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These classes are useful classes not fitting into any other category.
| QAccel | Handles keyboard accelerator and shortcut keys | 
| QAccessible | Enums and static functions relating to accessibility | 
| QAccessibleInterface | Defines an interface that exposes information about accessible objects | 
| QAccessibleObject | Implements parts of the QAccessibleInterface for QObjects | 
| QCustomMenuItem | Abstract base class for custom menu items in popup menus | 
| QDoubleValidator | Range checking of floating-point numbers | 
| QErrorMessage | Error message display dialog | 
| QFileIconProvider | Icons for QFileDialog to use | 
| QFilePreview | File previewing in QFileDialog | 
| QFocusData | Maintains the list of widgets in the focus chain | 
| QIntValidator | Validator which ensures that a string contains a valid integer within a specified range | 
| QKeySequence | Encapsulates a key sequence as used by accelerators | 
| QMacMime | Maps open-standard MIME to Mac flavors | 
| QMenuData | Base class for QMenuBar and QPopupMenu | 
| QMimeSource | Abstraction of objects which provide formatted data of a certain MIME type | 
| QProcess | Used to start external programs and to communicate with them | 
| QRangeControl | Integer value within a range | 
| QRegExp | Pattern matching using regular expressions | 
| QRegExpValidator | Used to check a string against a regular expression | 
| QSettings | Persistent platform-independent application settings | 
| QSignal | Can be used to send signals for classes that don't inherit QObject | 
| QSplashScreen | Splash screen that can be shown during application startup | 
| Qt | Namespace for miscellaneous identifiers that need to be global-like | 
| QUrl | URL parser and simplifies working with URLs | 
| QUrlInfo | Stores information about URLs | 
| QUrlOperator | Common operations on URLs | 
| QValidator | Validation of input text | 
| QVariant | Acts like a union for the most common Qt data types | 
| QWindowsMime | Maps open-standard MIME to Window Clipboard formats | 
| Copyright © 2007 Trolltech | Trademarks | Qt 3.3.8 |