@CristianMaureira @JonB Sorry... I mean

@JonB argh! I spend a whole day yesterday to figure out how to make it work, and all I needed to do is to write mySignal=Signal() not in the init, but in the class body! Jeeeez. Thanks a lot! Your advices and link helped!

@Dariusz Filters are flags so if you want to get directories and not dotanddots then use: it = QDirIterator( dirPath, QDir.Dirs | QDir.NoDotAndDotDot, flags=QDirIterator.Subdirectories ) If you want files: it = QDirIterator( dirPath, QDir.Files | QDir.NoDotAndDotDot, flags=QDirIterator.Subdirectories ) Same: it = QDirIterator( dirPath, ["*.exr"], filters=QDir.Files | QDir.NoDotAndDotDot, flags=QDirIterator.NoIteratorFlags )

Okay thanks, I will try it

Thanks @SGaist! I just got a solution on StackOverflow, so I’m marking this as solved, but it’s always great to see how the pros do it, so I’m definitely reading about KExtraColumnsProxyModel too 😊

Hey @ndias, I am trying to attach to a QQuickWindow. After some more try & error I finally managed to get it working by using createWithInitialProperties like so: initialProperties = {"parent": window.contentItem()} object = component.createWithInitialProperties(initialProperties, engine.rootContext())

@JonB Yeah,I abandoned the monkey patching thing. It's not a good way to edit widgets. I'll follow your promote solution.I'll try google it.I didn't even know there is a promote feature before. I'm not a native english speaker,hope my codes and typos didn't make you angry. Really appreciate the help of yours.Thanks alot.

You should try to comment on the GItHub issue to see if you can get more details of how it was done ?

Did you try to run your application through gdb to learn where exactly it crashed ?

@ThePyGuy Hi Im not sure its possible as QMenu get all the events when open. https://forum.qt.io/topic/34557/solved-prevent-qmenu-from-being-modal

@ben80 said in Use two QT5.x versions in parallel: @jeremy_k said in Use two QT5.x versions in parallel: What's the reason for using different versions of Qt 5? Going down this route opens up a class of problems involving incompatible intermingling. @jeremy_k said in Use two QT5.x versions in parallel: Option 4) Have you looked into using a virtualenv for the python program? Apt-get won't install into it, but pip will. This encapsulates the library path mangling, although the same environment pollution problem exists for child processes. It seems like there is so much that i can do wrong here. I am running this raspberry only at my home, so i am not distributing it. As long as i have a working solution (not too messy) it's ok for me. That's the best version of an unfortunate scenario. If you're careful about not executing other programs, the environment variable issue is manageable. Python modules that use external commands to discover bits of system configuration appears to be common. For example, https://github.com/pyinstaller/pyinstaller/issues/4657. QDesktopServices::openUrl() failing to work is another one to watch for. I cannot use pip on the raspberry, since there are no ARM packages for PySide2 provided. Therefore i am using apt-get. I am also using a pyenv virtualenv, but i need to copy the site-package files manually. Not nice, but it works. It might be reasonable to tell apt-get to install into the venv directory as an alternative root. For dpkg, the option appears to be --root=<alternative root>.

Try with: MAX_HEIGHT = 4096 # Arbitrary value class HeaderView(QHeaderView): def __init__(self, parent=None): super().__init__(Qt.Horizontal, parent=parent) self.setStyleSheet( "QHeaderView::section{background-color: #ffffff; " "font-weight: bold; " "padding-left: 2px; " "color: #3467ba; " "border:0px; " "border-left: 1px solid #ababab; " "border-bottom: 1px solid gray;}" ) self.setStretchLastSection(True) self.setDefaultAlignment(Qt.AlignCenter | Qt.Alignment(Qt.TextWordWrap)) def sectionSizeFromContents(self, logicalIndex): text = self.model().headerData(logicalIndex, self.orientation(), Qt.DisplayRole) alignment = self.defaultAlignment() metrics = QFontMetrics(self.fontMetrics()) width = metrics.boundingRect(QRect(), alignment, text).width() heights = [] for i in range(self.count()): text = self.model().headerData(i, self.orientation(), Qt.DisplayRole) size = self.sectionSize(i) rect = QRect(0, 0, size, MAX_HEIGHT) heights.append(metrics.boundingRect(rect, alignment, text).height()) height = sorted(heights)[-1] return QSize(width, height)

@raphasauer I have the same issue. Could you solve it?

@QueTeeHelper Exactly right, those are the comments I would have typed if it were my code :)

@kshegunov said in Odd issue, thread worker & timmer not running properly: Does the timer start at all? Does the thread start at all? the timer.start() gets called. But after that silence... Maybe everything gets deleted somewhere?

@JonB said in How to create custom widget plugin for Qt Designer with Qt for Python?: You may have your own good reasons for wanting to use Python, but I don't know what you are implying here. A C++ solution would indeed work, and allow custom widget design for use in Designer, across all these platforms. Ok, I see that I put it in unclear way. I meant to say I already have several different widgets created with python and don't wish to re-write them in C++. I agree with you that I may re-create it with C++ and it will work but I really don't wish to do it. Thanks for the link to stackoverflow, I'll take a look there. Promotion works good but it's not so comfortable to fine-tune placement of different parts in UI - this is why I'm looking for other possible options.

It depends on how you create your project/file. If you create a project of the type Application "Qt for Python", you will end up with a main.py where PySide2 is imported and I could not find the template file in the Qt installation files. If you simply create a new file of the type Python | Python Class you will be offered to choose between PyQt5 and Pyside2. The template file is in your Qt installation folder: Qt\Tools\QtCreator\share\qtcreator\templates\wizards\classes\python. Sorry, QtCreator is great but not perfect for Python yet from what I can tell :-/

@iwrwrc There are better ways of doing this than your approach. You have chosen to sacrifice the ability to re-edit the design at any future date. Up to you, it's not what I would have done. You have quoted QWidget(self) I don't know why, and my suggestion that the most likely might be an "unpositioned" widget declared like this but never added still remains. And of course it might have something to do with whatever you did to QTabWidget/QTabBar.

thank you each for your responses @SGaist said in QFormBuilder was unable to create a custom widget of the class 'QVideoWidget': What step did you use to create the original file that works with PyQt5 but not PySide2 ? Is it only a bug in Qt Creator or does it also fail at run time ? making a new project in qt-creator using python auto-generates the code for PyQt5, then i switched the imports to PySide2, and changed the uic method of loading UI for the QUiLoader method. everything else remains completely untouched, and 100% of everything else seems to be perfectly functional without producing any error the application will continue to run and function perfectly normal, but the widget won't appear. it's more of an 'ignore' than a 'fail'. from the bug report responses it seems maybe there just -isn't- a QVideoWidget for PySide2? @JonB said in QFormBuilder was unable to create a custom widget of the class 'QVideoWidget': you do not have to be able to put a widget on a Designer form or make it work with Promote to use it. Before you say you might abandon the whole Qt approach, are you aware that you can indeed create desired widget type at runtime even if you cannot see it/do so at design-time? i am aware, it's what i spoke of in this quote, though the way i worded it could have been more clear and could lead to confusion. @publicname40828 said in QFormBuilder was unable to create a custom widget of the class 'QVideoWidget': however, in the mean time i've figured out how to neatly embed QVideoWidget declared in python within an existing UI outside of qt creator i declared the QVideoWidget in python providing the ui as a parent (in arg), then used setGeometry to make it fit the exact location of the widget that was made in the form.ui. this is the only Widget that isn't working for me in the transition from PyQt5 to PySide2 so migrating the project will no longer be necessary, and being able to get the exact geometry in a glance in qt-creator made it a relatively quick fix

@Samuel-Bachorik I tried it, but I have the same problem, ehwn I try to execute the .exe file a message box open saying "Failed to execute script"

Did you ever find a fix? Mine is doing the exact same thing.

@Haujet-Zhao I don't know whether it's "supposed" to work in PySide. PyQt5 is more robust/has more support for other libraries. Have a read anyway of the (only) reply to https://stackoverflow.com/questions/63502837/pyqt5-app-using-timer-to-run-a-function-with-a-loop-makes-it-freeze-up, as possible way forward for PySide2/6?

@anoop1 As I said, how do you expect Python's Cmd.cmdloop to interact with Qt's event-driven system and windows/widgets?

@Black-Cat You gorgot to connect the clicked signal from the new button...

@eyllanesc said in PySide2 & Threading... how to set data on widget from thread?: @Dariusz said in PySide2 & Threading... how to set data on widget from thread?: Do not implement the same logic in the same class so "manager" should only process the data and send it, then connect that signal to the GUI so that it updates the information. Class Worker(QObject): sendData = Signal(str) def process(self): value = "foo" self.sendData.emit(value) class GUI(QWidget): def apply_data(self, text): self.foo.setText(text) worker = Worker() thread = QThread() worker.moveToThread(thread) gui = GUI() worker.sendData.connect(gui.apply_data) QTimer.singleShot(0, worker.process) By default in the connection AutoConnection is used so since the sender lives in the second thread and the receiver in the main thread then QueuedConnection will be used. Hmmm thank you, but will this work with python Thread ? As the worker thread, I got is not Qt...

@john14 QWidget::setDisabled(bool disable) or setEnabled(bool) are avialble to any QWidget, including a QDialog. If that is what you are wanting.

@JonB Thanks for your reply, My question is if i don't need to implement setHeaderData() and my code shouldn't call it, How to make ListView{} call it and set displayed data with header's text (i attached picture for code of main.qml).

@SGaist I don't know how to call it before, now I found using super().paintEvent(arg__1) can solve it.

Need to organize main.qml file that imports nested files of subdirectories. If you have in main.qml: import "qmlFiles" as Uqmls then inside qmlFiles/ directory you have some.qml file and qmlDir, then there inside this file: import "qmlDir" as UDir Is better to organize by this way: dir/ of your main.qml file. dir/subdir/ for import from main.qml file dir/subdir/subdir/ for import from files that are in the dir/subdir/

@eyllanesc I feel quite dumb. Changing MouseArea.onClicked to onClicked fixed the problem. Thanks for the help to everyone who replied.

@Abdulrahman Not my area, perhaps this question should be posted to the QML sub-forum, if you don't get an answer here in a while? (except to say: if you have the row, column & model, model->index(row, column) delivers the QModelIndex, if that helps from QML.)

Looks like you installed all your stuff in the base conda environment which is a bad idea. I would recommend re-install conda cleanly and create a proper environment to install PySide2.

sorry miss part of my code please ignore

@daisyvish said in show other program result in QWindow: how to check environment variables for QT? You mean in "in QtCreator"? @SGaist did not ask about environment variables specific for Qt, but any variables which can influence Python. Go to "Projects/YOUR_KIT/Run/Run Environment" and compare the environment variables there to what "set" outputs in cmd.exe

@Tony32423 said in How to tell Qt/PySide2 where to look for the qt.conf file on Windows?: Usually this is fine as qt.conf is in the same folder as python.exe I'm sorry I'm not providing any solution here, but this sounds awful! Why would a Qt configuration file be placed in the same directory of the general python.exe program? Something similar happens with PyQt5 in that it doesn't pick up the qt.conf file from the arguments, but it does at least default the locations to its own copy of the qt libs in its site-packages folder. This sounds much better. The qt.conf file should surely be placed somewhere inside Qt stuff.

I highly encourage you to learn the signals and slots paradigm. Qt is an asynchronous framework which means that you may not need an additional thread depending on what you need to process and how you process it. Did they warm you about the nuclear footgun that it can be ? ;-)

@andre_sophia Glad it solved. Yes, in the normal course do all your connect()s in the __init__(), after the setupUi(), so it's just once.