How do I print long widgets continuously without cutoff?

[wanyeop]

At QT(5.12), I made the ui with QWidget. And I want to print the ui with my printer. But, The ui is too long to print on one page.(height is greater than the A4 size) I want continuous prints without newPage() function.

I use QPrinter and QPainter. But, The result I received was a cropped widget image. Is there any option or code that prints automatically on the next page like MS Word?

QPrinter printer;
QPainter painter;
printer.setPaperSize(QPrinter::A4);
printer.setFullPage(true);

QPrintDialog printDialog(&printer);
if (printDialog.exec() == QDialog::Accepted) {
    painter.begin(&printer);
    ui->scrollArea->widget()->render(&painter);
}