title: QT: how to Implement the hover card outside the window
body: <p><a href="https://i.stack.imgur.com/mehUK.gif" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/mehUK.gif" alt="enter image description here" /></a></p>
  <p>How to simulate a similar effect, I tried qmenu, but it is modal, synchronous, not compatible with leaveEvent, it is very troublesome to operate, does QT have a native method? Thank you</p>