Hi All!

Few days ago I developed QMenu showing on hotkey for one of my apps,
and I noticed one problem - each time I constructed QMenu my
application took more and more RAM without freeing it. I used close()
method to hide QMenu, something similar should work in Swing when
you're just disposing window with components tree and they're
available for garbage collection. Now I am using single QMenu instance
just hiding/showing it, but I'd like to know for the future - what is
the best way to make QWidget collectable?
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