<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <!-- qabstractitemmodel.cpp --> <title>QAbstractTableModel Class | Qt Core 5.12.6</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.12</td><td ><a href="qtcore-index.html">Qt Core</a></td><td ><a href="qtcore-module.html">C++ Classes</a></td><td >QAbstractTableModel</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right"><a href="qtcore-index.html">Qt 5.12.6 Reference Documentation</a></td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"> <div class="toc"> <h3><a name="toc">Contents</a></h3> <ul> <li class="level1"><a href="#public-functions">Public Functions</a></li> <li class="level1"><a href="#reimplemented-public-functions">Reimplemented Public Functions</a></li> <li class="level1"><a href="#static-public-members">Static Public Members</a></li> <li class="level1"><a href="#details">Detailed Description</a></li> <li class="level2"><a href="#subclassing">Subclassing</a></li> </ul> </div> <div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">QAbstractTableModel Class</h1> <!-- $$$QAbstractTableModel-brief --> <p>The <a href="qabstracttablemodel.html">QAbstractTableModel</a> class provides an abstract model that can be subclassed to create table models. <a href="#details">More...</a></p> <!-- @@@QAbstractTableModel --> <div class="table"><table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> Header:</td><td class="memItemRight bottomAlign"> <span class="preprocessor">#include <QAbstractTableModel></span> </td></tr><tr><td class="memItemLeft rightAlign topAlign"> qmake:</td><td class="memItemRight bottomAlign"> QT += core</td></tr><tr><td class="memItemLeft rightAlign topAlign"> Inherits:</td><td class="memItemRight bottomAlign"> <a href="qabstractitemmodel.html">QAbstractItemModel</a></td></tr></table></div><ul> <li><a href="qabstracttablemodel-members.html">List of all members, including inherited members</a></li> <li><a href="qabstracttablemodel-obsolete.html">Obsolete members</a></li> </ul> <a name="public-functions"></a> <h2 id="public-functions">Public Functions</h2> <div class="table"><table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qabstracttablemodel.html#QAbstractTableModel">QAbstractTableModel</a></b>(QObject *<i>parent</i> = nullptr)</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> virtual </td><td class="memItemRight bottomAlign"><b><a href="qabstracttablemodel.html#dtor.QAbstractTableModel">~QAbstractTableModel</a></b>()</td></tr> </table></div> <a name="reimplemented-public-functions"></a> <h2 id="reimplemented-public-functions">Reimplemented Public Functions</h2> <div class="table"><table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> virtual bool </td><td class="memItemRight bottomAlign"><b><a href="qabstracttablemodel.html#dropMimeData">dropMimeData</a></b>(const QMimeData *<i>data</i>, Qt::DropAction <i>action</i>, int <i>row</i>, int <i>column</i>, const QModelIndex &<i>parent</i>) override</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> virtual Qt::ItemFlags </td><td class="memItemRight bottomAlign"><b><a href="qabstracttablemodel.html#flags">flags</a></b>(const QModelIndex &<i>index</i>) const override</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> virtual QModelIndex </td><td class="memItemRight bottomAlign"><b><a href="qabstracttablemodel.html#index">index</a></b>(int <i>row</i>, int <i>column</i>, const QModelIndex &<i>parent</i> = ...) const override</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> virtual QModelIndex </td><td class="memItemRight bottomAlign"><b><a href="qabstracttablemodel.html#sibling">sibling</a></b>(int <i>row</i>, int <i>column</i>, const QModelIndex &<i>idx</i>) const override</td></tr> </table></div> <ul> <li class="fn">40 public functions inherited from <a href="qabstractitemmodel.html#public-functions">QAbstractItemModel</a></li> <li class="fn">32 public functions inherited from <a href="qobject.html#public-functions">QObject</a></li> </ul> <a name="static-public-members"></a> <h2 id="static-public-members">Static Public Members</h2> <div class="table"><table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> const QMetaObject </td><td class="memItemRight bottomAlign"><b><a href="qabstracttablemodel.html#staticMetaObject-var">staticMetaObject</a></b></td></tr> </table></div> <ul> <li class="fn">10 static public members inherited from <a href="qobject.html#static-public-members">QObject</a></li> </ul> <h3>Additional Inherited Members</h3> <ul> <li class="fn">1 property inherited from <a href="qobject.html#properties">QObject</a></li> <li class="fn">2 public slots inherited from <a href="qabstractitemmodel.html#public-slots">QAbstractItemModel</a></li> <li class="fn">1 public slot inherited from <a href="qobject.html#public-slots">QObject</a></li> <li class="fn">18 signals inherited from <a href="qabstractitemmodel.html#signals">QAbstractItemModel</a></li> <li class="fn">2 signals inherited from <a href="qobject.html#signals">QObject</a></li> <li class="fn">19 protected functions inherited from <a href="qabstractitemmodel.html#protected-functions">QAbstractItemModel</a></li> <li class="fn">9 protected functions inherited from <a href="qobject.html#protected-functions">QObject</a></li> <li class="fn">1 protected slot inherited from <a href="qabstractitemmodel.html#protected-slots">QAbstractItemModel</a></li> </ul> <a name="details"></a> <!-- $$$QAbstractTableModel-description --> <div class="descr"> <h2 id="details">Detailed Description</h2> <p>The <a href="qabstracttablemodel.html">QAbstractTableModel</a> class provides an abstract model that can be subclassed to create table models.</p> <p><a href="qabstracttablemodel.html">QAbstractTableModel</a> provides a standard interface for models that represent their data as a two-dimensional array of items. It is not used directly, but must be subclassed.</p> <p>Since the model provides a more specialized interface than <a href="qabstractitemmodel.html">QAbstractItemModel</a>, it is not suitable for use with tree views, although it can be used to provide data to a <a href="../qtwidgets/qlistview.html">QListView</a>. If you need to represent a simple list of items, and only need a model to contain a single column of data, subclassing the <a href="qabstractlistmodel.html">QAbstractListModel</a> may be more appropriate.</p> <p>The <a href="qabstractitemmodel.html#rowCount">rowCount</a>() and <a href="qabstractitemmodel.html#columnCount">columnCount</a>() functions return the dimensions of the table. To retrieve a model index corresponding to an item in the model, use <a href="qabstracttablemodel.html#index">index</a>() and provide only the row and column numbers.</p> <a name="subclassing"></a> <h3 id="subclassing">Subclassing</h3> <p>When subclassing <a href="qabstracttablemodel.html">QAbstractTableModel</a>, you must implement <a href="qabstractitemmodel.html#rowCount">rowCount</a>(), <a href="qabstractitemmodel.html#columnCount">columnCount</a>(), and <a href="qabstractitemmodel.html#data">data</a>(). Default implementations of the <a href="qabstracttablemodel.html#index">index</a>() and <a href="qabstractitemmodel.html#parent">parent</a>() functions are provided by <a href="qabstracttablemodel.html">QAbstractTableModel</a>. Well behaved models will also implement <a href="qabstractitemmodel.html#headerData">headerData</a>().</p> <p>Editable models need to implement <a href="qabstractitemmodel.html#setData">setData</a>(), and implement <a href="qabstracttablemodel.html#flags">flags</a>() to return a value containing <a href="qt.html#ItemFlag-enum">Qt::ItemIsEditable</a>.</p> <p>Models that provide interfaces to resizable data structures can provide implementations of <a href="qabstractitemmodel.html#insertRows">insertRows</a>(), <a href="qabstractitemmodel.html#removeRows">removeRows</a>(), <a href="qabstractitemmodel.html#insertColumns">insertColumns</a>(), and <a href="qabstractitemmodel.html#removeColumns">removeColumns</a>(). When implementing these functions, it is important to call the appropriate functions so that all connected views are aware of any changes:</p> <ul> <li>An <a href="qabstractitemmodel.html#insertRows">insertRows</a>() implementation must call <a href="qabstractitemmodel.html#beginInsertRows">beginInsertRows</a>() <i>before</i> inserting new rows into the data structure, and it must call <a href="qabstractitemmodel.html#endInsertRows">endInsertRows</a>() <i>immediately afterwards</i>.</li> <li>An <a href="qabstractitemmodel.html#insertColumns">insertColumns</a>() implementation must call <a href="qabstractitemmodel.html#beginInsertColumns">beginInsertColumns</a>() <i>before</i> inserting new columns into the data structure, and it must call <a href="qabstractitemmodel.html#endInsertColumns">endInsertColumns</a>() <i>immediately afterwards</i>.</li> <li>A <a href="qabstractitemmodel.html#removeRows">removeRows</a>() implementation must call <a href="qabstractitemmodel.html#beginRemoveRows">beginRemoveRows</a>() <i>before</i> the rows are removed from the data structure, and it must call <a href="qabstractitemmodel.html#endRemoveRows">endRemoveRows</a>() <i>immediately afterwards</i>.</li> <li>A <a href="qabstractitemmodel.html#removeColumns">removeColumns</a>() implementation must call <a href="qabstractitemmodel.html#beginRemoveColumns">beginRemoveColumns</a>() <i>before</i> the columns are removed from the data structure, and it must call <a href="qabstractitemmodel.html#endRemoveColumns">endRemoveColumns</a>() <i>immediately afterwards</i>.</li> </ul> <p><b>Note: </b>Some general guidelines for subclassing models are available in the <a href="../qtwidgets/model-view-programming.html#model-subclassing-reference">Model Subclassing Reference</a>.</p></div> <p><b>See also </b><a href="../qtwidgets/model-view-programming.html#model-classes">Model Classes</a>, <a href="qabstractitemmodel.html">QAbstractItemModel</a>, <a href="qabstractlistmodel.html">QAbstractListModel</a>, and <a href="../qtwidgets/qtwidgets-itemviews-pixelator-example.html">Pixelator Example</a>.</p> <!-- @@@QAbstractTableModel --> <div class="func"> <h2>Member Function Documentation</h2> <!-- $$$QAbstractTableModel[overload1]$$$QAbstractTableModelQObject* --> <h3 class="fn" id="QAbstractTableModel"><a name="QAbstractTableModel"></a>QAbstractTableModel::<span class="name">QAbstractTableModel</span>(<span class="type"><a href="qobject.html#QObject">QObject</a></span> *<i>parent</i> = nullptr)</h3> <p>Constructs an abstract table model for the given <i>parent</i>.</p> <!-- @@@QAbstractTableModel --> <!-- $$$~QAbstractTableModel[overload1]$$$~QAbstractTableModel --> <h3 class="fn" id="dtor.QAbstractTableModel"><a name="dtor.QAbstractTableModel"></a><code>[virtual] </code>QAbstractTableModel::<span class="name">~QAbstractTableModel</span>()</h3> <p>Destroys the abstract table model.</p> <!-- @@@~QAbstractTableModel --> <!-- $$$dropMimeData[overload1]$$$dropMimeDataconstQMimeData*Qt::DropActionintintconstQModelIndex& --> <h3 class="fn" id="dropMimeData"><a name="dropMimeData"></a><code>[override virtual] </code><span class="type">bool</span> QAbstractTableModel::<span class="name">dropMimeData</span>(const <span class="type"><a href="qmimedata.html">QMimeData</a></span> *<i>data</i>, <span class="type"><a href="qt.html#DropAction-enum">Qt::DropAction</a></span> <i>action</i>, <span class="type">int</span> <i>row</i>, <span class="type">int</span> <i>column</i>, const <span class="type"><a href="qmodelindex.html">QModelIndex</a></span> &<i>parent</i>)</h3> <p>Reimplemented from <a href="qabstractitemmodel.html#dropMimeData">QAbstractItemModel::dropMimeData</a>().</p> <!-- @@@dropMimeData --> <!-- $$$flags[overload1]$$$flagsconstQModelIndex& --> <h3 class="fn" id="flags"><a name="flags"></a><code>[override virtual] </code><span class="type"><a href="qt.html#ItemFlag-enum">Qt::ItemFlags</a></span> QAbstractTableModel::<span class="name">flags</span>(const <span class="type"><a href="qmodelindex.html">QModelIndex</a></span> &<i>index</i>) const</h3> <p>Reimplemented from <a href="qabstractitemmodel.html#flags">QAbstractItemModel::flags</a>().</p> <!-- @@@flags --> <!-- $$$index[overload1]$$$indexintintconstQModelIndex& --> <h3 class="fn" id="index"><a name="index"></a><code>[override virtual] </code><span class="type"><a href="qmodelindex.html">QModelIndex</a></span> QAbstractTableModel::<span class="name">index</span>(<span class="type">int</span> <i>row</i>, <span class="type">int</span> <i>column</i>, const <span class="type"><a href="qmodelindex.html">QModelIndex</a></span> &<i>parent</i> = ...) const</h3> <p>Reimplemented from <a href="qabstractitemmodel.html#index">QAbstractItemModel::index</a>().</p> <p>Returns the index of the data in <i>row</i> and <i>column</i> with <i>parent</i>.</p> <p><b>See also </b><a href="qabstractitemmodel.html#parent">parent</a>().</p> <!-- @@@index --> <!-- $$$sibling[overload1]$$$siblingintintconstQModelIndex& --> <h3 class="fn" id="sibling"><a name="sibling"></a><code>[override virtual] </code><span class="type"><a href="qmodelindex.html">QModelIndex</a></span> QAbstractTableModel::<span class="name">sibling</span>(<span class="type">int</span> <i>row</i>, <span class="type">int</span> <i>column</i>, const <span class="type"><a href="qmodelindex.html">QModelIndex</a></span> &<i>idx</i>) const</h3> <p>Reimplemented from <a href="qabstractitemmodel.html#sibling">QAbstractItemModel::sibling</a>().</p> <!-- @@@sibling --> </div> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2019 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.<br/> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br/> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. </p> </div> </body> </html>