour and force that the drag is only performed on a second click over the selection ? not sure i undertstand what you mean - but i would have thought the selection behaviour changed because you enabled drag and drop, not because you changed the selection mode. I wasn't clear on my explanation. Before trying any Drag'n'Drop I had QAbstractView.ExtendedSelection and now, with Drag'n'Drop I have a different behaviour. I would like to keep the same behaviour as before ... and when doing so create the sub-node Folder1 if it does not exist within campaign and put the dragged items under folder1 (and not campaign where they were dropped). How to do this ? Do I do this in a dropEvent? In a dropEventAction ? you could monitor the tree using QTreeView.rowsInserted and then reparent dropped items as necessary. I will take a look at this ... The information in this e-mail is confidential. The contents may not be disclosed or used by anyone other than the addressee. Access to this e-mail by anyone else is unauthorised. If you are not the intended recipient, please notify Airbus immediately and delete this e-mail. Airbus cannot accept any responsibility for the accuracy or completeness of this e-mail as it has been sent over public networks. If you have any concerns over the content of this message or its Accuracy or Integrity, please contact Airbus immediately. All outgoing e-mails from Airbus are checked using regularly updated virus scanning software but you should take whatever measures you deem to be appropriate to ensure that this message and any attachments are virus free. ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
RE: [PyQt] Drag Drop with QTreeWidget
and when doing so create the sub-node Folder1 if it does not exist within campaign and put the dragged items under folder1 (and not campaign where they were dropped). How to do this ? Do I do this in a dropEvent? In a dropEventAction ? you could monitor the tree using QTreeView.rowsInserted and then reparent dropped items as necessary. Hi again, I have tried but I am unable from redefining rowsInserted to reparent the items. I am having problems combining the information QModelIndex used by rowsInserted and the QAbstractModel automatically set-up behind the scenes by QTreeWidget Help ! ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt This mail has originated outside your organization, either from an external partner or the Global Internet. Keep this in mind if you answer this message. The information in this e-mail is confidential. The contents may not be disclosed or used by anyone other than the addressee. Access to this e-mail by anyone else is unauthorised. If you are not the intended recipient, please notify Airbus immediately and delete this e-mail. Airbus cannot accept any responsibility for the accuracy or completeness of this e-mail as it has been sent over public networks. If you have any concerns over the content of this message or its Accuracy or Integrity, please contact Airbus immediately. All outgoing e-mails from Airbus are checked using regularly updated virus scanning software but you should take whatever measures you deem to be appropriate to ensure that this message and any attachments are virus free. ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
[PyQt] ANN: qimage2ndarray - converting between QImages and numpy.ndarrays
Hi, I have just uploaded a first release of qimage2ndarray, a tiny python extension for quickly converting between QImages and numpy.ndarrays (in both directions). These are very common tasks when programming e.g. scientific visualizations in Python using PyQt4 as the GUI library. Similar code was found in Qwt and floating around on mailing lists, but qimage2ndarray has the following unique feature set: * Supports conversion of scalar and RGB data, with arbitrary dtypes and memory layout, with and without alpha channels, into QImages (e.g. for display or saving using Qt). * Using a tiny C++ extension, qimage2ndarray makes it possible to create ndarrays that are *views* into a given QImage's memory. This allows for very efficient data handling and makes it possible to modify Qt image data in-place (e.g. for brightness/gamma or alpha mask modifications). * qimage2ndarray is stable and unit-tested: * proper reference counting even with views (ndarray.base points to the underlying QImage) * handles non-standard widths and respects QImage's 32-bit row alignment * Masked arrays are also supported and are converted into QImages with transparent pixels. * Supports value scaling / normalization to 0..255 for convenient display of arbitrary NumPy arrays. The extension is open source, BSD-licensed, and available via PyPI or here: http://kogs-www.informatik.uni-hamburg.de/~meine/software/qimage2ndarray/ I hope this is useful to many of you and look forward to your feedback, Hans PS: Now that I am announcing this, I suddenly have the feeling that I should have talked with some lawyer (or Phil) about possible license issues because of PyQt. I really hope there will not turn out to be problems with this. ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
[PyQt] suggestion for installing 64-bit Qt-4.6.0 on Snow Leopard
For anyone interested in installing 64-bit qt-4.6.0 on Snow Leopard, it looks like the download at http://qt.nokia.com/downloads is 32-bit. After a bit of digging, I found an alternative installer at http://download.qt.nokia.com/qt/source/qt-mac-cocoa-opensource-4.6.0.dmg which installs a 64-bit library that appears to be compatible with PyQt4 and the 64-bit system python. Darren ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] Python bindings for Poppler-Qt4, pypoppler-qt4
On Tue Dec 1 10:22:24 GMT 2009, Wilbert Berendsen wrote: at http://websvn.pardus.org.tr/trunk/playground/pypoppler-qt4/?root=uludag there are Python bindings for Poppler-Qt4. I would really like to use them in my application, but I also need the links() method of the Page object working. This method (and the link classes) is not available. Any chance this nice package gets updated? Otherwise I'll try myself but then I need to learn SIP a lot better. :) I made some private modifications to this package some time ago but never got round to doing anything with them. I think Roberto Alsina has something more up to date: http://code.google.com/p/rst2pdf/ David ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] Drag Drop with QTreeWidget
NARCISO, Rui wrote: and when doing so create the sub-node Folder1 if it does not exist within campaign and put the dragged items under folder1 (and not campaign where they were dropped). How to do this ? Do I do this in a dropEvent? In a dropEventAction ? you could monitor the tree using QTreeView.rowsInserted and then reparent dropped items as necessary. Hi again, I have tried but I am unable from redefining rowsInserted to reparent the items. I am having problems combining the information QModelIndex used by rowsInserted and the QAbstractModel automatically set-up behind the scenes by QTreeWidget don't know what you're trying to do, but i had in mind something like this: import sys from PyQt4 import QtGui, QtCore CAMPAIGN_TYPE, FOLDER_TYPE, CALC_TYPE = range(1001, 1004) class TreeWidget(QtGui.QTreeWidget): def __init__(self, parent=None): QtGui.QTreeWidget.__init__(self, parent) self.header().setHidden(True) self.setSelectionMode(self.ExtendedSelection) self.setDragDropMode(self.InternalMove) self.setDragEnabled(True) self.setDropIndicatorShown(True) self.invisibleRootItem().setFlags(QtCore.Qt.NoItemFlags) parent = TreeWidgetItem(self, CAMPAIGN_TYPE) for i in xrange(1, 4): TreeWidgetItem(parent, CALC_TYPE) TreeWidgetItem(self, CAMPAIGN_TYPE) TreeWidgetItem(self, CAMPAIGN_TYPE) def rowsInserted(self, parent, start, end): QtGui.QTreeWidget.rowsInserted(self, parent, start, end) item = self.itemFromIndex(parent) if (item is not None and item.type() == CAMPAIGN_TYPE and item.child(start).type() == CALC_TYPE): child = item.takeChild(start) if item.folder is None: item.folder = TreeWidgetItem(item, FOLDER_TYPE) item.folder.addChild(child) class TreeWidgetItem(QtGui.QTreeWidgetItem): def __init__(self, parent, type): QtGui.QTreeWidgetItem.__init__(self, parent, type) if type == CALC_TYPE: text, flags = 'Calc', ~QtCore.Qt.ItemIsDropEnabled else: self.setChildIndicatorPolicy(self.ShowIndicator) self.setExpanded(True) if type == CAMPAIGN_TYPE: text, flags = 'Campaign', ~QtCore.Qt.ItemIsDragEnabled elif type == FOLDER_TYPE: text, flags = 'Folder', ~QtCore.Qt.ItemIsDragEnabled self.setText(0, text) self.setFlags(self.flags() flags) self.folder = None if __name__ == __main__: app = QtGui.QApplication(sys.argv) tree = TreeWidget() tree.resize(200, 300) tree.move(300, 300) tree.show() sys.exit(app.exec_()) ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
[PyQt] Taskbar daemon
Hi I'm fairly new to PyQt I was wondering if I could get some pointers, or directions to good tutorials or examples for the following: I want to make a daemon that runs with an icon in the system tray/notification area, how to i do this? I want to create a new filetype, which the daemon is set in the os to handle by default, and opens it without having to open it from the daemon itself (with a file dialog, etc), how do i code this? Also, are there any good pyqt tutorials or examples for SSL-sockets? Thanks, loke -- View this message in context: http://old.nabble.com/Taskbar-daemon-tp26618709p26618709.html Sent from the PyQt mailing list archive at Nabble.com. ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
[PyQt] ActiveX Question
Hello,
Does anyone know the right way to call a ActiveX function that expects
to get a argument by reference? For example, if there is a function
called getPosition(double *) how do I call this function? I thought
that I was close with:
pos = -1.0
self.dynamicCall('getPosition(double )', pos)
This does not complain about the wrong parameter type, or generate any
other warning/error messages, but it also does not change the value of
pos to 1.0 as expected. Using pos = QtCore.QVariant(-1.0) also does not
work. self is a QAxWidget object.
Any links or pointers would be appreciated.
Thank you,
-Hazen
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Re: [PyQt] Python bindings for Poppler-Qt4, pypoppler-qt4
On Thu, Dec 3, 2009 at 4:10 AM, David Boddie da...@boddie.org.uk wrote: On Tue Dec 1 10:22:24 GMT 2009, Wilbert Berendsen wrote: at http://websvn.pardus.org.tr/trunk/playground/pypoppler-qt4/?root=uludag there are Python bindings for Poppler-Qt4. I would really like to use them in my application, but I also need the links() method of the Page object working. This method (and the link classes) is not available. Any chance this nice package gets updated? Otherwise I'll try myself but then I need to learn SIP a lot better. :) I made some private modifications to this package some time ago but never got round to doing anything with them. I think Roberto Alsina has something more up to date: http://code.google.com/p/rst2pdf/ Roberto had sent me his patches and they were integrated into the binding. However, some other projects have made some mods, but not contributed back. No idea why (or whether its ethical). Regards Rajeev J Sebastian ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] Freezes and crashes with signal autoconnection
Phil Thompson-5 wrote: Either way people need a small, self-contained example that demonstrates the problem. Hi Phil, I think I've been able to isolate a small piece of code that consistently reproduces the problem. http://old.nabble.com/file/p26619445/main.py This piece of code displays a gray rectangle on my system and systematically crashes when I click on it. My config is as follows: qt-4.5.3-9.fc11.i586.rpm PyQt4-4.5.4-1.fc11.i586.rpm sip-4.8.2-1.fc11.i586.rpm I'd be very interested in understanding what's wrong here because i've been strugling for weeks with incomprehensible crashes that seem to come out of nowhere and I've not the single clue what's going on. Thanks for your support, Chris -- View this message in context: http://old.nabble.com/Freezes-and-crashes-with-signal-autoconnection-tp25716493p26619445.html Sent from the PyQt mailing list archive at Nabble.com. ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] Python bindings for Poppler-Qt4, pypoppler-qt4
On Thu Dec 3 01:07:20 GMT 2009, Rajeev J Sebastian wrote: Roberto had sent me his patches and they were integrated into the binding. However, some other projects have made some mods, but not contributed back. No idea why (or whether its ethical). Mine were quickly done for an article I was writing, though in the end, I never used the bindings. The only possibly worthwhile change I made was removing some hard-coded paths in the configure.py file. David ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
