Qt: How to correct grabbing invisible/hidden widgets?

Question

I need to grab a widget in order to save it as an image file. I use the following code:

QPixmap img = this->webView->grab();
img.save("image.PNG);

This doesn't work though when the application has been minimized or the grabbed widget is a child of QStackedWidget or QTabWidget.

Please, help me solve this problem.

score 0 · Answer 1 · answered Jun 29 '17 at 12:11

0

Try this:

QPushButton button("123");
button.resize(100, 100);
button.hide();    

QPixmap p(button.size());
button.render(&p);
p.save("1.png");

answered Jun 29 '17 at 12:11

samdavydov

I try that, before questing, but it don't work :( At now, i use next workaround: # Create new Widget – ioann sys Jun 29 '17 at 12:34
1

Can you post some more code? This tiny example works fine. Looks like smth wrong may be in another place. – samdavydov Jun 29 '17 at 12:40
Thank for your answer. I try it before questing, but not working. Now i use next workaround: 1. Create widget with attributes Qt::WA_DontShowOnScreen | Qt::WA_ShowWithoutActivating | Qt::WA_AlwaysOnTop; 2. Move webView widget to new widget; 3. grabbing from new widget; 4. moving webView to back in QTabWidget Maybe Qt have special flags or attributes like as Qt::WA_DrawWhenMinimized? – ioann sys Jun 29 '17 at 12:44

1 Answers1