http://blog.gmane.org/gmane.comp.python.pyqt-pykde hourly 1 1901-01-01T00:00+00:00 http://gmane.org/img/gmane-25t.png http://gmane.org http://comments.gmane.org/gmane.comp.python.pyqt-pykde/13067 Aminu D 2008-09-06T18:03:18 http://comments.gmane.org/gmane.comp.python.pyqt-pykde/13065 projetmbc< at >club-internet.fr 2008-09-06T16:15:06 http://comments.gmane.org/gmane.comp.python.pyqt-pykde/13061 Hi, can someone help me with this i'm new to Qt so it could be something simple.. -- from PyQt4.QtGui import * app = QApplication([]) mainWin = QMainWindow() mainWin.showMaximized() menu = mainWin.menuBar() menu.addAction("test") frame = QFrame(mainWin) frame.move(0, menu.height()) Vsplitter = QSplitter(frame) testlbl = QLabel('test') Vsplitter.addWidget(testlbl) mainWin.show() app.exec_() -- The problem is that the 'test' label doesn't show up because of the showMaximized call. If I put that at the end of everything else, the test label shows up. Or if I leave it out, run it, then click the maximize button the test label is still there. In my actual app I can't just put showmaximized at the end because some things will need to be added dynamically. Also, the reason I use the frame is that if I don't, the test label and the menu bar try to take up the same space.. thx -inhahe inhahe 2008-09-06T05:08:51 http://comments.gmane.org/gmane.comp.python.pyqt-pykde/13055 Jake Richards 2008-09-05T21:19:22 http://comments.gmane.org/gmane.comp.python.pyqt-pykde/13052 Few weeks ago I posted here to find help about a problem with my application [http://www.mail-archive.com/pyqt< at >riverbankcomputing.com/msg14774.html] : running the very same code on different operating systems produced different results. In particular on Fedora9 and Mac-OsX my program never registered sqlite db variations on disk, using Qt4's APIs, while every thing worked fine on Fedora 8 and Windows. No one answered to me and I was hopeless to find a solution. So I rolled back onto older versions of my software, till I found a version that worked every where. Then applying one by one all the differences to my code, I was able to identify the cause, but I wasn't able to understand it, so I ask an other time for help. This is the 'wrong' code: self.connect(self, QtCore.SIGNAL("customContextMenuRequested(const QPoint &)"), lambda coord: self.ctxmenu.popup(self.mapToGlobal(coord))) I had to substitute it with: self.connect(self, QtCore.SIGNAL("customConte IloChab 2008-09-05T20:05:13 http://comments.gmane.org/gmane.comp.python.pyqt-pykde/13051 So, using PyQt4/WindowsXP: I'm attempting to adapt the basic drawing example for the simple purpose of drawing an arc on the background of a widget. The following code opens a main window with a child widget inside, but doesn't draw the arc. Probably something simple that I'm missing, but I can't spot it... My eyes are crossing from reading the documentation and attempting different things. What have I missed? import sys from PyQt4 import QtGui, QtCore class GroupDialog(QtGui.QWidget): def __init__(self): QtGui.QWidget.__init__(self) self.setBackgroundRole(QtGui.QPalette.Base) self.drawMe() def drawMe(self): self.update() def paintEvent(self, event): rect = QtCore.QRect(10, 20, 80, 60) self.pen = QtGui.QPen(QtCore.Qt.blue) self.pen.setWidth(2) self.pen.setCapStyle(QtCore.Qt.RoundCap) self.pen.setStyle(QtCore.Qt.SolidLine) startAngle = 30 * 16 arcLength = 1 Scott Price 2008-09-05T18:47:31 http://comments.gmane.org/gmane.comp.python.pyqt-pykde/13050 Hi there, I'm running WindowsXP. So using PyQt4x I set up a toolbar, add a line edit to it, set the geometry and sizepolicy of the line-edit widget, and watch as the toolbar promptly ignores any directions I give the child widget! Is there a secret to making the toolbar respect the size policies and geometry that is set on its child widgets? I suspect (not sure about this) that in the process of re-parenting the child widget when adding to the toolbar those are being reset to some default, but the documentation neither explains this nor hints at it. Sample code: vMax = QtGui.QSizePolicy() vMax.setVerticalPolicy(QtGui.QSizePolicy.Minimum) vMax.setHorizontalPolicy(QtGui.QSizePolicy.Minimum) goGroup = QtGui.QGroupBox() goGroup.setGeometry(QtCore.QRect(0,0,350,30)) goGroup.setFlat(True) goGroup.setTitle(self.tr("Go To:")) layout = QtGui.QHBoxLayout() goTo = QtGui.QLineEdit() layout.addWidget(goTo) Scott Price 2008-09-05T18:47:31 http://comments.gmane.org/gmane.comp.python.pyqt-pykde/13049 Jens Wennberg 2008-09-05T10:00:38 http://comments.gmane.org/gmane.comp.python.pyqt-pykde/13044 I'm facing a problem with data from a SQL database and my GUI. Let's assume I have the following key => value dict: sqlresult = {1: 20080909, 4: 202020, 5: 'bla', 6: 'blubb'} How do I link it to a QComboBox? In HTML this would be the standard <select> procedure: <select> <option value="1">20080909</option> <option value="4">202020</option> </select> As far as I know there is no such thing like "value" for a QComboBox. My guess would be to create a dict that links the two objects. Then I could basically do something like this: selectedValue = sqlresult[CBIndexToKey[QComboBox.selectedIndex()]] But I feel a little bit uneasy about this... isn't there a better way? Regards, Sven Grunewaldt ...by the way... How do I respond to something in this mailing list? When I just click Reply I send a mail directly to the user who sent the original message. (Sorry Phil!) Do I just click "Reply" and change the receiver to pyqt< at >riverbankcomputing.com? I don't understand how programs like Thunderbird create the (very Sven Grunewaldt 2008-09-04T18:25:24 http://comments.gmane.org/gmane.comp.python.pyqt-pykde/13043 Vinod Khare 2008-09-04T17:19:57 http://comments.gmane.org/gmane.comp.python.pyqt-pykde/13042 Hello world, I got a (beginner?) problem initializing some objects, for instance of the class KAboutData: *works: from kdecore import KAboutData (how to be sure of the kdecore version used? I suspect it's from kde 3, help(KAboutData) is not explicit) *does not work, although is favoured by documentation [0]: from PyKDE4.kdecore import KAboutData'. (help(KAboutData) refers to kde4 classes) However, it seems I cannot use both kinds of imports in the same program (both wrap the QObject class...). So, should I use only the first kind of import ? Will it work ? I join a small test generating errors on a debian and an ubuntu: % python test.py pykde4 -> debian sid/experimental on sept 4th 2008 : TypeError: argument 1 of KAboutData() has an invalid type Python 2.5.2 python-kde4 4.0.2-1-1 python-sip4 4.7.7-1 TypeError: argument 3 of KAboutData() has an invalid type kubuntu 8.4 Python 2.5.2 python-kde4 4:4.0.3-0ubuntu1.2 py Feth AREZKI 2008-09-04T14:29:55 http://comments.gmane.org/gmane.comp.python.pyqt-pykde/13038 If I understand correctly, there is currently no way to "handle" python exceptions that occur inside a python member function when called via a c++ virtual function. %MethodCode is insufficient because it is never called when the member function is called via a c++ virtual function. %VirtualCatcherCode is insufficient because you have no access to sipCpp, sipSelf, etc. I think a workable solution would be a new directive %VirtualErrorCode. A generated virtual function with %VirtualErrorCode could look like the following void sipMyClass::myVirtualMember() { extern void sipVH_MyModule_1(sip_gilstate_t,PyObject *); sip_gilstate_t sipGILState; PyObject *meth; meth = sipIsPyMethod(&sipGILState,&sipPyMethods[16],sipPySelf,NULL,sipNm_MyModule_myVirtualMember); if (!meth) { MyClass::myVirtualMember(); return; } bool isError = false; sipVH_MyModule_1(sipGILState,meth,&isError); if( isError ) { // %VirtualErrorCode inserted here } } T Matt Newell 2008-09-03T21:31:38 http://comments.gmane.org/gmane.comp.python.pyqt-pykde/13036 Hello all, im just learning pyqt and after tons of reading, especially on the windows bindings for cross dev compatibility I finally decided to give pyqt4 a try now keep in mind im doing this on a windows box, I downloaded a ton of tutorials, howtos, etc and everything seemed to work as expected, but enter my first attempt at duplicating a couple of basic features to make sure I had it. using qt designer on windows I created a form with a button (the famous "hello world!" button) and made an attempt to connect the clicked() signal of the button to the close() slot of the form. saved my .ui file pyuic4 converted my .ui file to a _ui.py file and then I wrote the main .py file to launch the app. the form with button launches fine clicking on the button hides/closes the button, NOT the form like I thought it should. I havent been home to check this same behavior on a linux box so it may well be a windows specfic thing Ive attached the .py and the _ui.py files to this question, so can someone explain wh Rance Hall 2008-09-03T19:43:12 http://comments.gmane.org/gmane.comp.python.pyqt-pykde/13035 Mark A. Schmucker 2008-09-03T19:24:35 http://comments.gmane.org/gmane.comp.python.pyqt-pykde/13024 I've noticed that If I try to use bindTexture on QPixmaps that are large (the size of the screen), and then display them on a quad, only a portion of the texture actually shows. The rest of the surface is either black or a scrambled jumble of other textures. If I use a smaller image there is no problem, but I can't find any references to a max texture size in the documentation. I tried increasing the texture cache size but that had no effect. Is there a limit on texture size, and if so, how do you determine it? Brian Parma 2008-09-02T19:49:54 http://comments.gmane.org/gmane.comp.python.pyqt-pykde/13023 Hi Phil, The documented behavior of sip/pyqt - to keep strong references to slots except instance methods - isn't desirable from our project's point of view. Is there any easy way to patch SIP to disable this behavior? We'd like closures, lambdas, etc. to be garbage collected if no other strong reference remains to them. Thanks, Charles from http://www.riverbankcomputing.co.uk/static/Docs/PyQt4/pyqt4ref.html#pyqt-slots-and-qt-slots Note that when a slot is a Python callable its reference count is not increased. This means that a class instance can be deleted without having to explicitly disconnect any signals connected to its methods. However, if a slot is a lambda function or a partial function then its reference count is automatically incremented to prevent it from being immediately garbage collected. from http://www.riverbankcomputing.co.uk/static/Downloads/sip4/ChangeLog 2007/07/14 15:31:37 phil Rather than only lambda functions being given an extra reference when used as a slot charles matthew chen 2008-09-02T18:30:20 http://comments.gmane.org/gmane.comp.python.pyqt-pykde/13022 Gustavo A. Díaz 2008-09-02T17:28:16 http://comments.gmane.org/gmane.comp.python.pyqt-pykde/13019 I have created a simple test case which triggers a likely bug in PyQt. As the case demonstrates, I have a class template "PropertyValue" which I wrap and use with QVariant. When I run the test program ("tst.py") however, there is a segfault in the PropertyValue copy constructor. The reason as far as I've been able to tell is that PyQt doesn't register its own metatype for "StringValue" (PropertyValue<QString>), since this is already constructed for the C++ type (see qobject.sip, line 1479), with chaotic results (the C++ copy constructor receives a raw PyObject for the right-hand-side argument). Arve Arve Knudsen 2008-09-02T09:29:00 http://comments.gmane.org/gmane.comp.python.pyqt-pykde/13015 Hello Phil, I'm busy working on integrating Python with Plasma in KDE 4. The API for doing network distributed applets is a bit convoluted, there is a lot of delegation of methods calls to other objects. I've hit a part where it would be really handy if I could call protected methods on objects which were not created by Python itself. SIP appears to explicitly prevent this kind of access, although I've commented out the check in getComplexCppPtr() and it appears to work fine. * Is there a technical reason why this is forbidden? or is it more philosophical? * I would like an official way in SIP to call protected methods/functions regardless of where the object came from. Perhaps, just a way to "unlock" an instance making all of its method available. Is this possible? cheers, Simon Edwards 2008-09-01T20:29:37 http://comments.gmane.org/gmane.comp.python.pyqt-pykde/13014 Hi, I have a form in which I use a QDataWidgetMapper object. When I try to submit values from the form back to the DB, no data gets written. However, mapping field values from my DB to the widgets on the form behaves flawlessly. (See attached source code file. The Postgresql schema for the table in question is listed at the top of the file. It's only 3 fields long.) Am I missing something obvious? I've tried to peek inside using queryModel.lastError(), but it's returning a memory address. Not sure how to get a string from this method. I hope someone on the list can help shed light on this problem. Thanks in advance! Scott Scott Frankel 2008-09-01T16:40:40 http://comments.gmane.org/gmane.comp.python.pyqt-pykde/13000 KTextEditor works with an interface class -- implementors of the interface subclass KTextEditor::View and KTextEditor::Document, with the subclasses also inheriting from any interfaces that they choose to support. This is a problem -- I can't see a way to cast to the required type. Even though I can check at run-time whether my view implements an interface with something like: True I cannot use anything to cast to the appropriate type to get at the methods provided by the interface. Is there a solution to this problem? Regards, Paul Paul Giannaros 2008-08-29T22:02:04 Search the mailing list at Gmane query http://search.gmane.org/?group=$group=gmane.comp.python.pyqt-pykde