How to create screenshot of QWidget?

Question

I work at my homework in Qt Creator, where I paint to QWidget and I need to save some part of this QWdiget.

I tried to solve this problem:

 QPixmap pixma         


        

Answer 1

From QWidget::Grab:

QPixmap QWidget::grab(const QRect &rectangle = QRect(QPoint(0, 0), QSize(-1, -1)))