- Qt 6.9
- Qt Core
- C++ Classes
- QTransposeProxyModel
- Qt 6.9.2 Reference Documentation

# QTransposeProxyModel Class

This proxy transposes the source model. More...

Header: | `#include <QTransposeProxyModel>`
CMake: | `find_package(Qt6 REQUIRED COMPONENTS Core)` `target_link_libraries(mytarget PRIVATE Qt6::Core)`
qmake: | `QT += core`
Inherits: | QAbstractProxyModel

- List of all members, including inherited members

## Public Functions

| QTransposeProxyModel(QObject *parent = nullptr)
virtual | ~QTransposeProxyModel()

## Reimplemented Public Functions

virtual int | columnCount(const QModelIndex &parent = QModelIndex()) const override
virtual QVariant | headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const override
virtual QModelIndex | index(int row, int column, const QModelIndex &parent = QModelIndex()) const override
virtual bool | insertColumns(int column, int count, const QModelIndex &parent = QModelIndex()) override
virtual bool | insertRows(int row, int count, const QModelIndex &parent = QModelIndex()) override
virtual QMap<int, QVariant> | itemData(const QModelIndex &index) const override
virtual QModelIndex | mapFromSource(const QModelIndex &sourceIndex) const override
virtual QModelIndex | mapToSource(const QModelIndex &proxyIndex) const override
virtual bool | moveColumns(const QModelIndex &sourceParent, int sourceRow, int count, const QModelIndex &destinationParent, int destinationChild) override
virtual bool | moveRows(const QModelIndex &sourceParent, int sourceRow, int count, const QModelIndex &destinationParent, int destinationChild) override
virtual QModelIndex | parent(const QModelIndex &index) const override
virtual bool | removeColumns(int column, int count, const QModelIndex &parent = QModelIndex()) override
virtual bool | removeRows(int row, int count, const QModelIndex &parent = QModelIndex()) override
virtual int | rowCount(const QModelIndex &parent = QModelIndex()) const override
virtual bool | setHeaderData(int section, Qt::Orientation orientation, const QVariant &value, int role = Qt::EditRole) override
virtual bool | setItemData(const QModelIndex &index, const QMap<int, QVariant> &roles) override
virtual void | setSourceModel(QAbstractItemModel *newSourceModel) override
virtual void | sort(int column, Qt::SortOrder order = Qt::AscendingOrder) override
virtual QSize | span(const QModelIndex &index) const override

## Detailed Description

This model will make the rows of the source model become columns of the proxy model and vice-versa.

If the model is a tree, the parents will be transposed as well. For example, if an index in the source model had parent `index(2,0)`, it will have parent `index(0,2)` in the proxy.

## Member Function Documentation

### `[explicit]` QTransposeProxyModel::QTransposeProxyModel(QObject *parent = nullptr)

Constructs a new proxy model with the given parent.

### `[virtual noexcept]` QTransposeProxyModel::~QTransposeProxyModel()

Destructs the proxy model.

### `[override virtual]` int QTransposeProxyModel::columnCount(const QModelIndex &parent = QModelIndex()) const

### `[override virtual]` QVariant QTransposeProxyModel::headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const

Reimplements: QAbstractProxyModel::headerData(int section, Qt::Orientation orientation, int role) const.

See also setHeaderData().

### `[override virtual]` QModelIndex QTransposeProxyModel::index(int row, int column, const QModelIndex &parent = QModelIndex()) const

### `[override virtual]` bool QTransposeProxyModel::insertColumns(int column, int count, const QModelIndex &parent = QModelIndex())

Reimplements: QAbstractItemModel::insertColumns(int column, int count, const QModelIndex &parent).

### `[override virtual]` bool QTransposeProxyModel::insertRows(int row, int count, const QModelIndex &parent = QModelIndex())

Reimplements: QAbstractItemModel::insertRows(int row, int count, const QModelIndex &parent).

### `[override virtual]` QMap<int, QVariant> QTransposeProxyModel::itemData(const QModelIndex &index) const

Reimplements: QAbstractProxyModel::itemData(const QModelIndex &proxyIndex) const.

See also setItemData().

### `[override virtual]` QModelIndex QTransposeProxyModel::mapFromSource(const QModelIndex &sourceIndex) const

### `[override virtual]` QModelIndex QTransposeProxyModel::mapToSource(const QModelIndex &proxyIndex) const

### `[override virtual]` bool QTransposeProxyModel::moveColumns(const QModelIndex &sourceParent, int sourceRow, int count, const QModelIndex &destinationParent, int destinationChild)

Reimplements: QAbstractItemModel::moveColumns(const QModelIndex &sourceParent, int sourceColumn, int count, const QModelIndex &destinationParent, int destinationChild).

### `[override virtual]` bool QTransposeProxyModel::moveRows(const QModelIndex &sourceParent, int sourceRow, int count, const QModelIndex &destinationParent, int destinationChild)

Reimplements: QAbstractItemModel::moveRows(const QModelIndex &sourceParent, int sourceRow, int count, const QModelIndex &destinationParent, int destinationChild).

### `[override virtual]` QModelIndex QTransposeProxyModel::parent(const QModelIndex &index) const

### `[override virtual]` bool QTransposeProxyModel::removeColumns(int column, int count, const QModelIndex &parent = QModelIndex())

Reimplements: QAbstractItemModel::removeColumns(int column, int count, const QModelIndex &parent).

### `[override virtual]` bool QTransposeProxyModel::removeRows(int row, int count, const QModelIndex &parent = QModelIndex())

Reimplements: QAbstractItemModel::removeRows(int row, int count, const QModelIndex &parent).

### `[override virtual]` int QTransposeProxyModel::rowCount(const QModelIndex &parent = QModelIndex()) const

### `[override virtual]` bool QTransposeProxyModel::setHeaderData(int section, Qt::Orientation orientation, const QVariant &value, int role = Qt::EditRole)

Reimplements: QAbstractProxyModel::setHeaderData(int section, Qt::Orientation orientation, const QVariant &value, int role).

See also headerData().

### `[override virtual]` bool QTransposeProxyModel::setItemData(const QModelIndex &index, const QMap<int, QVariant> &roles)

Reimplements: QAbstractProxyModel::setItemData(const QModelIndex &index, const QMap<int, QVariant> &roles).

See also itemData().

### `[override virtual]` void QTransposeProxyModel::setSourceModel(QAbstractItemModel *newSourceModel)

Reimplements: QAbstractProxyModel::setSourceModel(QAbstractItemModel *sourceModel).

### `[override virtual]` void QTransposeProxyModel::sort(int column, Qt::SortOrder order = Qt::AscendingOrder)

Reimplements: QAbstractProxyModel::sort(int column, Qt::SortOrder order).

This method will perform no action. Use a QSortFilterProxyModel on top of this one if you require sorting.

### `[override virtual]` QSize QTransposeProxyModel::span(const QModelIndex &index) const

Reimplements: QAbstractProxyModel::span(const QModelIndex &index) const.