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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.

QClipboardAccess to the window system clipboard
QDesktopWidgetAccess to screen information on multi-head systems
QEventThe base class of all event classes. Event objects contain event parameters
QFontDatabaseInformation about the fonts available in the underlying window system
QMutexAccess serialization between threads
QMutexLockerConvenience class that simplifies locking and unlocking mutexes
QPixmapCacheApplication-wide cache for pixmaps
QReadLockerConvenience class that simplifies locking and unlocking read-write locks for read access
QReadWriteLockRead-write locking
QSemaphoreGeneral counting semaphore
QSessionManagerAccess to the session manager
QThreadPlatform-independent threads
QThreadStoragePer-thread data storage
QTranslatorInternationalization support for text output
QWaitConditionCondition variable for synchronizing threads
QWriteLockerConvenience class that simplifies locking and unlocking read-write locks for write access


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Qt 4.5.1