QBalloon
The QBalloon component provides you with an easy way to provide more information about your application and its controls. Configure the delays, sizing, movement and closing behaviour, when to show the balloon (when a control gets the focus or when the mouse cursor hovers above the control) and control the balloon window itself.

The QBalloon shows a QBalloonWindow which is a shape based form with a QMarkupLabel to provide formatting and interaction with the QBalloonWindow. Set the shape of the QBalloon or design your custom QBalloonWindow (see the screenshot on the right).