python (65.2k questions)

javascript (44.3k questions)

reactjs (22.7k questions)

java (20.8k questions)

c# (17.4k questions)

html (16.3k questions)

r (13.7k questions)

android (13k questions)

Questions - qt-signals

QObject singleton living on main thread, invoke it's signal from another thread, is it thread safe?

as the title says, I have a Core singleton that inherits from QObject that is constructed on the main thread. I also Have a QTcpServer that is creating a new QThread for each new connection, that is w...
test-img

sadeq

multithreading

qt

qthread

qt-signals

qobject

Votes: 0

Answers: 0

Lifetime of a python object passed with a Qt signal to another thread

I have an event-producer thread, creating Event instances in that Producer thread and passing them to the GUI thread as signal argument, after moving the object to the GUI thread (in real-life code, s...
test-img

Yann Dirson

python

pyqt5

pyside2

qt-signals

Votes: 0

Answers: 2

Latest Answer

There are differences between memory management between C++ and python, in the first can use dynamic memory (typically pointers) but in the second use references. So each library (PyQt and PySide) de...
test-img

eyllanesc

Qt slot still receives signals after disconnecting

I have such problem. In my threaded application I need to disconnect slot and reconnect signal to another slot. Unfortunately if new signals send before disconnecting it will be handled in the old slo...
test-img

Ivan Romanov

c++

qt

qt-signals

Votes: 0

Answers: 2

Latest Answer

This is not a bug. Once the signal is emitted, the corresponding event requesting calling the connected slot is put to the queue in the receiver thread's even loop. When you disconnect the signal, the...
test-img

HiFile.app - best file manager

Does the requests module play a part in pytest or pytest-qt?

This has cropped up in the course of some tests. I've tried to reproduce the problem in an MRE to isolate the problem but without success. I have a test like this (simplified, but this simplified vers...
test-img

mike rodent

python-requests

pyqt5

pytest

qt-signals

pytest-qt

Votes: 0

Answers: 1

Latest Answer

I think... this sort of error is almost always caused by failing to include the pytest-qt qtbot fixture when it needs to be included. From my experiments, this is quite an insidious error, in the sens...
test-img

mike rodent

Posts

Questions

Blogs

Jobs