The default run() implementation in QThread runs an event loop for you, the equivalent of: class GenericThread(QThread): def run(self, *args): self.exec_() The important thing about an event loop is that it allows objects owned by the thread to receive events on their slots, which will be executed in that thread. Those objects are just QObjects, … 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
(Ubuntu) I’ve created a ~/.pylintrc file and added there [MASTER] extension-pkg-whitelist=PyQt5 It is more convenient. And now pylint applies this configuration even in my Visual Studio Code editor. Or in VSCode settings: “python.linting.pylintArgs”: [ “–extension-pkg-whitelist=PyQt5” ],
Make sure you have homebrew installed. Use the following commands: brew tap cartr/qt4 brew tap-pin cartr/qt4 brew install qt brew install pyside
Well, after some debugging I found the problem. The QMenu object it is destroyed after finish __init__ function because it doesn’t have a parent. While the parent of a QSystemTrayIcon can be an object for the QMenu it has to be a Qwidget. This code works (see how QMenu gets the same parent as the … Read more
You should be able to install the python 3 version of PyQt4 in ubuntu. Open a terminal and type: sudo apt-get install python3-pyqt4 This way you don’t have to compile Qt4 from source. I have also tested this and pyqt4 works with python3. Source: A quick search in the ubuntu repositories.
The GUI is not updated/drawn until control is returned to the Qt event loop. The event loop runs in the main thread, and is what handles interactions with the GUI and coordinates the signals/slot system. When you call a Qt function in a slot like clickStop1(), the Qt call runs, but the GUI is not … Read more
You have the following errors: The signals only work in the QObjects so it is necessary for Worker to inherit from QObject. It is recommended that QProcess not be a member of the class since we say that task 1 is being executed and without finishing you try to execute task 2 so that task … Read more
You cannot and should not modify the GUI from a secondary thread as indicated by the docs since Qt does not guarantee that it works besides that it is unnecessary to create a new thread. In this case it is better to create a QObject that emits the signal when the callback is invoked since … Read more
Please try : sudo apt install python3-pyqt5