problem in eventFilter of QGraphicsView()

[Lykurg]

when the user press key <F1> .. i have to close the application or else user can click logout item .. like wise there are seven buttons <F2>, <F3> ,<F4> ... , each having different functions ... so i am planning to catch the event of pressing F1 ,... and try to do the option ....
why this one is not working ..? shall i use QAction instead for this ..?

well the item has to be focused to get the event - I guess. If you whant a global short cut - seems to me you whant one - use a QAction with QAction::setShortcutContext(Qt::ApplicationShortcut).