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<li class="level1"><a href="#properties">Properties</a></li>
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<h1 class="title">QTreeWidget Class Reference</h1>
<!-- $$$QTreeWidget-brief -->
<p>The QTreeWidget class provides a tree view that uses a predefined tree model. <a href="#details">More...</a></p>
<!-- @@@QTreeWidget -->
<pre class="cpp"> <span class="preprocessor">#include <QTreeWidget></span></pre><p><b>Inherits: </b><a href="qtreeview.html">QTreeView</a>.</p>
<ul>
<li><a href="qtreewidget-members.html">List of all members, including inherited members</a></li>
<li><a href="qtreewidget-obsolete.html">Obsolete members</a></li>
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<a name="properties"></a>
<h2>Properties</h2>
<ul>
<li class="fn"><b><a href="qtreewidget.html#columnCount-prop">columnCount</a></b> : int</li>
<li class="fn"><b><a href="qtreewidget.html#topLevelItemCount-prop">topLevelItemCount</a></b> : const int</li>
</ul>
<ul>
<li class="fn">11 properties inherited from <a href="qtreeview.html#properties">QTreeView</a></li>
<li class="fn">16 properties inherited from <a href="qabstractitemview.html#properties">QAbstractItemView</a></li>
<li class="fn">2 properties inherited from <a href="qabstractscrollarea.html#properties">QAbstractScrollArea</a></li>
<li class="fn">6 properties inherited from <a href="qframe.html#properties">QFrame</a></li>
<li class="fn">58 properties inherited from <a href="qwidget.html#properties">QWidget</a></li>
<li class="fn">1 property inherited from <a href="qobject.html#properties">QObject</a></li>
</ul>
<a name="public-functions"></a>
<h2>Public Functions</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#QTreeWidget">QTreeWidget</a></b> ( QWidget * <i>parent</i> = 0 )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#dtor.QTreeWidget">~QTreeWidget</a></b> ()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#addTopLevelItem">addTopLevelItem</a></b> ( QTreeWidgetItem * <i>item</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#addTopLevelItems">addTopLevelItems</a></b> ( const QList<QTreeWidgetItem *> & <i>items</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#closePersistentEditor">closePersistentEditor</a></b> ( QTreeWidgetItem * <i>item</i>, int <i>column</i> = 0 )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#columnCount-prop">columnCount</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#currentColumn">currentColumn</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QTreeWidgetItem * </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#currentItem">currentItem</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#editItem">editItem</a></b> ( QTreeWidgetItem * <i>item</i>, int <i>column</i> = 0 )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QList<QTreeWidgetItem *> </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#findItems">findItems</a></b> ( const QString & <i>text</i>, Qt::MatchFlags <i>flags</i>, int <i>column</i> = 0 ) const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QTreeWidgetItem * </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#headerItem">headerItem</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#indexOfTopLevelItem">indexOfTopLevelItem</a></b> ( QTreeWidgetItem * <i>item</i> ) const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#insertTopLevelItem">insertTopLevelItem</a></b> ( int <i>index</i>, QTreeWidgetItem * <i>item</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#insertTopLevelItems">insertTopLevelItems</a></b> ( int <i>index</i>, const QList<QTreeWidgetItem *> & <i>items</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QTreeWidgetItem * </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#invisibleRootItem">invisibleRootItem</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#isFirstItemColumnSpanned">isFirstItemColumnSpanned</a></b> ( const QTreeWidgetItem * <i>item</i> ) const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QTreeWidgetItem * </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#itemAbove">itemAbove</a></b> ( const QTreeWidgetItem * <i>item</i> ) const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QTreeWidgetItem * </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#itemAt">itemAt</a></b> ( const QPoint & <i>p</i> ) const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QTreeWidgetItem * </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#itemAt-2">itemAt</a></b> ( int <i>x</i>, int <i>y</i> ) const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QTreeWidgetItem * </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#itemBelow">itemBelow</a></b> ( const QTreeWidgetItem * <i>item</i> ) const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QWidget * </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#itemWidget">itemWidget</a></b> ( QTreeWidgetItem * <i>item</i>, int <i>column</i> ) const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#openPersistentEditor">openPersistentEditor</a></b> ( QTreeWidgetItem * <i>item</i>, int <i>column</i> = 0 )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#removeItemWidget">removeItemWidget</a></b> ( QTreeWidgetItem * <i>item</i>, int <i>column</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QList<QTreeWidgetItem *> </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#selectedItems">selectedItems</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#columnCount-prop">setColumnCount</a></b> ( int <i>columns</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#setCurrentItem">setCurrentItem</a></b> ( QTreeWidgetItem * <i>item</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#setCurrentItem-2">setCurrentItem</a></b> ( QTreeWidgetItem * <i>item</i>, int <i>column</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#setCurrentItem-3">setCurrentItem</a></b> ( QTreeWidgetItem * <i>item</i>, int <i>column</i>, QItemSelectionModel::SelectionFlags <i>command</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#setFirstItemColumnSpanned">setFirstItemColumnSpanned</a></b> ( const QTreeWidgetItem * <i>item</i>, bool <i>span</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#setHeaderItem">setHeaderItem</a></b> ( QTreeWidgetItem * <i>item</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#setHeaderLabel">setHeaderLabel</a></b> ( const QString & <i>label</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#setHeaderLabels">setHeaderLabels</a></b> ( const QStringList & <i>labels</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#setItemWidget">setItemWidget</a></b> ( QTreeWidgetItem * <i>item</i>, int <i>column</i>, QWidget * <i>widget</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#sortColumn">sortColumn</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#sortItems">sortItems</a></b> ( int <i>column</i>, Qt::SortOrder <i>order</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QTreeWidgetItem * </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#takeTopLevelItem">takeTopLevelItem</a></b> ( int <i>index</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QTreeWidgetItem * </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#topLevelItem">topLevelItem</a></b> ( int <i>index</i> ) const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#topLevelItemCount-prop">topLevelItemCount</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QRect </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#visualItemRect">visualItemRect</a></b> ( const QTreeWidgetItem * <i>item</i> ) const</td></tr>
</table>
<a name="reimplemented-public-functions"></a>
<h2>Reimplemented Public Functions</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#setSelectionModel">setSelectionModel</a></b> ( QItemSelectionModel * <i>selectionModel</i> )</td></tr>
</table>
<ul>
<li class="fn">49 public functions inherited from <a href="qtreeview.html#public-functions">QTreeView</a></li>
<li class="fn">57 public functions inherited from <a href="qabstractitemview.html#public-functions">QAbstractItemView</a></li>
<li class="fn">17 public functions inherited from <a href="qabstractscrollarea.html#public-functions">QAbstractScrollArea</a></li>
<li class="fn">14 public functions inherited from <a href="qframe.html#public-functions">QFrame</a></li>
<li class="fn">221 public functions inherited from <a href="qwidget.html#public-functions">QWidget</a></li>
<li class="fn">29 public functions inherited from <a href="qobject.html#public-functions">QObject</a></li>
<li class="fn">13 public functions inherited from <a href="qpaintdevice.html#public-functions">QPaintDevice</a></li>
</ul>
<a name="public-slots"></a>
<h2>Public Slots</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#clear">clear</a></b> ()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#collapseItem">collapseItem</a></b> ( const QTreeWidgetItem * <i>item</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#expandItem">expandItem</a></b> ( const QTreeWidgetItem * <i>item</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#scrollToItem">scrollToItem</a></b> ( const QTreeWidgetItem * <i>item</i>, QAbstractItemView::ScrollHint <i>hint</i> = EnsureVisible )</td></tr>
</table>
<ul>
<li class="fn">8 public slots inherited from <a href="qtreeview.html#public-slots">QTreeView</a></li>
<li class="fn">9 public slots inherited from <a href="qabstractitemview.html#public-slots">QAbstractItemView</a></li>
<li class="fn">19 public slots inherited from <a href="qwidget.html#public-slots">QWidget</a></li>
<li class="fn">1 public slot inherited from <a href="qobject.html#public-slots">QObject</a></li>
</ul>
<a name="signals"></a>
<h2>Signals</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#currentItemChanged">currentItemChanged</a></b> ( QTreeWidgetItem * <i>current</i>, QTreeWidgetItem * <i>previous</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#itemActivated">itemActivated</a></b> ( QTreeWidgetItem * <i>item</i>, int <i>column</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#itemChanged">itemChanged</a></b> ( QTreeWidgetItem * <i>item</i>, int <i>column</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#itemClicked">itemClicked</a></b> ( QTreeWidgetItem * <i>item</i>, int <i>column</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#itemCollapsed">itemCollapsed</a></b> ( QTreeWidgetItem * <i>item</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#itemDoubleClicked">itemDoubleClicked</a></b> ( QTreeWidgetItem * <i>item</i>, int <i>column</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#itemEntered">itemEntered</a></b> ( QTreeWidgetItem * <i>item</i>, int <i>column</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#itemExpanded">itemExpanded</a></b> ( QTreeWidgetItem * <i>item</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#itemPressed">itemPressed</a></b> ( QTreeWidgetItem * <i>item</i>, int <i>column</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#itemSelectionChanged">itemSelectionChanged</a></b> ()</td></tr>
</table>
<ul>
<li class="fn">2 signals inherited from <a href="qtreeview.html#signals">QTreeView</a></li>
<li class="fn">6 signals inherited from <a href="qabstractitemview.html#signals">QAbstractItemView</a></li>
<li class="fn">1 signal inherited from <a href="qwidget.html#signals">QWidget</a></li>
<li class="fn">1 signal inherited from <a href="qobject.html#signals">QObject</a></li>
</ul>
<a name="protected-functions"></a>
<h2>Protected Functions</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> virtual bool </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#dropMimeData">dropMimeData</a></b> ( QTreeWidgetItem * <i>parent</i>, int <i>index</i>, const QMimeData * <i>data</i>, Qt::DropAction <i>action</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QModelIndex </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#indexFromItem">indexFromItem</a></b> ( QTreeWidgetItem * <i>item</i>, int <i>column</i> = 0 ) const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QTreeWidgetItem * </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#itemFromIndex">itemFromIndex</a></b> ( const QModelIndex & <i>index</i> ) const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual QMimeData * </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#mimeData">mimeData</a></b> ( const QList<QTreeWidgetItem *> <i>items</i> ) const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual QStringList </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#mimeTypes">mimeTypes</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual Qt::DropActions </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#supportedDropActions">supportedDropActions</a></b> () const</td></tr>
</table>
<a name="reimplemented-protected-functions"></a>
<h2>Reimplemented Protected Functions</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#dropEvent">dropEvent</a></b> ( QDropEvent * <i>event</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual bool </td><td class="memItemRight bottomAlign"><b><a href="qtreewidget.html#event">event</a></b> ( QEvent * <i>e</i> )</td></tr>
</table>
<ul>
<li class="fn">28 protected functions inherited from <a href="qtreeview.html#protected-functions">QTreeView</a></li>
<li class="fn">36 protected functions inherited from <a href="qabstractitemview.html#protected-functions">QAbstractItemView</a></li>
<li class="fn">18 protected functions inherited from <a href="qabstractscrollarea.html#protected-functions">QAbstractScrollArea</a></li>
<li class="fn">3 protected functions inherited from <a href="qframe.html#protected-functions">QFrame</a></li>
<li class="fn">37 protected functions inherited from <a href="qwidget.html#protected-functions">QWidget</a></li>
<li class="fn">8 protected functions inherited from <a href="qobject.html#protected-functions">QObject</a></li>
<li class="fn">1 protected function inherited from <a href="qpaintdevice.html#protected-functions">QPaintDevice</a></li>
</ul>
<h3>Additional Inherited Members</h3>
<ul>
<li class="fn">4 static public members inherited from <a href="qwidget.html#static-public-members">QWidget</a></li>
<li class="fn">7 static public members inherited from <a href="qobject.html#static-public-members">QObject</a></li>
<li class="fn">4 protected slots inherited from <a href="qtreeview.html#protected-slots">QTreeView</a></li>
<li class="fn">9 protected slots inherited from <a href="qabstractitemview.html#protected-slots">QAbstractItemView</a></li>
<li class="fn">1 protected slot inherited from <a href="qabstractscrollarea.html#protected-slots">QAbstractScrollArea</a></li>
<li class="fn">1 protected slot inherited from <a href="qwidget.html#protected-slots">QWidget</a></li>
</ul>
<a name="details"></a>
<!-- $$$QTreeWidget-description -->
<div class="descr">
<h2>Detailed Description</h2>
<p>The QTreeWidget class provides a tree view that uses a predefined tree model.</p>
<p>The QTreeWidget class is a convenience class that provides a standard tree widget with a classic item-based interface similar to that used by the <a href="qlistview.html">QListView</a> class in Qt 3. This class is based on Qt's Model/View architecture and uses a default model to hold items, each of which is a <a href="qtreewidgetitem.html">QTreeWidgetItem</a>.</p>
<p>Developers who do not need the flexibility of the Model/View framework can use this class to create simple hierarchical lists very easily. A more flexible approach involves combining a <a href="qtreeview.html">QTreeView</a> with a standard item model. This allows the storage of data to be separated from its representation.</p>
<p>In its simplest form, a tree widget can be constructed in the following way:</p>
<pre class="cpp"> <span class="type">QTreeWidget</span> <span class="operator">*</span>treeWidget <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QTreeWidget</span>();
treeWidget<span class="operator">-</span><span class="operator">></span><a href="qtreewidget.html#columnCount-prop">setColumnCount</a>(<span class="number">1</span>);
<span class="type"><a href="qlist.html">QList</a></span><span class="operator"><</span><span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> <span class="operator">*</span><span class="operator">></span> items;
<span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> <span class="number">10</span>; <span class="operator">+</span><span class="operator">+</span>i)
items<span class="operator">.</span>append(<span class="keyword">new</span> <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span>((<span class="type">QTreeWidget</span><span class="operator">*</span>)<span class="number">0</span><span class="operator">,</span> <span class="type"><a href="qstringlist.html">QStringList</a></span>(<span class="type"><a href="qstring.html">QString</a></span>(<span class="string">"item: %1"</span>)<span class="operator">.</span>arg(i))));
treeWidget<span class="operator">-</span><span class="operator">></span><a href="qtreewidget.html#insertTopLevelItems">insertTopLevelItems</a>(<span class="number">0</span><span class="operator">,</span> items);</pre>
<p>Before items can be added to the tree widget, the number of columns must be set with <a href="qtreewidget.html#columnCount-prop">setColumnCount</a>(). This allows each item to have one or more labels or other decorations. The number of columns in use can be found with the <a href="qtreewidget.html#columnCount-prop">columnCount</a>() function.</p>
<p>The tree can have a header that contains a section for each column in the widget. It is easiest to set up the labels for each section by supplying a list of strings with <a href="qtreewidget.html#setHeaderLabels">setHeaderLabels</a>(), but a custom header can be constructed with a <a href="qtreewidgetitem.html">QTreeWidgetItem</a> and inserted into the tree with the <a href="qtreewidget.html#setHeaderItem">setHeaderItem</a>() function.</p>
<p>The items in the tree can be sorted by column according to a predefined sort order. If sorting is enabled, the user can sort the items by clicking on a column header. Sorting can be enabled or disabled by calling <a href="qtreeview.html#sortingEnabled-prop">setSortingEnabled()</a>. The <a href="qtreeview.html#sortingEnabled-prop">isSortingEnabled()</a> function indicates whether sorting is enabled.</p>
<table class="generic" width="100%">
<tr valign="top" class="odd"><td ><img src="images/windowsxp-treeview.png" alt="Screenshot of a Windows XP style tree widget" /></td><td ><img src="images/macintosh-treeview.png" alt="Screenshot of a Macintosh style tree widget" /></td><td ><img src="images/plastique-treeview.png" alt="Screenshot of a Plastique style tree widget" /></td></tr>
<tr valign="top" class="even"><td >A <a href="gallery-windowsxp.html">Windows XP style</a> tree widget.</td><td >A <a href="gallery-macintosh.html">Macintosh style</a> tree widget.</td><td >A <a href="gallery-plastique.html">Plastique style</a> tree widget.</td></tr>
</table>
</div>
<p><b>See also </b><a href="qtreewidgetitem.html">QTreeWidgetItem</a>, <a href="qtreewidgetitemiterator.html">QTreeWidgetItemIterator</a>, <a href="qtreeview.html">QTreeView</a>, <a href="model-view-programming.html">Model/View Programming</a>, and <a href="tools-settingseditor.html">Settings Editor Example</a>.</p>
<!-- @@@QTreeWidget -->
<div class="prop">
<h2>Property Documentation</h2>
<!-- $$$columnCount-prop$$$columnCount$$$setColumnCountint -->
<h3 class="fn"><a name="columnCount-prop"></a><span class="name">columnCount</span> : <span class="type">int</span></h3>
<p>This property holds the number of columns displayed in the tree widget.</p>
<p>By default, this property has a value of 1.</p>
<p><b>Access functions:</b></p>
<table class="alignedsummary">
<tr><td class="memItemLeft topAlign rightAlign"> int </td><td class="memItemRight bottomAlign"><span class="name"><b>columnCount</b></span> () const</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><span class="name"><b>setColumnCount</b></span> ( int <i>columns</i> )</td></tr>
</table>
<!-- @@@columnCount -->
<!-- $$$topLevelItemCount-prop$$$topLevelItemCount -->
<h3 class="fn"><a name="topLevelItemCount-prop"></a><span class="name">topLevelItemCount</span> : const <span class="type">int</span></h3>
<p>This property holds the number of top-level items.</p>
<p>By default, this property has a value of 0.</p>
<p><b>Access functions:</b></p>
<table class="alignedsummary">
<tr><td class="memItemLeft topAlign rightAlign"> int </td><td class="memItemRight bottomAlign"><span class="name"><b>topLevelItemCount</b></span> () const</td></tr>
</table>
<p><b>See also </b><a href="qtreewidget.html#columnCount-prop">columnCount</a>() and <a href="qtreewidget.html#currentItem">currentItem</a>().</p>
<!-- @@@topLevelItemCount -->
</div>
<div class="func">
<h2>Member Function Documentation</h2>
<!-- $$$QTreeWidget[overload1]$$$QTreeWidgetQWidget* -->
<h3 class="fn"><a name="QTreeWidget"></a>QTreeWidget::<span class="name">QTreeWidget</span> ( <span class="type"><a href="qwidget.html">QWidget</a></span> * <i>parent</i> = 0 )</h3>
<p>Constructs a tree widget with the given <i>parent</i>.</p>
<!-- @@@QTreeWidget -->
<!-- $$$~QTreeWidget[overload1]$$$~QTreeWidget -->
<h3 class="fn"><a name="dtor.QTreeWidget"></a>QTreeWidget::<span class="name">~QTreeWidget</span> ()</h3>
<p>Destroys the tree widget and all its items.</p>
<!-- @@@~QTreeWidget -->
<!-- $$$addTopLevelItem[overload1]$$$addTopLevelItemQTreeWidgetItem* -->
<h3 class="fn"><a name="addTopLevelItem"></a><span class="type">void</span> QTreeWidget::<span class="name">addTopLevelItem</span> ( <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>item</i> )</h3>
<p>Appends the <i>item</i> as a top-level item in the widget.</p>
<p>This function was introduced in Qt 4.1.</p>
<p><b>See also </b><a href="qtreewidget.html#insertTopLevelItem">insertTopLevelItem</a>().</p>
<!-- @@@addTopLevelItem -->
<!-- $$$addTopLevelItems[overload1]$$$addTopLevelItemsconstQList<QTreeWidgetItem*>& -->
<h3 class="fn"><a name="addTopLevelItems"></a><span class="type">void</span> QTreeWidget::<span class="name">addTopLevelItems</span> ( const <span class="type"><a href="qlist.html">QList</a></span><<span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> *> & <i>items</i> )</h3>
<p>Appends the list of <i>items</i> as a top-level items in the widget.</p>
<p><b>See also </b><a href="qtreewidget.html#insertTopLevelItems">insertTopLevelItems</a>().</p>
<!-- @@@addTopLevelItems -->
<!-- $$$clear[overload1]$$$clear -->
<h3 class="fn"><a name="clear"></a><span class="type">void</span> QTreeWidget::<span class="name">clear</span> ()<tt> [slot]</tt></h3>
<p>Clears the tree widget by removing all of its items and selections.</p>
<p><b>Note:</b> Since each item is removed from the tree widget before being deleted, the return value of <a href="qtreewidgetitem.html#treeWidget">QTreeWidgetItem::treeWidget</a>() will be invalid when called from an item's destructor.</p>
<p><b>See also </b><a href="qtreewidget.html#takeTopLevelItem">takeTopLevelItem</a>(), <a href="qtreewidget.html#topLevelItemCount-prop">topLevelItemCount</a>(), and <a href="qtreewidget.html#columnCount-prop">columnCount</a>().</p>
<!-- @@@clear -->
<!-- $$$closePersistentEditor[overload1]$$$closePersistentEditorQTreeWidgetItem*int -->
<h3 class="fn"><a name="closePersistentEditor"></a><span class="type">void</span> QTreeWidget::<span class="name">closePersistentEditor</span> ( <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>item</i>, <span class="type">int</span> <i>column</i> = 0 )</h3>
<p>Closes the persistent editor for the <i>item</i> in the given <i>column</i>.</p>
<p>This function has no effect if no persistent editor is open for this combination of item and column.</p>
<p><b>See also </b><a href="qtreewidget.html#openPersistentEditor">openPersistentEditor</a>().</p>
<!-- @@@closePersistentEditor -->
<!-- $$$collapseItem[overload1]$$$collapseItemconstQTreeWidgetItem* -->
<h3 class="fn"><a name="collapseItem"></a><span class="type">void</span> QTreeWidget::<span class="name">collapseItem</span> ( const <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>item</i> )<tt> [slot]</tt></h3>
<p>Closes the <i>item</i>. This causes the tree containing the item's children to be collapsed.</p>
<p><b>See also </b><a href="qtreewidget.html#expandItem">expandItem</a>(), <a href="qtreewidget.html#currentItem">currentItem</a>(), <a href="qtreewidget.html#itemAt">itemAt</a>(), and <a href="qtreewidget.html#topLevelItem">topLevelItem</a>().</p>
<!-- @@@collapseItem -->
<!-- $$$currentColumn[overload1]$$$currentColumn -->
<h3 class="fn"><a name="currentColumn"></a><span class="type">int</span> QTreeWidget::<span class="name">currentColumn</span> () const</h3>
<p>Returns the current column in the tree widget.</p>
<p>This function was introduced in Qt 4.1.</p>
<p><b>See also </b><a href="qtreewidget.html#setCurrentItem">setCurrentItem</a>() and <a href="qtreewidget.html#columnCount-prop">columnCount</a>().</p>
<!-- @@@currentColumn -->
<!-- $$$currentItem[overload1]$$$currentItem -->
<h3 class="fn"><a name="currentItem"></a><span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * QTreeWidget::<span class="name">currentItem</span> () const</h3>
<p>Returns the current item in the tree widget.</p>
<p><b>See also </b><a href="qtreewidget.html#setCurrentItem">setCurrentItem</a>() and <a href="qtreewidget.html#currentItemChanged">currentItemChanged</a>().</p>
<!-- @@@currentItem -->
<!-- $$$currentItemChanged[overload1]$$$currentItemChangedQTreeWidgetItem*QTreeWidgetItem* -->
<h3 class="fn"><a name="currentItemChanged"></a><span class="type">void</span> QTreeWidget::<span class="name">currentItemChanged</span> ( <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>current</i>, <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>previous</i> )<tt> [signal]</tt></h3>
<p>This signal is emitted when the current item changes. The current item is specified by <i>current</i>, and this replaces the <i>previous</i> current item.</p>
<p><b>See also </b><a href="qtreewidget.html#setCurrentItem">setCurrentItem</a>().</p>
<!-- @@@currentItemChanged -->
<!-- $$$dropEvent[overload1]$$$dropEventQDropEvent* -->
<h3 class="fn"><a name="dropEvent"></a><span class="type">void</span> QTreeWidget::<span class="name">dropEvent</span> ( <span class="type"><a href="qdropevent.html">QDropEvent</a></span> * <i>event</i> )<tt> [virtual protected]</tt></h3>
<p>Reimplemented from <a href="qwidget.html#dropEvent">QWidget::dropEvent</a>().</p>
<!-- @@@dropEvent -->
<!-- $$$dropMimeData[overload1]$$$dropMimeDataQTreeWidgetItem*intconstQMimeData*Qt::DropAction -->
<h3 class="fn"><a name="dropMimeData"></a><span class="type">bool</span> QTreeWidget::<span class="name">dropMimeData</span> ( <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>parent</i>, <span class="type">int</span> <i>index</i>, const <span class="type"><a href="qmimedata.html">QMimeData</a></span> * <i>data</i>, <span class="type"><a href="qt.html#DropAction-enum">Qt::DropAction</a></span> <i>action</i> )<tt> [virtual protected]</tt></h3>
<p>Handles the <i>data</i> supplied by a drag and drop operation that ended with the given <i>action</i> in the <i>index</i> in the given <i>parent</i> item.</p>
<p>The default implementation returns true if the drop was successfully handled by decoding the mime data and inserting it into the model; otherwise it returns false.</p>
<p><b>See also </b><a href="qtreewidget.html#supportedDropActions">supportedDropActions</a>().</p>
<!-- @@@dropMimeData -->
<!-- $$$editItem[overload1]$$$editItemQTreeWidgetItem*int -->
<h3 class="fn"><a name="editItem"></a><span class="type">void</span> QTreeWidget::<span class="name">editItem</span> ( <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>item</i>, <span class="type">int</span> <i>column</i> = 0 )</h3>
<p>Starts editing the <i>item</i> in the given <i>column</i> if it is editable.</p>
<!-- @@@editItem -->
<!-- $$$event[overload1]$$$eventQEvent* -->
<h3 class="fn"><a name="event"></a><span class="type">bool</span> QTreeWidget::<span class="name">event</span> ( <span class="type"><a href="qevent.html">QEvent</a></span> * <i>e</i> )<tt> [virtual protected]</tt></h3>
<p>Reimplemented from <a href="qobject.html#event">QObject::event</a>().</p>
<!-- @@@event -->
<!-- $$$expandItem[overload1]$$$expandItemconstQTreeWidgetItem* -->
<h3 class="fn"><a name="expandItem"></a><span class="type">void</span> QTreeWidget::<span class="name">expandItem</span> ( const <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>item</i> )<tt> [slot]</tt></h3>
<p>Expands the <i>item</i>. This causes the tree containing the item's children to be expanded.</p>
<p><b>See also </b><a href="qtreewidget.html#collapseItem">collapseItem</a>(), <a href="qtreewidget.html#currentItem">currentItem</a>(), <a href="qtreewidget.html#itemAt">itemAt</a>(), <a href="qtreewidget.html#topLevelItem">topLevelItem</a>(), and <a href="qtreewidget.html#itemExpanded">itemExpanded</a>().</p>
<!-- @@@expandItem -->
<!-- $$$findItems[overload1]$$$findItemsconstQString&Qt::MatchFlagsint -->
<h3 class="fn"><a name="findItems"></a><span class="type"><a href="qlist.html">QList</a></span><<span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> *> QTreeWidget::<span class="name">findItems</span> ( const <span class="type"><a href="qstring.html">QString</a></span> & <i>text</i>, <span class="type"><a href="qt.html#MatchFlag-enum">Qt::MatchFlags</a></span> <i>flags</i>, <span class="type">int</span> <i>column</i> = 0 ) const</h3>
<p>Returns a list of items that match the given <i>text</i>, using the given <i>flags</i>, in the given <i>column</i>.</p>
<!-- @@@findItems -->
<!-- $$$headerItem[overload1]$$$headerItem -->
<h3 class="fn"><a name="headerItem"></a><span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * QTreeWidget::<span class="name">headerItem</span> () const</h3>
<p>Returns the item used for the tree widget's header.</p>
<p><b>See also </b><a href="qtreewidget.html#setHeaderItem">setHeaderItem</a>().</p>
<!-- @@@headerItem -->
<!-- $$$indexFromItem[overload1]$$$indexFromItemQTreeWidgetItem*int -->
<h3 class="fn"><a name="indexFromItem"></a><span class="type"><a href="qmodelindex.html">QModelIndex</a></span> QTreeWidget::<span class="name">indexFromItem</span> ( <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>item</i>, <span class="type">int</span> <i>column</i> = 0 ) const<tt> [protected]</tt></h3>
<p>Returns the <a href="qmodelindex.html">QModelIndex</a> assocated with the given <i>item</i> in the given <i>column</i>.</p>
<p><b>See also </b><a href="qtreewidget.html#itemFromIndex">itemFromIndex</a>() and <a href="qtreewidget.html#topLevelItem">topLevelItem</a>().</p>
<!-- @@@indexFromItem -->
<!-- $$$indexOfTopLevelItem[overload1]$$$indexOfTopLevelItemQTreeWidgetItem* -->
<h3 class="fn"><a name="indexOfTopLevelItem"></a><span class="type">int</span> QTreeWidget::<span class="name">indexOfTopLevelItem</span> ( <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>item</i> ) const</h3>
<p>Returns the index of the given top-level <i>item</i>, or -1 if the item cannot be found.</p>
<p><b>See also </b><a href="qtreewidget.html#sortItems">sortItems</a>() and <a href="qtreewidget.html#topLevelItemCount-prop">topLevelItemCount</a>().</p>
<!-- @@@indexOfTopLevelItem -->
<!-- $$$insertTopLevelItem[overload1]$$$insertTopLevelItemintQTreeWidgetItem* -->
<h3 class="fn"><a name="insertTopLevelItem"></a><span class="type">void</span> QTreeWidget::<span class="name">insertTopLevelItem</span> ( <span class="type">int</span> <i>index</i>, <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>item</i> )</h3>
<p>Inserts the <i>item</i> at <i>index</i> in the top level in the view.</p>
<p>If the item has already been inserted somewhere else it wont be inserted.</p>
<p><b>See also </b><a href="qtreewidget.html#addTopLevelItem">addTopLevelItem</a>() and <a href="qtreewidget.html#columnCount-prop">columnCount</a>().</p>
<!-- @@@insertTopLevelItem -->
<!-- $$$insertTopLevelItems[overload1]$$$insertTopLevelItemsintconstQList<QTreeWidgetItem*>& -->
<h3 class="fn"><a name="insertTopLevelItems"></a><span class="type">void</span> QTreeWidget::<span class="name">insertTopLevelItems</span> ( <span class="type">int</span> <i>index</i>, const <span class="type"><a href="qlist.html">QList</a></span><<span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> *> & <i>items</i> )</h3>
<p>Inserts the list of <i>items</i> at <i>index</i> in the top level in the view.</p>
<p>Items that have already been inserted somewhere else wont be inserted.</p>
<p>This function was introduced in Qt 4.1.</p>
<p><b>See also </b><a href="qtreewidget.html#addTopLevelItems">addTopLevelItems</a>().</p>
<!-- @@@insertTopLevelItems -->
<!-- $$$invisibleRootItem[overload1]$$$invisibleRootItem -->
<h3 class="fn"><a name="invisibleRootItem"></a><span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * QTreeWidget::<span class="name">invisibleRootItem</span> () const</h3>
<p>Returns the tree widget's invisible root item.</p>
<p>The invisible root item provides access to the tree widget's top-level items through the <a href="qtreewidgetitem.html">QTreeWidgetItem</a> API, making it possible to write functions that can treat top-level items and their children in a uniform way; for example, recursive functions.</p>
<p>This function was introduced in Qt 4.2.</p>
<!-- @@@invisibleRootItem -->
<!-- $$$isFirstItemColumnSpanned[overload1]$$$isFirstItemColumnSpannedconstQTreeWidgetItem* -->
<h3 class="fn"><a name="isFirstItemColumnSpanned"></a><span class="type">bool</span> QTreeWidget::<span class="name">isFirstItemColumnSpanned</span> ( const <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>item</i> ) const</h3>
<p>Returns true if the given <i>item</i> is set to show only one section over all columns; otherwise returns false.</p>
<p>This function was introduced in Qt 4.3.</p>
<p><b>See also </b><a href="qtreewidget.html#setFirstItemColumnSpanned">setFirstItemColumnSpanned</a>().</p>
<!-- @@@isFirstItemColumnSpanned -->
<!-- $$$itemAbove[overload1]$$$itemAboveconstQTreeWidgetItem* -->
<h3 class="fn"><a name="itemAbove"></a><span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * QTreeWidget::<span class="name">itemAbove</span> ( const <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>item</i> ) const</h3>
<p>Returns the item above the given <i>item</i>.</p>
<p>This function was introduced in Qt 4.3.</p>
<!-- @@@itemAbove -->
<!-- $$$itemActivated[overload1]$$$itemActivatedQTreeWidgetItem*int -->
<h3 class="fn"><a name="itemActivated"></a><span class="type">void</span> QTreeWidget::<span class="name">itemActivated</span> ( <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>item</i>, <span class="type">int</span> <i>column</i> )<tt> [signal]</tt></h3>
<p>This signal is emitted when the user activates an item by single- or double-clicking (depending on the platform, i.e. on the <a href="qstyle.html#StyleHint-enum">QStyle::SH_ItemView_ActivateItemOnSingleClick</a> style hint) or pressing a special key (e.g., <b>Enter</b>).</p>
<p>The specified <i>item</i> is the item that was clicked, or 0 if no item was clicked. The <i>column</i> is the item's column that was clicked, or -1 if no item was clicked.</p>
<!-- @@@itemActivated -->
<!-- $$$itemAt[overload1]$$$itemAtconstQPoint& -->
<h3 class="fn"><a name="itemAt"></a><span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * QTreeWidget::<span class="name">itemAt</span> ( const <span class="type"><a href="qpoint.html">QPoint</a></span> & <i>p</i> ) const</h3>
<p>Returns a pointer to the item at the coordinates <i>p</i>. The coordinates are relative to the tree widget's <a href="qabstractscrollarea.html#viewport">viewport()</a>.</p>
<p><b>See also </b><a href="qtreewidget.html#visualItemRect">visualItemRect</a>().</p>
<!-- @@@itemAt -->
<!-- $$$itemAt$$$itemAtintint -->
<h3 class="fn"><a name="itemAt-2"></a><span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * QTreeWidget::<span class="name">itemAt</span> ( <span class="type">int</span> <i>x</i>, <span class="type">int</span> <i>y</i> ) const</h3>
<p>This is an overloaded function.</p>
<p>Returns a pointer to the item at the coordinates (<i>x</i>, <i>y</i>). The coordinates are relative to the tree widget's <a href="qabstractscrollarea.html#viewport">viewport()</a>.</p>
<!-- @@@itemAt -->
<!-- $$$itemBelow[overload1]$$$itemBelowconstQTreeWidgetItem* -->
<h3 class="fn"><a name="itemBelow"></a><span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * QTreeWidget::<span class="name">itemBelow</span> ( const <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>item</i> ) const</h3>
<p>Returns the item visually below the given <i>item</i>.</p>
<p>This function was introduced in Qt 4.3.</p>
<!-- @@@itemBelow -->
<!-- $$$itemChanged[overload1]$$$itemChangedQTreeWidgetItem*int -->
<h3 class="fn"><a name="itemChanged"></a><span class="type">void</span> QTreeWidget::<span class="name">itemChanged</span> ( <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>item</i>, <span class="type">int</span> <i>column</i> )<tt> [signal]</tt></h3>
<p>This signal is emitted when the contents of the <i>column</i> in the specified <i>item</i> changes.</p>
<!-- @@@itemChanged -->
<!-- $$$itemClicked[overload1]$$$itemClickedQTreeWidgetItem*int -->
<h3 class="fn"><a name="itemClicked"></a><span class="type">void</span> QTreeWidget::<span class="name">itemClicked</span> ( <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>item</i>, <span class="type">int</span> <i>column</i> )<tt> [signal]</tt></h3>
<p>This signal is emitted when the user clicks inside the widget.</p>
<p>The specified <i>item</i> is the item that was clicked. The <i>column</i> is the item's column that was clicked. If no item was clicked, no signal will be emitted.</p>
<!-- @@@itemClicked -->
<!-- $$$itemCollapsed[overload1]$$$itemCollapsedQTreeWidgetItem* -->
<h3 class="fn"><a name="itemCollapsed"></a><span class="type">void</span> QTreeWidget::<span class="name">itemCollapsed</span> ( <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>item</i> )<tt> [signal]</tt></h3>
<p>This signal is emitted when the specified <i>item</i> is collapsed so that none of its children are displayed.</p>
<p><b>Note:</b> This signal will not be emitted if an item changes its state when <a href="qtreeview.html#collapseAll">collapseAll</a>() is invoked.</p>
<p><b>See also </b><a href="qtreewidgetitem.html#isExpanded">QTreeWidgetItem::isExpanded</a>(), <a href="qtreewidget.html#itemExpanded">itemExpanded</a>(), and <a href="qtreewidget.html#collapseItem">collapseItem</a>().</p>
<!-- @@@itemCollapsed -->
<!-- $$$itemDoubleClicked[overload1]$$$itemDoubleClickedQTreeWidgetItem*int -->
<h3 class="fn"><a name="itemDoubleClicked"></a><span class="type">void</span> QTreeWidget::<span class="name">itemDoubleClicked</span> ( <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>item</i>, <span class="type">int</span> <i>column</i> )<tt> [signal]</tt></h3>
<p>This signal is emitted when the user double clicks inside the widget.</p>
<p>The specified <i>item</i> is the item that was clicked, or 0 if no item was clicked. The <i>column</i> is the item's column that was clicked. If no item was double clicked, no signal will be emitted.</p>
<!-- @@@itemDoubleClicked -->
<!-- $$$itemEntered[overload1]$$$itemEnteredQTreeWidgetItem*int -->
<h3 class="fn"><a name="itemEntered"></a><span class="type">void</span> QTreeWidget::<span class="name">itemEntered</span> ( <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>item</i>, <span class="type">int</span> <i>column</i> )<tt> [signal]</tt></h3>
<p>This signal is emitted when the mouse cursor enters an <i>item</i> over the specified <i>column</i>. <a href="qtreewidget.html">QTreeWidget</a> mouse tracking needs to be enabled for this feature to work.</p>
<!-- @@@itemEntered -->
<!-- $$$itemExpanded[overload1]$$$itemExpandedQTreeWidgetItem* -->
<h3 class="fn"><a name="itemExpanded"></a><span class="type">void</span> QTreeWidget::<span class="name">itemExpanded</span> ( <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>item</i> )<tt> [signal]</tt></h3>
<p>This signal is emitted when the specified <i>item</i> is expanded so that all of its children are displayed.</p>
<p><b>Note:</b> This signal will not be emitted if an item changes its state when <a href="qtreeview.html#expandAll">expandAll</a>() is invoked.</p>
<p><b>See also </b><a href="qtreewidget-obsolete.html#setItemExpanded" class="obsolete">setItemExpanded</a>(), <a href="qtreewidgetitem.html#isExpanded">QTreeWidgetItem::isExpanded</a>(), <a href="qtreewidget.html#itemCollapsed">itemCollapsed</a>(), and <a href="qtreewidget.html#expandItem">expandItem</a>().</p>
<!-- @@@itemExpanded -->
<!-- $$$itemFromIndex[overload1]$$$itemFromIndexconstQModelIndex& -->
<h3 class="fn"><a name="itemFromIndex"></a><span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * QTreeWidget::<span class="name">itemFromIndex</span> ( const <span class="type"><a href="qmodelindex.html">QModelIndex</a></span> & <i>index</i> ) const<tt> [protected]</tt></h3>
<p>Returns a pointer to the <a href="qtreewidgetitem.html">QTreeWidgetItem</a> assocated with the given <i>index</i>.</p>
<p><b>See also </b><a href="qtreewidget.html#indexFromItem">indexFromItem</a>().</p>
<!-- @@@itemFromIndex -->
<!-- $$$itemPressed[overload1]$$$itemPressedQTreeWidgetItem*int -->
<h3 class="fn"><a name="itemPressed"></a><span class="type">void</span> QTreeWidget::<span class="name">itemPressed</span> ( <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>item</i>, <span class="type">int</span> <i>column</i> )<tt> [signal]</tt></h3>
<p>This signal is emitted when the user presses a mouse button inside the widget.</p>
<p>The specified <i>item</i> is the item that was clicked, or 0 if no item was clicked. The <i>column</i> is the item's column that was clicked, or -1 if no item was clicked.</p>
<!-- @@@itemPressed -->
<!-- $$$itemSelectionChanged[overload1]$$$itemSelectionChanged -->
<h3 class="fn"><a name="itemSelectionChanged"></a><span class="type">void</span> QTreeWidget::<span class="name">itemSelectionChanged</span> ()<tt> [signal]</tt></h3>
<p>This signal is emitted when the selection changes in the tree widget. The current selection can be found with <a href="qtreewidget.html#selectedItems">selectedItems</a>().</p>
<!-- @@@itemSelectionChanged -->
<!-- $$$itemWidget[overload1]$$$itemWidgetQTreeWidgetItem*int -->
<h3 class="fn"><a name="itemWidget"></a><span class="type"><a href="qwidget.html">QWidget</a></span> * QTreeWidget::<span class="name">itemWidget</span> ( <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>item</i>, <span class="type">int</span> <i>column</i> ) const</h3>
<p>Returns the widget displayed in the cell specified by <i>item</i> and the given <i>column</i>.</p>
<p><b>Note:</b> The tree takes ownership of the widget.</p>
<p>This function was introduced in Qt 4.1.</p>
<p><b>See also </b><a href="qtreewidget.html#setItemWidget">setItemWidget</a>().</p>
<!-- @@@itemWidget -->
<!-- $$$mimeData[overload1]$$$mimeDataconstQList<QTreeWidgetItem*> -->
<h3 class="fn"><a name="mimeData"></a><span class="type"><a href="qmimedata.html">QMimeData</a></span> * QTreeWidget::<span class="name">mimeData</span> ( const <span class="type"><a href="qlist.html">QList</a></span><<span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> *> <i>items</i> ) const<tt> [virtual protected]</tt></h3>
<p>Returns an object that contains a serialized description of the specified <i>items</i>. The format used to describe the items is obtained from the <a href="qtreewidget.html#mimeTypes">mimeTypes</a>() function.</p>
<p>If the list of items is empty, 0 is returned rather than a serialized empty list.</p>
<!-- @@@mimeData -->
<!-- $$$mimeTypes[overload1]$$$mimeTypes -->
<h3 class="fn"><a name="mimeTypes"></a><span class="type"><a href="qstringlist.html">QStringList</a></span> QTreeWidget::<span class="name">mimeTypes</span> () const<tt> [virtual protected]</tt></h3>
<p>Returns a list of MIME types that can be used to describe a list of treewidget items.</p>
<p><b>See also </b><a href="qtreewidget.html#mimeData">mimeData</a>().</p>
<!-- @@@mimeTypes -->
<!-- $$$openPersistentEditor[overload1]$$$openPersistentEditorQTreeWidgetItem*int -->
<h3 class="fn"><a name="openPersistentEditor"></a><span class="type">void</span> QTreeWidget::<span class="name">openPersistentEditor</span> ( <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>item</i>, <span class="type">int</span> <i>column</i> = 0 )</h3>
<p>Opens a persistent editor for the <i>item</i> in the given <i>column</i>.</p>
<p><b>See also </b><a href="qtreewidget.html#closePersistentEditor">closePersistentEditor</a>().</p>
<!-- @@@openPersistentEditor -->
<!-- $$$removeItemWidget[overload1]$$$removeItemWidgetQTreeWidgetItem*int -->
<h3 class="fn"><a name="removeItemWidget"></a><span class="type">void</span> QTreeWidget::<span class="name">removeItemWidget</span> ( <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>item</i>, <span class="type">int</span> <i>column</i> )</h3>
<p>Removes the widget set in the given <i>item</i> in the given <i>column</i>.</p>
<p>This function was introduced in Qt 4.3.</p>
<!-- @@@removeItemWidget -->
<!-- $$$scrollToItem[overload1]$$$scrollToItemconstQTreeWidgetItem*QAbstractItemView::ScrollHint -->
<h3 class="fn"><a name="scrollToItem"></a><span class="type">void</span> QTreeWidget::<span class="name">scrollToItem</span> ( const <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>item</i>, <span class="type"><a href="qabstractitemview.html#ScrollHint-enum">QAbstractItemView::ScrollHint</a></span> <i>hint</i> = EnsureVisible )<tt> [slot]</tt></h3>
<p>Ensures that the <i>item</i> is visible, scrolling the view if necessary using the specified <i>hint</i>.</p>
<p><b>See also </b><a href="qtreewidget.html#currentItem">currentItem</a>(), <a href="qtreewidget.html#itemAt">itemAt</a>(), and <a href="qtreewidget.html#topLevelItem">topLevelItem</a>().</p>
<!-- @@@scrollToItem -->
<!-- $$$selectedItems[overload1]$$$selectedItems -->
<h3 class="fn"><a name="selectedItems"></a><span class="type"><a href="qlist.html">QList</a></span><<span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> *> QTreeWidget::<span class="name">selectedItems</span> () const</h3>
<p>Returns a list of all selected non-hidden items.</p>
<p><b>See also </b><a href="qtreewidget.html#itemSelectionChanged">itemSelectionChanged</a>().</p>
<!-- @@@selectedItems -->
<!-- $$$setCurrentItem[overload1]$$$setCurrentItemQTreeWidgetItem* -->
<h3 class="fn"><a name="setCurrentItem"></a><span class="type">void</span> QTreeWidget::<span class="name">setCurrentItem</span> ( <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>item</i> )</h3>
<p>Sets the current <i>item</i> in the tree widget.</p>
<p>Unless the selection mode is <a href="qabstractitemview.html#SelectionMode-enum">NoSelection</a>, the item is also be selected.</p>
<p><b>See also </b><a href="qtreewidget.html#currentItem">currentItem</a>() and <a href="qtreewidget.html#currentItemChanged">currentItemChanged</a>().</p>
<!-- @@@setCurrentItem -->
<!-- $$$setCurrentItem$$$setCurrentItemQTreeWidgetItem*int -->
<h3 class="fn"><a name="setCurrentItem-2"></a><span class="type">void</span> QTreeWidget::<span class="name">setCurrentItem</span> ( <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>item</i>, <span class="type">int</span> <i>column</i> )</h3>
<p>Sets the current <i>item</i> in the tree widget and the current column to <i>column</i>.</p>
<p>This function was introduced in Qt 4.1.</p>
<p><b>See also </b><a href="qtreewidget.html#currentItem">currentItem</a>().</p>
<!-- @@@setCurrentItem -->
<!-- $$$setCurrentItem$$$setCurrentItemQTreeWidgetItem*intQItemSelectionModel::SelectionFlags -->
<h3 class="fn"><a name="setCurrentItem-3"></a><span class="type">void</span> QTreeWidget::<span class="name">setCurrentItem</span> ( <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>item</i>, <span class="type">int</span> <i>column</i>, <span class="type"><a href="qitemselectionmodel.html#SelectionFlag-enum">QItemSelectionModel::SelectionFlags</a></span> <i>command</i> )</h3>
<p>Sets the current <i>item</i> in the tree widget and the current column to <i>column</i>, using the given <i>command</i>.</p>
<p>This function was introduced in Qt 4.4.</p>
<p><b>See also </b><a href="qtreewidget.html#currentItem">currentItem</a>().</p>
<!-- @@@setCurrentItem -->
<!-- $$$setFirstItemColumnSpanned[overload1]$$$setFirstItemColumnSpannedconstQTreeWidgetItem*bool -->
<h3 class="fn"><a name="setFirstItemColumnSpanned"></a><span class="type">void</span> QTreeWidget::<span class="name">setFirstItemColumnSpanned</span> ( const <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>item</i>, <span class="type">bool</span> <i>span</i> )</h3>
<p>Sets the given <i>item</i> to only show one section for all columns if <i>span</i> is true; otherwise the item will show one section per column.</p>
<p>This function was introduced in Qt 4.3.</p>
<p><b>See also </b><a href="qtreewidget.html#isFirstItemColumnSpanned">isFirstItemColumnSpanned</a>().</p>
<!-- @@@setFirstItemColumnSpanned -->
<!-- $$$setHeaderItem[overload1]$$$setHeaderItemQTreeWidgetItem* -->
<h3 class="fn"><a name="setHeaderItem"></a><span class="type">void</span> QTreeWidget::<span class="name">setHeaderItem</span> ( <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>item</i> )</h3>
<p>Sets the header <i>item</i> for the tree widget. The label for each column in the header is supplied by the corresponding label in the item.</p>
<p>The tree widget takes ownership of the item.</p>
<p><b>See also </b><a href="qtreewidget.html#headerItem">headerItem</a>() and <a href="qtreewidget.html#setHeaderLabels">setHeaderLabels</a>().</p>
<!-- @@@setHeaderItem -->
<!-- $$$setHeaderLabel[overload1]$$$setHeaderLabelconstQString& -->
<h3 class="fn"><a name="setHeaderLabel"></a><span class="type">void</span> QTreeWidget::<span class="name">setHeaderLabel</span> ( const <span class="type"><a href="qstring.html">QString</a></span> & <i>label</i> )</h3>
<p>Same as setHeaderLabels(<a href="qstringlist.html">QStringList</a>(<i>label</i>)).</p>
<p>This function was introduced in Qt 4.2.</p>
<!-- @@@setHeaderLabel -->
<!-- $$$setHeaderLabels[overload1]$$$setHeaderLabelsconstQStringList& -->
<h3 class="fn"><a name="setHeaderLabels"></a><span class="type">void</span> QTreeWidget::<span class="name">setHeaderLabels</span> ( const <span class="type"><a href="qstringlist.html">QStringList</a></span> & <i>labels</i> )</h3>
<p>Adds a column in the header for each item in the <i>labels</i> list, and sets the label for each column.</p>
<p>Note that setHeaderLabels() won't remove existing columns.</p>
<p><b>See also </b><a href="qtreewidget.html#setHeaderItem">setHeaderItem</a>() and <a href="qtreewidget.html#setHeaderLabel">setHeaderLabel</a>().</p>
<!-- @@@setHeaderLabels -->
<!-- $$$setItemWidget[overload1]$$$setItemWidgetQTreeWidgetItem*intQWidget* -->
<h3 class="fn"><a name="setItemWidget"></a><span class="type">void</span> QTreeWidget::<span class="name">setItemWidget</span> ( <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>item</i>, <span class="type">int</span> <i>column</i>, <span class="type"><a href="qwidget.html">QWidget</a></span> * <i>widget</i> )</h3>
<p>Sets the given <i>widget</i> to be displayed in the cell specified by the given <i>item</i> and <i>column</i>.</p>
<p>The given <i>widget</i>'s <a href="qwidget.html#autoFillBackground-prop">autoFillBackground</a> property must be set to true, otherwise the widget's background will be transparent, showing both the model data and the tree widget item.</p>
<p>This function should only be used to display static content in the place of a tree widget item. If you want to display custom dynamic content or implement a custom editor widget, use <a href="qtreeview.html">QTreeView</a> and subclass <a href="qitemdelegate.html">QItemDelegate</a> instead.</p>
<p>This function cannot be called before the item hierarchy has been set up, i.e., the <a href="qtreewidgetitem.html">QTreeWidgetItem</a> that will hold <i>widget</i> must have been added to the view before <i>widget</i> is set.</p>
<p><b>Note:</b> The tree takes ownership of the widget.</p>
<p>This function was introduced in Qt 4.1.</p>
<p><b>See also </b><a href="qtreewidget.html#itemWidget">itemWidget</a>() and <a href="model-view-programming.html#delegate-classes">Delegate Classes</a>.</p>
<!-- @@@setItemWidget -->
<!-- $$$setSelectionModel[overload1]$$$setSelectionModelQItemSelectionModel* -->
<h3 class="fn"><a name="setSelectionModel"></a><span class="type">void</span> QTreeWidget::<span class="name">setSelectionModel</span> ( <span class="type"><a href="qitemselectionmodel.html">QItemSelectionModel</a></span> * <i>selectionModel</i> )<tt> [virtual]</tt></h3>
<p>Reimplemented from <a href="qabstractitemview.html#setSelectionModel">QAbstractItemView::setSelectionModel</a>().</p>
<!-- @@@setSelectionModel -->
<!-- $$$sortColumn[overload1]$$$sortColumn -->
<h3 class="fn"><a name="sortColumn"></a><span class="type">int</span> QTreeWidget::<span class="name">sortColumn</span> () const</h3>
<p>Returns the column used to sort the contents of the widget.</p>
<p>This function was introduced in Qt 4.1.</p>
<p><b>See also </b><a href="qtreewidget.html#sortItems">sortItems</a>().</p>
<!-- @@@sortColumn -->
<!-- $$$sortItems[overload1]$$$sortItemsintQt::SortOrder -->
<h3 class="fn"><a name="sortItems"></a><span class="type">void</span> QTreeWidget::<span class="name">sortItems</span> ( <span class="type">int</span> <i>column</i>, <span class="type"><a href="qt.html#SortOrder-enum">Qt::SortOrder</a></span> <i>order</i> )</h3>
<p>Sorts the items in the widget in the specified <i>order</i> by the values in the given <i>column</i>.</p>
<p><b>See also </b><a href="qtreewidget.html#sortColumn">sortColumn</a>().</p>
<!-- @@@sortItems -->
<!-- $$$supportedDropActions[overload1]$$$supportedDropActions -->
<h3 class="fn"><a name="supportedDropActions"></a><span class="type"><a href="qt.html#DropAction-enum">Qt::DropActions</a></span> QTreeWidget::<span class="name">supportedDropActions</span> () const<tt> [virtual protected]</tt></h3>
<p>Returns the drop actions supported by this view.</p>
<p><b>See also </b><a href="qt.html#DropAction-enum">Qt::DropActions</a>.</p>
<!-- @@@supportedDropActions -->
<!-- $$$takeTopLevelItem[overload1]$$$takeTopLevelItemint -->
<h3 class="fn"><a name="takeTopLevelItem"></a><span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * QTreeWidget::<span class="name">takeTopLevelItem</span> ( <span class="type">int</span> <i>index</i> )</h3>
<p>Removes the top-level item at the given <i>index</i> in the tree and returns it, otherwise returns 0;</p>
<p><b>See also </b><a href="qtreewidget.html#insertTopLevelItem">insertTopLevelItem</a>(), <a href="qtreewidget.html#topLevelItem">topLevelItem</a>(), and <a href="qtreewidget.html#topLevelItemCount-prop">topLevelItemCount</a>().</p>
<!-- @@@takeTopLevelItem -->
<!-- $$$topLevelItem[overload1]$$$topLevelItemint -->
<h3 class="fn"><a name="topLevelItem"></a><span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * QTreeWidget::<span class="name">topLevelItem</span> ( <span class="type">int</span> <i>index</i> ) const</h3>
<p>Returns the top level item at the given <i>index</i>, or 0 if the item does not exist.</p>
<p><b>See also </b><a href="qtreewidget.html#topLevelItemCount-prop">topLevelItemCount</a>() and <a href="qtreewidget.html#insertTopLevelItem">insertTopLevelItem</a>().</p>
<!-- @@@topLevelItem -->
<!-- $$$visualItemRect[overload1]$$$visualItemRectconstQTreeWidgetItem* -->
<h3 class="fn"><a name="visualItemRect"></a><span class="type"><a href="qrect.html">QRect</a></span> QTreeWidget::<span class="name">visualItemRect</span> ( const <span class="type"><a href="qtreewidgetitem.html">QTreeWidgetItem</a></span> * <i>item</i> ) const</h3>
<p>Returns the rectangle on the viewport occupied by the item at <i>item</i>.</p>
<p><b>See also </b><a href="qtreewidget.html#itemAt">itemAt</a>().</p>
<!-- @@@visualItemRect -->
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