This is rows in my table. With this code, I get "in" in console. QSqlQuery qry; qry.prepare("SELECT * FROM user"); qry.exec(); if(qry.size() > 0) qInfo() << "in"; else qInfo() << "error"; But with this code, I get "error". QSqlQuery qry;…
I have following idea: user can edit database and when he will press exit from database he will be asked if he want to save edited database or if he edited something and then turned it back he wont be…
I have Embedded Qt applicaiton runing on my HMI screen. I am trying to execute some commands to execute in cmd. I am calling this c++ function simply from QML. Everytime I call it it hangs on process.start(). Do anyone…
I have been working on a project where I need to apply image masking that applies an effect like this: Pic1: https://i.stack.imgur.com/6zI2x.jpg Pic2: https://i.stack.imgur.com/z7IVX.jpg Mask frame: https://i.stack.imgur.com/3syEm.jpg Desired effect: https://i.stack.imgur.com/t2kO5.jpg I got it to work by using OpacityMask however to…
I have distilled this very simple CMake project that uses vcpkg and builds a dead simple Qt gui application just showing a main window. I can get it to build successfully in Visual Studio 2022 but I cannot get it…
My situation I want to build a cross platform application, with a gui, that displays a 3d view of some simple cubes, that the user can interact with. Qt seemed like a good tool for the job and I think…
Host: Ubuntu 20.04 x64 Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian Address sizes: 43 bits physical, 48 bits virtual CPU(s): 4 On-line CPU(s) list: 0-3 Thread(s) per core: 2 Core(s) per socket: 2 Socket(s): 1 NUMA node(s):…
I have the following code in QT that correctly get the webpage in Windows ( 7 x64 ) but not in Linux Debian 9.13 void Mycl::getdata() { QNetworkAccessManager *networkManager; networkManager = new QNetworkAccessManager(this); QString urlStr="https://......."); QUrl url(urlStr); QNetworkRequest request; request.setUrl(url);…
I wanna create a docker image on windows and image base [in docker file] for docker image would be linux os. My program uses the open-cv program which its output image has to be shown with CV2.imshow(). but after running…
The Qt pro file begins as follows: QT += core gui QT += serialport QT += displaysettings This builds for my Hummingboard running Debian Linux. However displaysettings isn't available for Windows builds.I want to exclude this module from windows builds.…