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c++qtscreenshotdesktopqpixmap

After QPixmap::grabWindow application frozen

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?

Solution

  • 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.