Tooltips, Status Tips, and "What's This?" Help
Using QTextBrowser as a Simple Help Engine
Using Qt Assistant for Powerful Online Help
Most applications provide their users with online help. Some help is short, such as tooltips, status tips, and "What's This?" help. Qt supports all of these. Other help can be much more extensive, involving many pages of text. For this kind of help, you can use QTextBrowser as a simple online help browser, or you can invoke Qt Assistant or another HTML browser from your application.