#include <QApplication>
#include <QMainWindow>
#include <QTabWidget>
#include <QToolBar>
#include <QQuickWidget>


int main( int argc, char** argv ) {
        QApplication app(argc, argv);
    
        QMainWindow win;
        win.setUnifiedTitleAndToolBarOnMac(true);
        QToolBar tb;
        tb.addAction("bla");
        win.addToolBar(&tb);

        QTabWidget mw;
        mw.setDocumentMode(true);
        win.setCentralWidget(&mw);

        QQuickWidget *quick = new QQuickWidget;
        mw.addTab(quick, "tab2");

        win.show();
        return app.exec();
}