QObject * add ( QObject * object )
void remove ( QObject * object )
bool isEmpty () const
void clear ()
DESCRIPTIONThe QObjectCleanupHandler class watches the lifetime of multiple QObjects.
A QObjectCleanupHandler is useful whenever you need to know when a number of QObjects that are owned by someone else have been deleted. This is important, for example, when referencing memory in an application that has been allocated in a shared library.
class FactoryComponent : public FactoryInterface, public QLibraryInterface
bool canUnload() const;
// allocate a new object, and add it to the cleanup handler
return objects.add( new QObject() );
// QLibraryInterface implementation
// it is only safe to unload the library when all QObject's have been destroyed
bool FactoryComponent::canUnload() const
See also Object Model.
MEMBER FUNCTION DOCUMENTATION
QObjectCleanupHandler::QObjectCleanupHandler ()Constructs an empty QObjectCleanupHandler.
QObjectCleanupHandler::~QObjectCleanupHandler ()Destroys the cleanup handler. All objects in this cleanup handler will be deleted.
QObject * QObjectCleanupHandler::add ( QObject * object )Adds object to this cleanup handler and returns the pointer to the object.
void QObjectCleanupHandler::clear ()Deletes all objects in this cleanup handler. The cleanup handler becomes empty.
bool QObjectCleanupHandler::isEmpty () constReturns TRUE if this cleanup handler is empty or if all objects in this cleanup handler have been destroyed; otherwise return FALSE.
void QObjectCleanupHandler::remove ( QObject * object )Removes the object from this cleanup handler. The object will not be destroyed.
COPYRIGHTCopyright 1992-2007 Trolltech ASA, http://www.trolltech.com. See the license file included in the distribution for a complete license statement.
AUTHORGenerated automatically from the source code.
BUGSIf you find a bug in Qt, please report it as described in http://doc.trolltech.com/bughowto.html. Good bug reports help us to help you. Thank you.
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If you find errors in this manual page, please report them to [email protected]. Please include the name of the manual page (qobjectcleanuphandler.3qt) and the Qt version (3.3.8).