These classes provide for all forms of online-help in your application, with three levels of detail:
| QHelpEvent | Event that is used to request helpful information about a particular point in a widget |
| QStatusBar | Horizontal bar suitable for presenting status information |
| QStatusTipEvent | Event that is used to show messages in a status bar |
| QToolTip | Tool tips (balloon help) for any widget |
| QWhatsThis | Simple description of any widget, i.e. answering the question "What's This?" |
| QWhatsThisClickedEvent | Event that can be used to handle hyperlinks in a "What's This?" text |