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//! [0]
QDataWidgetMapper *mapper = new QDataWidgetMapper;
mapper->setModel(model);
mapper->addMapping(mySpinBox, 0);
mapper->addMapping(myLineEdit, 1);
mapper->addMapping(myCountryChooser, 2);
mapper->toFirst();
//! [0]
//! [1]
QDataWidgetMapper *mapper = new QDataWidgetMapper();
mapper->setModel(myModel);
mapper->addMapping(nameLineEdit, 0);
mapper->addMapping(ageSpinBox, 1);
//! [1]
//! [2]
QDataWidgetMapper *mapper = new QDataWidgetMapper();
connect(myTableView->selectionModel(), SIGNAL(currentRowChanged(QModelIndex,QModelIndex)),
mapper, SLOT(setCurrentModelIndex(QModelIndex)));
//! [2]
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