How to set QToolTip's appearance of QToolButton

[luochen601]

I have some QToolButton in my window.
I set toolTip for QToolButton too.
But I need to change the toolTip's background and foreground.
How to use stylesheet to achieve? Or other methods?
Thanks.

[tbscope]

http://doc.qt.nokia.com/4.6/stylesheet-examples.html#customizing-qtooltip