Qthreadproiecte

The existing codes use worker class, and QThread() to avoid runLongTask() freezing gui. lambda works but still freezes gui, thinking of using to make it work

...just fine but with PySide when calling self.server.server_close() during the close event it gives this error: File "C:python36lib", line 41, in _fileobj_to_fd raise ValueError("Invalid file descriptor: {}".format(fd)) ValueError: Invalid file descriptor: -1 I know it has to be something real simple to fix it but I just can't seem to figure it out. I think in the Qthread is being garbage collected or not passing the value to run correctly or something. I'd just like this code to work properly and stop the server when the app is exited or for you to create a similar simple app that works like my example and use the built in socket methods that PySide offers "QTcpSocket etc" instead of using socketserver. Also, if you have a bett...

I am building an image processing application for identifying certain types of graphics. I managed to have all functions going well so far. However, since some functions require a lot of processing time it freezes my app 's graphical interface. The application is built on PyQt5 and Python programming language.

I need a simple QT example to trigger a function in the main-thread by a signal from QThread. Use the Signal/Slot principle. As the base, just use in QT-Creator the standard QWidget application (QMainWindow). 1. start a new QThread. 2. in the QThread start a while(1) loop that should trigger every 3 seconds a funktion call in the MainThread. 3. The function in the MainThread is triggert by the trigger in the while(1) loop in the Qthread. This update the lable on int count = 0; // counted label updates // The loop in the QThread: while(1) { count++; QThread::sleep(3); // trigger the function in Main-Thread here ! } // The function in the mainwindow-Thread(mainwindow): ui→label→setText(count); // update...

Thead progress bar module in Python 2.7 / Pyqt4 Summary: Module with Thead progress bar, should receive slot signal, with integer number and show percentage in the progress bar. Module Function: 1- Receive integer numbers in slot 2- Visualize Percentage in progress bar 3- Bel...Function: 1- Receive integer numbers in slot 2- Visualize Percentage in progress bar 3- Below the progress bar, you should visualize text with completed tasks, eg Completed tasks 10 of 100, 20 of 100 and complete 100 of 100. 4- Change Colors of the progress bar, the colors should change, at 40%, 80% and 100% 5- Module must run parallel to the main module sends the numbers. 6- References: QThread, Pyqt4, New Signal and Slot. NOTE: I have an example of the progress bar module running with...

QT MYSQL GUI Avoid GUI freezing by using QThread Example I have example application 3 header file 4 cpp file 1 gui file. I want you to edit code that when i add entry GUI won't freeze. Use QThread but don't sub class it just move to thread. And don't leave memory leak after process. You will need web server or xampp local server. But problem is while on local server process will be very fast that you can't realize GUI freezes or not. Prefer to use web server. Main goal is avoiding GUI freeze when processing MYSQL commands. I added all files file for QT You need database named "addressbook" You need table "addresses" You need 5 columns named "addressID" "firstName" "lastName" "email" &q...

At the moment I have a piece of code that is correctly retrieving ASINs price through ItemLookup (AWS). It's using: connect(manager, SIGNAL(finished(QNetworkReply*)),this,SLOT(handleXmlDownloaded(QNetworkReply*))); The fact is that the QThreads are not being closed, and in some devices this makes the app to crash. I need to have an optimization of my code in order to avoid overpopulation of QThreads

# General La tarea a realizar es la programación de una herramienta "configurador y generador de reportes" para la industria de gener...pasar al paso de generación del reporte. Es parte también de la tarea realizar esa "forma" de datos manuales de tal forma que sea flexible y configurable. # Conocimientos Mínimos Qt Para poder realizar la tarea, es necesario tener como mínimo experiencia utilizando las siguientes clases de Qt: • QVector, QMap, QHash y otros contenedores. • QTcpSocket y QTcpServer para comunicaciones en TCP. • QThread para ejecución de código concurrente. • QAbstractItemModel y QAbstractItemView para implementación de patrón de diseño vista-controlador. ...

I need someone who knows how to implement qthread on my project also completing mysql.

Issue of my program when i run it the gui freezes. I need someone to implement qthread so it will run i in the background and gui will still be accessible. Also completing the mysql on the table with save and edit button.

Hello, I'm making a program to view running processes on Linux in a QTableWidget. I am using a QThread to update the QTableWidget, and I've added filtering with a QLineEdit, up to there everything works. Now I've added access to a SLOT called killProcessFromLineEdit() from a button click, but what appends is that I can't access my other QLineEdit called processIdToKill, it crashes the program without any compilation notice. I wonder if it is the range of my UI objects that make the program crash when the signal contacts the slot, as the program crashes if I try to reach any Widget from the slot. I use QtCreator as environment and Linux with C++ The code can be directly browsed or downloaded from : I am

Really simple project. I'm working on a PyQt4 application but can't get any signals to send from a QRunnable to a QThread object. They just sort of disappear. Send me a PM with a quick guess as to what the problem might be and I'll give you the code. This is like a 20 minute project for someone who knows Qt4/PyQt4, so my max budget is $30