QApplication In Non-Main Thread

Question

I need to exec() a QApplication in a thread that is not main (my GUIs must be plugins that can be dynamically loaded and unloaded at runtime, so I have no access to the main

Answer 1

Adding my 2 cents with a fancy lambda and C++ threads:

#include "mainwindow.h"
#include 
#include 

int main(int argc, char *argv[])
{
    std::thread t1
    (
        [&]
        {
            QApplication a(argc, argv);
            MainWindow w;
            w.show();
            return a.exec();
        }
    );
    t1.join();
}

Here Mainwindow can be your QMainWindow.