Adding qframe with widgets to status bar

[binaural]

Hi,

I have following problem:
I would like to add to status bar custom widgets (mainly qlabels) with setFrameStyle setup. At the rigth corner there should be checkbox + progress bar which have also frame but both of them. I try it this way (just for testing) but widgets (btn and btn1) aren't displayed. There exist some way how to do this cleanly?

QLabel *lbl = new QLabel("Label");
    lbl->setFrameStyle(QFrame::Sunken | QFrame::Box);
    ui->statusBar->addWidget(lbl);
 
 
    QFrame *frame = new QFrame();
    frame->setFrameStyle(QFrame::Sunken | QFrame::Box);
    frame->setGeometry(50,-2,100,15);
 
    QPushButton *btn = new QPushButton(frame);
    btn->setText("This is button");
 
    QPushButton *btn1 = new QPushButton(frame);
    btn1->setText("This is button 1");

QLabel *lbl = new QLabel("Label");
    lbl->setFrameStyle(QFrame::Sunken | QFrame::Box);
    ui->statusBar->addWidget(lbl);


    QFrame *frame = new QFrame();
    frame->setFrameStyle(QFrame::Sunken | QFrame::Box);
    frame->setGeometry(50,-2,100,15);

    QPushButton *btn = new QPushButton(frame);
    btn->setText("This is button");

    QPushButton *btn1 = new QPushButton(frame);
    btn1->setText("This is button 1");

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Thanks