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 pixmap;
 pixmap.copy(rectangle); // rectangle is part of QWidget, which I need to save
 pixmap.save("example.png");

Thank you for help.

score 25 · Accepted Answer · answered Apr 30 '12 at 10:16

25

You can use QWidget::render for this. Assuming rectangle is a QRect:

QPixmap pixmap(rectangle->size()); 
widget->render(&pixmap, QPoint(), QRegion(rectangle));

answered Apr 30 '12 at 10:16

Mat

how do you save it to a file? – bachurim09 Aug 13 '12 at 08:24
@bachurim09: the code in the question does that. Please also check the docs for QPixmap. – Mat Aug 13 '12 at 10:04
2

In a nutshell, that's: `pixmap.save("Hello.jpg");` The docs are located at http://qt-project.org/doc/qt-5.0/qtgui/qpixmap.html. – Josh Jan 16 '14 at 21:31

score 8 · Answer 2 · edited Nov 14 '19 at 11:50

8

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

edited Nov 14 '19 at 11:50

iammilind

answered Nov 29 '18 at 12:12

Valentin H

Genius ! I'm making my widgets drag-n-dropable. And the mime data has an icon that you can set, which shows up under the cursor when you drag outside of the container. – MathCrackExchange Apr 28 '19 at 00:50

2 Answers2