[Qt-interest] Menu bar on QtCreator created GUI

[OS Prog]

Hi,

I've created a GUI with the Qt Creator and I've put some items under
the Menu Bar. On the QtCreator Designer window it looks OK, but when I
run the application the items are not click-able. They are not
disabled (grayed out), but when I click on them nothing happened.

Do I have to set something in order to make them working?

Regards,
Nik