QPushButton aligment to the topright corner - qt

Question

I've 3 QFrame in the mainwindow, the frames looks like this:
I'd like to set a 60x20 QPushButton to the QFram I top right corner. I also resize the window and the frames resizes with the window.
I don't want to resize the push button, when the window resize.
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent), ui(new Ui::MainWindow) {
ui->setupUi(this);
window = new QWidget;
frame1 = new QFrame(window);
frame2 = new QFrame(window);
frame3 = new QFrame(window);
//check purpose
frame1->setFrameStyle(QFrame::Box);
frame2->setFrameStyle(QFrame::Box);
frame3->setFrameStyle(QFrame::Box);
button = new QPushButton(frame1);
button->resize(60,20);
setCentralWidget(window);
}
void MainWindow::resizeEvent(QResizeEvent *e) {
window->resize(e->size());
frame1->setGeometry(0, 0, e->size().width() * 0.5, e->size().height() * 0.4);
frame2->setGeometry(0, e->size().height() * 0.4, e->size().width() * 0.5, e->size().height() * 0.6);
frame3->setGeometry(e->size().width() * 0.5, 0, e->size().width() * 0.5, e->size().height());
}

Answer 1

Assuming button is the QPushButton you want to appear in the top right of frame you can probably use something like the following (untested)...
button = new QPushButton(frame1);
button->setFixedSize(60,20);
button->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
auto *layout = new QGridLayout(frame1);
layout->setContentsMargins(0, 0, 0, 0);
layout->setMargin(0);
layout->setSpacing(0);
layout->addWidget(button, 0, 1);
layout->setRowStretch(1, 1);
layout->setColumnStretch(0, 1);
Note the use of QWidget::setFixedSize rather than QWidget::resize.