I have a QPlainTextEdit and have some words highlighted in it. Now, when I hover over it with the mouse, I want it to show me a tooltip that has a description or something like that about this high...

I have styled my tooltips like this (not really that colors) QToolTip { border: 1px solid blue; border-radius: 10px; background-color: red; } But the background is not clipped at the corners:...