QSqlRelationalDelegate Class

The QSqlRelationalDelegate class provides a delegate that is used to display and edit data from a QSqlRelationalTableModel. More...

Header:	#include <QSqlRelationalDelegate>
CMake:	find_package(Qt6 REQUIRED COMPONENTS Sql) target_link_libraries(mytarget PRIVATE Qt6::Sql)
qmake:	QT += sql
Inherits:	QStyledItemDelegate

List of all members, including inherited 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	setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const override

Detailed Description

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:

    std::unique_ptr<QTableView> view{new QTableView};
    view->setModel(model);
    view->setItemDelegate(new QSqlRelationalDelegate(view.get()));

The Relational Table Model example (shown below) illustrates how to use QSqlRelationalDelegate in conjunction with QSqlRelationalTableModel to provide tables with foreign key support.

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

Reimplements: QStyledItemDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const.

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

Reimplements: QStyledItemDelegate::setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const.

Contents

QSqlRelationalDelegate Class

Public Functions

Reimplemented Public Functions

Detailed Description

Member Function Documentation

QSqlRelationalDelegate::QSqlRelationalDelegate(QObject *parent = nullptr)

[virtual] QSqlRelationalDelegate::~QSqlRelationalDelegate()

[override virtual] QWidget *QSqlRelationalDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const

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

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QSqlRelationalDelegate::QSqlRelationalDelegate(QObject **parent* = nullptr)

`[virtual]` QSqlRelationalDelegate::~QSqlRelationalDelegate()

`[override virtual]` QWidget *QSqlRelationalDelegate::createEditor(QWidget **parent, const QStyleOptionViewItem &option, const QModelIndex &index*) const

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