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# Environment Classes

These classes providing various global services to your application such as event handling, access to system settings, internationalization, etc.

Classes:

- QAccel (Handles keyboard accelerator and shortcut keys)
- QApplication (Manages the GUI application's control flow and main settings)
- QClipboard (Access to the window system clipboard)
- QCursor (Mouse cursor with an arbitrary shape)
- QEvent (Base class of all event classes. Event objects contain event parameters)
- QFontDatabase (Provides information about available fonts)
- QMemoryManager (The allocation and tracking of memory used by pixmaps and font glyphs)
- QMimeSourceFactory (An extensible supply of MIME-typed data)
- QMutex (Access serialization between threads)
- QPixmapCache (Application-global cache for pixmaps)
- QSemaphore (Robust integer semaphore)
- QSessionManager (Access to the session manager)
- QThread (Platform-independent threads)
- QTranslator (Internationalization support for text output)
- QTranslatorMessage (Translator message and its properties)
- QWaitCondition (Allows waiting/waking for conditions between threads)