Category "qt"

Enablin vsync in qt

I'm making an application in c++ and Qt. I'd like to know if the settings below are enough to have vsync enabled automatically by Windows for qt application. ev

How to open Subdirectories in a directories by using recursive function?

My program is already works well but I want to add one more condition. The program opens a directory and display .h and .cpp files. But if there is a subdirecto

Qt missing OpenSSL 3.x support on Ubuntu 22.04

I tried to build my application which uses QNetworkManager to communicate to a server. I did not have any problems on older Linux versions but with the newest U

LNK1117: syntax error in option 'VERSION:.' with qmake

On Qt5 project using Microsoft compiler, the qmake .pro project file have DATE = $$system(wmic os get LocalDateTime > $$OUT_PWD/wmic.txt) DATE = $$cat($$OUT_

mingw32-make fails in cmd due to temporary errors of non-literal type and non-trivial destructor in open CV sources

I need to inject Open CV to Qt according to this tutorial, but at the stage mingw32-make on cmd I got en error. C:/opencv/sources/3rdparty/protobuf/src/goog

How to build QtPDF Build with bitbake (w/o qtwebengine-core)

I try to build QtPDF without building the full QtWebEngine. According to the wiki page (https://wiki.qt.io/QtPDF_Build_Instructions) a simple -no-build-qtwebeng

How to open a second QMainWindow from my first/original MainWindow?

I am creating a desktop app with Qt6 and C++ and I have my original MainWindow class. Using Qt Creator I generated ui,h,cpp for a new SummaryClass (QMainWindow)

The window i made with qt designer doesn't show up

I made this window using qt designer i did not add the code that downloads the songs yet but when I run it the window doest show up from PyQt5 import QtCore, Qt

QSqlDatabase is opened but QSqlQuery does not execute and shows error database not opened

I am working on a project. I am trying to run this query but it fails and gives the error. Here is the code: QSqlQuery* printQry = new QSqlQuery(); if

How to specify dependencies in qt_add_qml_module (CMake for Qt 6.2)

When using qt_add_qml_module to specify a QML module, how do you handle Qt modules that it depends on (e.g. QtMultimedia)? If I have class Synthesizer that exte

Qt - Add item from a second window to ListWidget in MainWindow

I have a QDialog where I can enter a Text and add it to a ListWidget inside the MainWindow after I clicked OK. Therefore I created a Method in the MainWindow cl

Qt - TableView with categories

I am looking to replicate the look of the TableView presented in this picture using Qt. The one in the picture looks to be created with Windows Forms. The mai

QT QML + C++ MVVM

As far as I know in QT QML is not possible to instantiate a C++ class in QML Component, unless it is a QQuickItem. I would not like to put all ViewModels on Vie

How to find out the screen number from qml code?

I need to find out whether the popup is visible on the screen. In Qt, I would call qApp->desktop()->screenNumber(this) within the widget class function. T

Speed differences between QStandardItemModel and QAbstractTableModel?

Can anyone explain the following: I have 2 scripts for loading a pandas dataframe in a tableview which has a filter field. The one with the standard model loads

Remove row from the model

There is a client (company). The client has contacts. You can link any number of contacts to a specific client. Let's say you open the client you need. Then you

QWebEngineView SOCKS5 proxy with authorization

Is there any way to make QWebEngineView work with SOCKS5 with authorization? I tried connecting QWebEnginePage::proxyAuthenticationRequired signal to my slot, b

QProcess does not signal stdout ready

When I launch xfreerdp process out of shell, it prints INFO messages to stdout and WARN/ERROR messages to stderr, as expected (this is just the default /log-lev

QProcess does not work if the path in argument list has a whitespace

I want to execute following command using QProcess, that works in cmd already if executed: C:\\myApplication\\tools\\dcmodify.exe -v -ie -gin -nb -ma (0010,0010

Qt for android: project error cannot run target compiler

I compile for the first time "toutchinteraction.pro" from Qt for android examples. I installed sdk manager from android studio, all my android setup are well co