The QSqlRelationalDelegate class provides a delegate that is used to display and edit data from a QSqlRelationalTableModel. More...
| Header: | #include <QSqlRelationalDelegate> |
| qmake: | QT += sql |
| Inherits: | QItemDelegate |
| QSqlRelationalDelegate(QObject *parent = nullptr) | |
| virtual | ~QSqlRelationalDelegate() |
| virtual QWidget * | createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const override |
| virtual void | setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const override |
The QSqlRelationalDelegate class provides a delegate that is used to display and edit data from a QSqlRelationalTableModel.
Unlike the default delegate, QSqlRelationalDelegate provides a combobox for fields that are foreign keys into other tables. To use the class, simply call QAbstractItemView::setItemDelegate() on the view with an instance of QSqlRelationalDelegate:
QTableView *view = new QTableView; view->setModel(model); view->setItemDelegate(new QSqlRelationalDelegate(view));
The Relational Table Model example (shown below) illustrates how to use QSqlRelationalDelegate in conjunction with QSqlRelationalTableModel to provide tables with foreign key support.
See also QSqlRelationalTableModel and Model/View Programming.
Constructs a QSqlRelationalDelegate object with the given parent.
[virtual] QSqlRelationalDelegate::~QSqlRelationalDelegate()Destroys the QSqlRelationalDelegate object and frees any allocated resources.
[override virtual] QWidget *QSqlRelationalDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &option, const
QModelIndex &index) constReimplemented from QItemDelegate::createEditor().
[override virtual] void QSqlRelationalDelegate::setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) constReimplemented from QItemDelegate::setModelData().
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