QSqlRelationalDelegate Class

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

• List of all members, including inherited members
• Obsolete members

Public Functions

	QSqlRelationalDelegate(QObject *parent = nullptr)
virtual	~QSqlRelationalDelegate()

Reimplemented Public Functions

virtual QWidget *	createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const override
virtual void	setEditorData(QWidget *editor, const QModelIndex &index) const override
virtual void	setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const override

• 10 public functions inherited from QItemDelegate
• 9 public functions inherited from QAbstractItemDelegate
• 31 public functions inherited from QObject

Additional Inherited Members

• 1 property inherited from QItemDelegate
• 1 property inherited from QObject
• 1 public slot inherited from QObject
• 3 signals inherited from QAbstractItemDelegate
• 2 signals inherited from QObject
• 9 static public members inherited from QObject
• 7 protected functions inherited from QItemDelegate
• 9 protected functions inherited from QObject

Detailed Description

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.

Member Function Documentation

QSqlRelationalDelegate::QSqlRelationalDelegate(QObject *parent = nullptr)

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) const

Reimplemented from QItemDelegate::createEditor().

[override virtual] void QSqlRelationalDelegate::setEditorData(QWidget *editor, const QModelIndex &index) const

[override virtual] void QSqlRelationalDelegate::setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const

Reimplemented from QItemDelegate::setModelData().