empty-window-qt6-cpp

empty-window-qt6-cpp.pro

QT += core gui widgets
SOURCES += main.cpp
TARGET = app

main.cpp

/*
> qmake -makefile
> mingw32-make
> "release/app"
*/

#include <QtWidgets/QApplication>
#include <QtWidgets/QWidget>

class MainWindow : public QWidget
{

};

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    MainWindow w;
    w.show();
    return app.exec();
}