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QModelIndex Class Reference

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

#include <QModelIndex>

List of all members.

Public Types

Public Functions


Detailed Description

The QModelIndex class is used to locate data in a data model.

This class is used as an index into item models derived from QAbstractItemModel. The index is used by item views, delegates, and selection models to locate an item in the model. QModelIndex objects are created by the model.

An invalid model index can be constructed with the zero argument form of the QModelIndex() constructor. This is useful when referring to top-level items in a model.

A model index has a row(), a column(), and a type().

See also Model/View Programming, QPersistentModelIndex, and QAbstractItemModel.


Member Type Documentation

enum QModelIndex::Type

A model index locates an item in a view or in a view's horizontal or vertical header.

QModelIndex::View 
QModelIndex::HorizontalHeader 
QModelIndex::VerticalHeader 

Member Function Documentation

QModelIndex::QModelIndex ()

Creates a new invalid model index.

QModelIndex::QModelIndex ( const QModelIndex & other )

Creates a new model index that is a copy of the other model index.

QModelIndex::~QModelIndex ()

Destroys the model index.

int QModelIndex::column () const

Returns the column this model index refers to.

bool QModelIndex::isValid () const

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

int QModelIndex::row () const

Returns the row this model index refers to.

Type QModelIndex::type () const

Returns the Type of this model index.

bool QModelIndex::operator!= ( const QModelIndex & other ) const

Returns true if this model index does not refer to the same location as the other model index; otherwise returns false.

bool QModelIndex::operator== ( const QModelIndex & other ) const

Returns true if this model index refers to the same location as the other model index; otherwise returns false.


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Qt 4.0.0-tp1