QPersistentModelIndex

The QPersistentModelIndex class is used to locate data in a data model. More…

Synopsis

Functions

• def __eq__ (other)

• def __eq__ (other)

• def __lt__ (other)

• def __ne__ (other)

• def __ne__ (other)

• def child (row, column)

• def column ()

• def data ([role=Qt.DisplayRole])

• def flags ()

• def internalId ()

• def internalPointer ()

• def isValid ()

• def model ()

• def operator= (other)

• def parent ()

• def row ()

• def sibling (row, column)

• def swap (other)

Detailed Description

A QPersistentModelIndex is a model index that can be stored by an application, and later used to access information in a model. Unlike the QModelIndex class, it is safe to store a QPersistentModelIndex since the model will ensure that references to items will continue to be valid as long as they can be accessed by the model.

It is good practice to check that persistent model indexes are valid before using them.

See also

Model/View Programming QModelIndex QAbstractItemModel

class QPersistentModelIndex

QPersistentModelIndex(index)

QPersistentModelIndex(other)

Parameters

• other – QPersistentModelIndex

• index – QModelIndex

PySide2.QtCore.QPersistentModelIndex.child(row, column)

Parameters

• row – int

• column – int

Return type

QModelIndex

Use index() instead.

Returns the child of the model index that is stored in the given row and column .

See also

parent() sibling()

PySide2.QtCore.QPersistentModelIndex.column()

Return type

int

Returns the column this persistent model index refers to.

PySide2.QtCore.QPersistentModelIndex.data([role=Qt.DisplayRole])

Parameters

role – int

Return type

object

Returns the data for the given role for the item referred to by the index.

See also

ItemDataRole setData()

PySide2.QtCore.QPersistentModelIndex.flags()

Return type

ItemFlags

Returns the flags for the item referred to by the index.

PySide2.QtCore.QPersistentModelIndex.internalId()

Return type

quintptr

Returns a quintptr used by the model to associate the index with the internal data structure.

PySide2.QtCore.QPersistentModelIndex.internalPointer()

Return type

void

Returns a void * pointer used by the model to associate the index with the internal data structure.

PySide2.QtCore.QPersistentModelIndex.isValid()

Return type

bool

Returns true if this persistent model index is valid; otherwise returns false .

A valid index belongs to a model, and has non-negative row and column numbers.

See also

model() row() column()

PySide2.QtCore.QPersistentModelIndex.model()

Return type

QAbstractItemModel

Returns the model that the index belongs to.

PySide2.QtCore.QPersistentModelIndex.__ne__(other)

Parameters

other – QModelIndex

Return type

bool

PySide2.QtCore.QPersistentModelIndex.__ne__(other)

Parameters

other – QPersistentModelIndex

Return type

bool

PySide2.QtCore.QPersistentModelIndex.__lt__(other)

Parameters

other – QPersistentModelIndex

Return type

bool

PySide2.QtCore.QPersistentModelIndex.operator=(other)

Parameters

other – QModelIndex

Return type

QPersistentModelIndex

PySide2.QtCore.QPersistentModelIndex.__eq__(other)

Parameters

other – QModelIndex

Return type

bool

PySide2.QtCore.QPersistentModelIndex.__eq__(other)

Parameters

other – QPersistentModelIndex

Return type

bool

PySide2.QtCore.QPersistentModelIndex.parent()

Return type

QModelIndex

Returns the parent QModelIndex for this persistent index, or an invalid QModelIndex if it has no parent.

See also

sibling() model()

PySide2.QtCore.QPersistentModelIndex.row()

Return type

int

Returns the row this persistent model index refers to.

PySide2.QtCore.QPersistentModelIndex.sibling(row, column)

Parameters

• row – int

• column – int

Return type

QModelIndex

Returns the sibling at row and column or an invalid QModelIndex if there is no sibling at this position.

See also

parent()

PySide2.QtCore.QPersistentModelIndex.swap(other)

Parameters

other – QPersistentModelIndex

Swaps this persistent modelindex with other . This function is very fast and never fails.