This article shows the use of QToolTip class in Qt.This article is well-explained by using overview and screen shots.One more important thing is this application is self signed.
In code snippet it shows that contributor want to display string means name.and second step s for the position of the string which is used by author.You can also use different font and color by using different functions.
This article is very useful for the beginner and intermediate can also use this article for balloon help of any widget.
--nayan trivedi 19:19, 18 September 2009 (UTC)