It looks like you want setItemPrototype. This provides an item factory for the model, so that it will implicitly use your custom class whenever necessary. All you need to do is reimplement clone() in your item class: class MyItem(QtGui.QStandardItem): ”’This is the item I’d like to drop into the view”’ def __init__(self, parent=None): super(MyItem, self).__init__(parent) … Read more
They are not copies. If you check the type of those, you’ll see that the class attribute is PySide.QtCore.Signal and the instance attribute is PySide.QtCore.SignalInstance. print “type(obj1.sig): {}”.format(type(obj1.sig)) print “type(obj2.sig): {}”.format(type(obj2.sig)) print “type(Klass.sig): {}”.format(type(Klass.sig)) # type(obj1.sig): <type ‘PySide.QtCore.SignalInstance’> # type(obj2.sig): <type ‘PySide.QtCore.SignalInstance’> # type(Klass.sig): <type ‘PySide.QtCore.Signal’> This is necessary because of the way Qt defines … Read more
I think you may be mistaken. You want the work you’re doing in a separate thread so it doesn’t freeze the application. But you also want to be able to update the progress bar. You can achieve this by creating a worker class using a QThread. QThreads are able emit signals, which your UI can … Read more
This is an example Qt application demonstrating sending signals from a child process to slots in the mother process. I’m not sure this is right approach but it works. I differentiate between process as mother and child, because the word parent is alread used in the Qt context. The mother process has two threads. Main … Read more
You seem to need an OSX .app for this to work, as the Info.plist file in there contains the user-visible name for the application that is put there. This defaults to Python, which is the title you see for the program menu. This blog post outlines the steps you need to take, while the OSX … Read more
If you want to use multiprocessing as a frozen executable, you need to call multiprocessing.freeze_support() at the beginning of your main script. This will allow multiprocessing to “take over” when it spawns its worker processes. See also https://github.com/pyinstaller/pyinstaller/wiki/Recipe-Multiprocessing
If you’re coming here from Google and not having luck with the accepted answer, that’s because you’re missing the other secret invocation: QScrollArea::setWidget. You must create and explicitly identify a single widget which is to be scrolled. It’s not enough to just add the item as a child! Adding multiple items directly to the ScrollArea … Read more
UPDATE: The original solution below was written for PySide (Qt4). It still works with both PySide2 (Qt5) and PySide6 (Qt6), but with a couple of provisos: The connectSlotsByName feature requires that the corresponding slots are decorated with an appropriate QtCore.Slot. Custom/Promoted widgets aren’t handled automatically. The required classes must be explicily imported and registered with … Read more
This answer is thanks to Matthias BUSSONNIER from the ipython-users mailing list. When I close the window of the running demo application, I see this error: An exception has occurred, use %tb to see the full traceback. SystemExit: 0 Just don’t use sys.exit(0) as you are not exiting python, but still running IPython. Add it … Read more
To get the latest PySide, install one of the official binary wheels from PyPI which includes a bundled Qt and is therefore fully portable. For Qt5 – [Python 2.7 / Python >= 3.5]: pip install pyside2 For Qt6 – [Python >= 3.6]: pip install pyside6 The information presented in the section below relates to PySide-1.2/Qt4 … Read more