Some QObject functions, e.g. children(), return a QObjectList. QObjectList is a typedef for QList<QObject *>. No copy constructor or assignment operator QObject has neither a copy constructor nor an assignment
QScopedPointer guarantees that the object pointed to will get deleted when the current scope disappears. Consider this function which does heap allocations, and has various exit points: voidmyFunction(booluseSubClass) { MyClass*p=useSubClass?newMyClass() :newMySubClass;QIODevice*device=handsOverOwner...
Any class or struct that has a public default constructor, a public copy constructor, and a public destructor can be registered. The following code allocates and destructs an instance of MyClass: int id = QMetaType::type("MyClass"); if (id != QMetaType::UnknownType) { void *myClass...
If the source model is deleted or no source model is specified, the proxy model operates on an empty placeholder model. See also QSortFilterProxyModel,QAbstractItemModel,Model/View Architecture Constructor & Destructor Documentation QAbstractProxyModel::QAbstractProxyModel(QObject*parent=nullptr) ...
This can be useful if you want to ensure that all user-visible strings go through QObject::tr(), for example. Note: Defining QT_RESTRICTED_CAST_FROM_ASCII also disables this constructor, but enables a QString(const char (&ch)[N]) constructor instead. Using non-literal input, or input ...
Q3DataBrowser( QWidget *parent= 0, const char *name= 0, Qt::WindowFlagsfl= 0 ) ~Q3DataBrowser() boolautoEdit() const Boundaryboundary() boolboundaryChecking() const boolconfirmCancels() const boolconfirmDelete() const boolconfirmEdits() const ...
QStandardItemModel::QStandardItemModel ( QObject * parent = nullptr ) explicit Constructs a new item model with the given parent. QStandardItemModel::QStandardItemModel ( int rows, int columns, QObject * parent = nullptr ) Constructs a new item model that initially has the given number ...
Any class or struct that has a public default constructor, a public copy constructor, and a public destructor can be registered.The following code allocates and destructs an instance of MyClass:int id = QMetaType.type("MyClass"); if (id == 0) { void *myClassPtr = QMetaType.construct...
void setItemChecked ( intid, boolcheck ) bool connectItem ( intid, constQObject*receiver, constchar*member ) bool disconnectItem ( intid, constQObject*receiver, constchar*member ) bool setItemParameter ( intid, intparam ) int itemParameter ( intid ) const ...
Creates a database connection using the driver driver, with the parent parent and the object name objname. Warning: The framework takes ownership of the driver pointer, so it should not be deleted. QSqlDatabase::~QSqlDatabase () ...