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<title>Qt 4.6: QAbstractTableModel Class Reference</title>
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<td width="1"> </td><td class="postheader" valign="center"><a href="index.html"><font color="#004faf">Home</font></a> · <a href="classes.html"><font color="#004faf">All Classes</font></a> · <a href="functions.html"><font color="#004faf">All Functions</font></a> · <a href="overviews.html"><font color="#004faf">Overviews</font></a></td></tr></table><h1 class="title">QAbstractTableModel Class Reference<br /><span class="small-subtitle">[<a href="qtcore.html">QtCore</a> module]</span>
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<p>The QAbstractTableModel class provides an abstract model that can be subclassed to create table models. <a href="#details">More...</a></p>
<pre> #include <QAbstractTableModel></pre><p>Inherits <a href="qabstractitemmodel.html">QAbstractItemModel</a>.</p>
<p>Inherited by <a href="qsqlquerymodel.html">QSqlQueryModel</a>.</p>
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<li><a href="qabstracttablemodel-members.html">List of all members, including inherited members</a></li>
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<a name="public-functions"></a>
<h2>Public Functions</h2>
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<tr><td class="memItemLeft" align="right" valign="top"></td><td class="memItemRight" valign="bottom"><b><a href="qabstracttablemodel.html#QAbstractTableModel">QAbstractTableModel</a></b> ( QObject * <i>parent</i> = 0 )</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"></td><td class="memItemRight" valign="bottom"><b><a href="qabstracttablemodel.html#dtor.QAbstractTableModel">~QAbstractTableModel</a></b> ()</td></tr>
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<a name="reimplemented-public-functions"></a>
<h2>Reimplemented Public Functions</h2>
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<tr><td class="memItemLeft" align="right" valign="top">virtual bool </td><td class="memItemRight" valign="bottom"><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> )</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual QModelIndex </td><td class="memItemRight" valign="bottom"><b><a href="qabstracttablemodel.html#index">index</a></b> ( int <i>row</i>, int <i>column</i>, const QModelIndex & <i>parent</i> = QModelIndex() ) const</td></tr>
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<li><div bar="2" class="fn"></div>35 public functions inherited from <a href="qabstractitemmodel.html#public-functions">QAbstractItemModel</a></li>
<li><div bar="2" class="fn"></div>29 public functions inherited from <a href="qobject.html#public-functions">QObject</a></li>
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<h3>Additional Inherited Members</h3>
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<li><div class="fn"></div>1 property inherited from <a href="qobject.html#properties">QObject</a></li>
<li><div class="fn"></div>2 public slots inherited from <a href="qabstractitemmodel.html#public-slots">QAbstractItemModel</a></li>
<li><div class="fn"></div>1 public slot inherited from <a href="qobject.html#public-slots">QObject</a></li>
<li><div class="fn"></div>18 signals inherited from <a href="qabstractitemmodel.html#signals">QAbstractItemModel</a></li>
<li><div class="fn"></div>1 signal inherited from <a href="qobject.html#signals">QObject</a></li>
<li><div class="fn"></div>5 static public members inherited from <a href="qobject.html#static-public-members">QObject</a></li>
<li><div class="fn"></div>21 protected functions inherited from <a href="qabstractitemmodel.html#protected-functions">QAbstractItemModel</a></li>
<li><div class="fn"></div>7 protected functions inherited from <a href="qobject.html#protected-functions">QObject</a></li>
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<a name="details"></a>
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<h2>Detailed Description</h2>
<p>The QAbstractTableModel class provides an abstract model that can be subclassed to create table models.</p>
<p>QAbstractTableModel 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="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>Subclassing</h3>
<p>When subclassing QAbstractTableModel, 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 QAbstractTableModel. 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="qabstractitemmodel.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>
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<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>
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<p><b>Note:</b> Some general guidelines for subclassing models are available in the <a href="model-view-model-subclassing.html">Model Subclassing Reference</a>.</p>
<p><b>Note:</b></p>
<p>See also <a href="model-view-model.html">Model Classes</a>, <a href="qabstractitemmodel.html">QAbstractItemModel</a>, <a href="qabstractlistmodel.html">QAbstractListModel</a>, and <a href="itemviews-pixelator.html">Pixelator Example</a>.</p>
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<h2>Member Function Documentation</h2>
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<h3 class="fn"><a name="QAbstractTableModel"></a>QAbstractTableModel::QAbstractTableModel ( <a href="qobject.html">QObject</a> * <i>parent</i> = 0 )</h3>
<p>Constructs an abstract table model for the given <i>parent</i>.</p>
<a name="//apple_ref/cpp/instm/QAbstractTableModel/~QAbstractTableModel"></a>
<h3 class="fn"><a name="dtor.QAbstractTableModel"></a>QAbstractTableModel::~QAbstractTableModel ()</h3>
<p>Destroys the abstract table model.</p>
<a name="//apple_ref/cpp/instm/QAbstractTableModel/dropMimeData"></a>
<h3 class="fn"><a name="dropMimeData"></a>bool QAbstractTableModel::dropMimeData ( const <a href="qmimedata.html">QMimeData</a> * <i>data</i>, <a href="qt.html#DropAction-enum">Qt::DropAction</a> <i>action</i>, int <i>row</i>, int <i>column</i>, const <a href="qmodelindex.html">QModelIndex</a> & <i>parent</i> ) <tt> [virtual]</tt></h3>
<p>Reimplemented from <a href="qabstractitemmodel.html#dropMimeData">QAbstractItemModel::dropMimeData</a>().</p>
<a name="//apple_ref/cpp/instm/QAbstractTableModel/index"></a>
<h3 class="fn"><a name="index"></a><a href="qmodelindex.html">QModelIndex</a> QAbstractTableModel::index ( int <i>row</i>, int <i>column</i>, const <a href="qmodelindex.html">QModelIndex</a> & <i>parent</i> = QModelIndex() ) const <tt> [virtual]</tt></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>See also <a href="qabstractitemmodel.html#parent">parent</a>().</p>
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