Applets wishing to use this tooltip should Create a Plasma::ToolTipData struct
(defined in widget.h) and pass it to Widget::setToolTip(). Showing and hiding
the tooltip is all handled automatically.
While the basic idea is found in this patch, the look still definatly needs some
work. Still a definate work in progress.
svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=751113
