ApplicationWindow size policy?

[der Uhu]

Hallo!

I'm learning qml and I got stuck at one very unpleasant thing: when I manually shrink application window first it behaves as expected (just shrinks spacers between items) but when spacers are to a minimum, then it just proceeds shrinking the window hiding some widgets. In QT I can prevent shrinking a window if it would hide some of the widgets, by setting proper size policy. And I cannot find anything similar to size policy in qml. Where to search?

Best regards.