Help System

These classes provide for all forms of online-help in your application, with three levels of detail:

Tool Tips and Status Bar message - flyweight help, extremely brief, entirely integrated in the user interface, requiring little or no user interaction to invoke.
What's This? - lightweight, but can be a three-paragraph explanation.
Online Help - can encompass any amount of information, but is typically slower to call up, somewhat separated from the user's work, and often users feel that using online help is a digression from their real task.

QAssistantClient	Means of using Qt Assistant as an application's help tool
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	Tooltips (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

Qt 4.2.3