<![CDATA[Invalid use of non-static member function]]>Hi i am doing one little example to capture some pictures improved by me.
QPixmap captura;
captura = QScreen::grabWindow(QApplication::desktop()->winId());
But show me this:
invalid use of non-static member function

I think QApplication::desktop()->winId() is outdate?
Bye.

]]>https://forum.qt.io/topic/72115/invalid-use-of-non-static-member-functionRSS for NodeWed, 22 Apr 2026 10:37:07 GMTSun, 09 Oct 2016 12:41:47 GMT60<![CDATA[Reply to Invalid use of non-static member function on Sun, 09 Oct 2016 14:12:00 GMT]]>Solved thx for the documentation!

]]>https://forum.qt.io/post/352841https://forum.qt.io/post/352841Sun, 09 Oct 2016 14:12:00 GMT<![CDATA[Reply to Invalid use of non-static member function on Sun, 09 Oct 2016 13:09:18 GMT]]>@Jeronimo
To add to @kenchan here is a link to QScreen documentation and there is actually an example available.

]]>https://forum.qt.io/post/352839https://forum.qt.io/post/352839Sun, 09 Oct 2016 13:09:18 GMT<![CDATA[Reply to Invalid use of non-static member function on Sun, 09 Oct 2016 12:55:30 GMT]]>grabWindow is not a static function of QScreen. hence the error.

you need to get the screen from the application object and then grab it.

]]>https://forum.qt.io/post/352837https://forum.qt.io/post/352837Sun, 09 Oct 2016 12:55:30 GMT