After QPixmap::grabWindow application frozen

Question

After I use this function

QPixmap::grabWindow(QApplication::desktop()->winId(),50,100,950,700);

my application is frozen and I am not able to use other button in my application. Why is that so?

Answer 1

It works with my Qt installation (4.8 on OS X 10.6.8). Make sure you have a instance of QApplication before calling anything in QtGUI.