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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>QListBox Class Reference</h1>
<p>The QListBox widget provides a list of selectable, read-only items.
<a href="#details">More...</a>
<p><tt>#include <<a href="qlistbox-h.html">qlistbox.h</a>></tt>
<p>Inherits <a href="qscrollview.html">QScrollView</a>.
<p><a href="qlistbox-members.html">List of all member functions.</a>
<h2>Public Members</h2>
<ul>
<li><div class=fn><a href="#QListBox"><b>QListBox</b></a> ( QWidget * parent = 0, const char * name = 0, WFlags f = 0 )</div></li>
<li><div class=fn><a href="#~QListBox"><b>~QListBox</b></a> ()</div></li>
<li><div class=fn>uint <a href="#count"><b>count</b></a> () const</div></li>
<li><div class=fn>void <a href="#insertStringList"><b>insertStringList</b></a> ( const QStringList & list, int index = -1 )</div></li>
<li><div class=fn>void <a href="#insertStrList"><b>insertStrList</b></a> ( const QStrList * list, int index = -1 )</div></li>
<li><div class=fn>void <a href="#insertStrList-2"><b>insertStrList</b></a> ( const QStrList & list, int index = -1 )</div></li>
<li><div class=fn>void <a href="#insertStrList-3"><b>insertStrList</b></a> ( const char ** strings, int numStrings = -1, int index = -1 )</div></li>
<li><div class=fn>void <a href="#insertItem"><b>insertItem</b></a> ( const QListBoxItem * lbi, int index = -1 )</div></li>
<li><div class=fn>void <a href="#insertItem-2"><b>insertItem</b></a> ( const QListBoxItem * lbi, const QListBoxItem * after )</div></li>
<li><div class=fn>void <a href="#insertItem-3"><b>insertItem</b></a> ( const QString & text, int index = -1 )</div></li>
<li><div class=fn>void <a href="#insertItem-4"><b>insertItem</b></a> ( const QPixmap & pixmap, int index = -1 )</div></li>
<li><div class=fn>void <a href="#insertItem-5"><b>insertItem</b></a> ( const QPixmap & pixmap, const QString & text, int index = -1 )</div></li>
<li><div class=fn>void <a href="#removeItem"><b>removeItem</b></a> ( int index )</div></li>
<li><div class=fn>QString <a href="#text"><b>text</b></a> ( int index ) const</div></li>
<li><div class=fn>const QPixmap * <a href="#pixmap"><b>pixmap</b></a> ( int index ) const</div></li>
<li><div class=fn>void <a href="#changeItem"><b>changeItem</b></a> ( const QListBoxItem * lbi, int index )</div></li>
<li><div class=fn>void <a href="#changeItem-2"><b>changeItem</b></a> ( const QString & text, int index )</div></li>
<li><div class=fn>void <a href="#changeItem-3"><b>changeItem</b></a> ( const QPixmap & pixmap, int index )</div></li>
<li><div class=fn>void <a href="#changeItem-4"><b>changeItem</b></a> ( const QPixmap & pixmap, const QString & text, int index )</div></li>
<li><div class=fn>void <a href="#takeItem"><b>takeItem</b></a> ( const QListBoxItem * item )</div></li>
<li><div class=fn>int <a href="#numItemsVisible"><b>numItemsVisible</b></a> () const</div></li>
<li><div class=fn>int <a href="#currentItem"><b>currentItem</b></a> () const</div></li>
<li><div class=fn>QString <a href="#currentText"><b>currentText</b></a> () const</div></li>
<li><div class=fn>virtual void <a href="#setCurrentItem"><b>setCurrentItem</b></a> ( int index )</div></li>
<li><div class=fn>virtual void <a href="#setCurrentItem-2"><b>setCurrentItem</b></a> ( QListBoxItem * i )</div></li>
<li><div class=fn>void <a href="#centerCurrentItem"><b>centerCurrentItem</b></a> ()</div></li>
<li><div class=fn>int <a href="#topItem"><b>topItem</b></a> () const</div></li>
<li><div class=fn>virtual void <a href="#setTopItem"><b>setTopItem</b></a> ( int index )</div></li>
<li><div class=fn>virtual void <a href="#setBottomItem"><b>setBottomItem</b></a> ( int index )</div></li>
<li><div class=fn>long <a href="#maxItemWidth"><b>maxItemWidth</b></a> () const</div></li>
<li><div class=fn>enum <a href="#SelectionMode-enum"><b>SelectionMode</b></a> { Single, Multi, Extended, NoSelection }</div></li>
<li><div class=fn>virtual void <a href="#setSelectionMode"><b>setSelectionMode</b></a> ( SelectionMode )</div></li>
<li><div class=fn>SelectionMode <a href="#selectionMode"><b>selectionMode</b></a> () const</div></li>
<li><div class=fn>void setMultiSelection ( bool multi ) <em>(obsolete)</em></div></li>
<li><div class=fn>bool isMultiSelection () const <em>(obsolete)</em></div></li>
<li><div class=fn>virtual void <a href="#setSelected"><b>setSelected</b></a> ( QListBoxItem * item, bool select )</div></li>
<li><div class=fn>void <a href="#setSelected-2"><b>setSelected</b></a> ( int index, bool select )</div></li>
<li><div class=fn>bool <a href="#isSelected"><b>isSelected</b></a> ( int i ) const</div></li>
<li><div class=fn>bool <a href="#isSelected-2"><b>isSelected</b></a> ( const QListBoxItem * i ) const</div></li>
<li><div class=fn>QListBoxItem * <a href="#selectedItem"><b>selectedItem</b></a> () const</div></li>
<li><div class=fn>QListBoxItem * <a href="#item"><b>item</b></a> ( int index ) const</div></li>
<li><div class=fn>int <a href="#index"><b>index</b></a> ( const QListBoxItem * lbi ) const</div></li>
<li><div class=fn>QListBoxItem * <a href="#findItem"><b>findItem</b></a> ( const QString & text, ComparisonFlags compare = BeginsWith ) const</div></li>
<li><div class=fn>void <a href="#triggerUpdate"><b>triggerUpdate</b></a> ( bool doLayout )</div></li>
<li><div class=fn>bool <a href="#itemVisible"><b>itemVisible</b></a> ( int index )</div></li>
<li><div class=fn>bool <a href="#itemVisible-2"><b>itemVisible</b></a> ( const QListBoxItem * item )</div></li>
<li><div class=fn>enum <a href="#LayoutMode-enum"><b>LayoutMode</b></a> { FixedNumber, FitToWidth, FitToHeight = FitToWidth, Variable }</div></li>
<li><div class=fn>virtual void <a href="#setColumnMode"><b>setColumnMode</b></a> ( LayoutMode )</div></li>
<li><div class=fn>virtual void <a href="#setColumnMode-2"><b>setColumnMode</b></a> ( int columns )</div></li>
<li><div class=fn>virtual void <a href="#setRowMode"><b>setRowMode</b></a> ( LayoutMode )</div></li>
<li><div class=fn>virtual void <a href="#setRowMode-2"><b>setRowMode</b></a> ( int rows )</div></li>
<li><div class=fn>LayoutMode <a href="#columnMode"><b>columnMode</b></a> () const</div></li>
<li><div class=fn>LayoutMode <a href="#rowMode"><b>rowMode</b></a> () const</div></li>
<li><div class=fn>int <a href="#numColumns"><b>numColumns</b></a> () const</div></li>
<li><div class=fn>int <a href="#numRows"><b>numRows</b></a> () const</div></li>
<li><div class=fn>bool <a href="#variableWidth"><b>variableWidth</b></a> () const</div></li>
<li><div class=fn>virtual void <a href="#setVariableWidth"><b>setVariableWidth</b></a> ( bool )</div></li>
<li><div class=fn>bool <a href="#variableHeight"><b>variableHeight</b></a> () const</div></li>
<li><div class=fn>virtual void <a href="#setVariableHeight"><b>setVariableHeight</b></a> ( bool )</div></li>
<li><div class=fn>bool <a href="#autoScrollBar"><b>autoScrollBar</b></a> () const</div></li>
<li><div class=fn>void <a href="#setAutoScrollBar"><b>setAutoScrollBar</b></a> ( bool enable )</div></li>
<li><div class=fn>bool <a href="#scrollBar"><b>scrollBar</b></a> () const</div></li>
<li><div class=fn>void <a href="#setScrollBar"><b>setScrollBar</b></a> ( bool enable )</div></li>
<li><div class=fn>bool <a href="#autoBottomScrollBar"><b>autoBottomScrollBar</b></a> () const</div></li>
<li><div class=fn>void <a href="#setAutoBottomScrollBar"><b>setAutoBottomScrollBar</b></a> ( bool enable )</div></li>
<li><div class=fn>bool <a href="#bottomScrollBar"><b>bottomScrollBar</b></a> () const</div></li>
<li><div class=fn>void <a href="#setBottomScrollBar"><b>setBottomScrollBar</b></a> ( bool enable )</div></li>
<li><div class=fn>int inSort ( const QListBoxItem * lbi ) <em>(obsolete)</em></div></li>
<li><div class=fn>int inSort ( const QString & text ) <em>(obsolete)</em></div></li>
<li><div class=fn>int cellHeight ( int i ) const <em>(obsolete)</em></div></li>
<li><div class=fn>int cellHeight () const <em>(obsolete)</em></div></li>
<li><div class=fn>int cellWidth () const <em>(obsolete)</em></div></li>
<li><div class=fn>int numCols () const <em>(obsolete)</em></div></li>
<li><div class=fn>int <a href="#itemHeight"><b>itemHeight</b></a> ( int index = 0 ) const</div></li>
<li><div class=fn>QListBoxItem * <a href="#itemAt"><b>itemAt</b></a> ( const QPoint & p ) const</div></li>
<li><div class=fn>QRect <a href="#itemRect"><b>itemRect</b></a> ( QListBoxItem * item ) const</div></li>
<li><div class=fn>QListBoxItem * <a href="#firstItem"><b>firstItem</b></a> () const</div></li>
<li><div class=fn>void <a href="#sort"><b>sort</b></a> ( bool ascending = TRUE )</div></li>
</ul>
<h2>Public Slots</h2>
<ul>
<li><div class=fn>void <a href="#clear"><b>clear</b></a> ()</div></li>
<li><div class=fn>virtual void <a href="#ensureCurrentVisible"><b>ensureCurrentVisible</b></a> ()</div></li>
<li><div class=fn>virtual void <a href="#clearSelection"><b>clearSelection</b></a> ()</div></li>
<li><div class=fn>virtual void <a href="#selectAll"><b>selectAll</b></a> ( bool select )</div></li>
<li><div class=fn>virtual void <a href="#invertSelection"><b>invertSelection</b></a> ()</div></li>
</ul>
<h2>Signals</h2>
<ul>
<li><div class=fn>void <a href="#highlighted"><b>highlighted</b></a> ( int index )</div></li>
<li><div class=fn>void <a href="#selected"><b>selected</b></a> ( int index )</div></li>
<li><div class=fn>void <a href="#highlighted-2"><b>highlighted</b></a> ( const QString & )</div></li>
<li><div class=fn>void <a href="#selected-2"><b>selected</b></a> ( const QString & )</div></li>
<li><div class=fn>void <a href="#highlighted-3"><b>highlighted</b></a> ( QListBoxItem * )</div></li>
<li><div class=fn>void <a href="#selected-3"><b>selected</b></a> ( QListBoxItem * )</div></li>
<li><div class=fn>void <a href="#selectionChanged"><b>selectionChanged</b></a> ()</div></li>
<li><div class=fn>void <a href="#selectionChanged-2"><b>selectionChanged</b></a> ( QListBoxItem * item )</div></li>
<li><div class=fn>void <a href="#currentChanged"><b>currentChanged</b></a> ( QListBoxItem * item )</div></li>
<li><div class=fn>void <a href="#clicked"><b>clicked</b></a> ( QListBoxItem * item )</div></li>
<li><div class=fn>void <a href="#clicked-2"><b>clicked</b></a> ( QListBoxItem * item, const QPoint & pnt )</div></li>
<li><div class=fn>void <a href="#pressed"><b>pressed</b></a> ( QListBoxItem * item )</div></li>
<li><div class=fn>void <a href="#pressed-2"><b>pressed</b></a> ( QListBoxItem * item, const QPoint & pnt )</div></li>
<li><div class=fn>void <a href="#doubleClicked"><b>doubleClicked</b></a> ( QListBoxItem * item )</div></li>
<li><div class=fn>void <a href="#returnPressed"><b>returnPressed</b></a> ( QListBoxItem * )</div></li>
<li><div class=fn>void <a href="#rightButtonClicked"><b>rightButtonClicked</b></a> ( QListBoxItem *, const QPoint & )</div></li>
<li><div class=fn>void <a href="#rightButtonPressed"><b>rightButtonPressed</b></a> ( QListBoxItem *, const QPoint & )</div></li>
<li><div class=fn>void <a href="#mouseButtonPressed"><b>mouseButtonPressed</b></a> ( int button, QListBoxItem * item, const QPoint & pos )</div></li>
<li><div class=fn>void <a href="#mouseButtonClicked"><b>mouseButtonClicked</b></a> ( int button, QListBoxItem * item, const QPoint & pos )</div></li>
<li><div class=fn>void <a href="#contextMenuRequested"><b>contextMenuRequested</b></a> ( QListBoxItem * item, const QPoint & pos )</div></li>
<li><div class=fn>void <a href="#onItem"><b>onItem</b></a> ( QListBoxItem * i )</div></li>
<li><div class=fn>void <a href="#onViewport"><b>onViewport</b></a> ()</div></li>
</ul>
<h2>Properties</h2>
<ul>
<li><div class=fn>LayoutMode <a href="#columnMode-prop"><b>columnMode</b></a> - the column layout mode for this list box</div></li>
<li><div class=fn>uint <a href="#count-prop"><b>count</b></a> - the number of items in the list box <em>(read only)</em></div></li>
<li><div class=fn>int <a href="#currentItem-prop"><b>currentItem</b></a> - the current highlighted item</div></li>
<li><div class=fn>QString <a href="#currentText-prop"><b>currentText</b></a> - the text of the current item <em>(read only)</em></div></li>
<li><div class=fn>bool multiSelection - whether or not the list box is in Multi selection mode <em>(obsolete)</em></div></li>
<li><div class=fn>int <a href="#numColumns-prop"><b>numColumns</b></a> - the number of columns in the list box <em>(read only)</em></div></li>
<li><div class=fn>int <a href="#numItemsVisible-prop"><b>numItemsVisible</b></a> - the number of visible items <em>(read only)</em></div></li>
<li><div class=fn>int <a href="#numRows-prop"><b>numRows</b></a> - the number of rows in the list box <em>(read only)</em></div></li>
<li><div class=fn>LayoutMode <a href="#rowMode-prop"><b>rowMode</b></a> - the row layout mode for this list box</div></li>
<li><div class=fn>SelectionMode <a href="#selectionMode-prop"><b>selectionMode</b></a> - the selection mode of the list box</div></li>
<li><div class=fn>int <a href="#topItem-prop"><b>topItem</b></a> - the index of an item at the top of the screen</div></li>
<li><div class=fn>bool <a href="#variableHeight-prop"><b>variableHeight</b></a> - whether this list box has variable-height rows</div></li>
<li><div class=fn>bool <a href="#variableWidth-prop"><b>variableWidth</b></a> - whether this list box has variable-width columns</div></li>
</ul>
<h2>Protected Members</h2>
<ul>
<li><div class=fn>void <a href="#updateItem"><b>updateItem</b></a> ( int index )</div></li>
<li><div class=fn>void <a href="#updateItem-2"><b>updateItem</b></a> ( QListBoxItem * i )</div></li>
<li><div class=fn>int totalWidth () const <em>(obsolete)</em></div></li>
<li><div class=fn>int totalHeight () const <em>(obsolete)</em></div></li>
<li><div class=fn>virtual void <a href="#paintCell"><b>paintCell</b></a> ( QPainter * p, int row, int col )</div></li>
<li><div class=fn>void <a href="#toggleCurrentItem"><b>toggleCurrentItem</b></a> ()</div></li>
<li><div class=fn>bool <a href="#isRubberSelecting"><b>isRubberSelecting</b></a> () const</div></li>
<li><div class=fn>void <a href="#doLayout"><b>doLayout</b></a> () const</div></li>
<li><div class=fn>bool itemYPos ( int index, int * yPos ) const <em>(obsolete)</em></div></li>
<li><div class=fn>int findItem ( int yPos ) const <em>(obsolete)</em></div></li>
</ul>
<hr><a name="details"></a><h2>Detailed Description</h2>
The QListBox widget provides a list of selectable, read-only items.
<p>
<p> This is typically a single-column list in which zero or one item
is selected, but it can also be used in many other ways.
<p> QListBox will add scroll bars as necessary, but it isn't intended
for <em>really</em> big lists. If you want more than a few thousand
items, it's probably better to use a different widget mainly
because the scroll bars won't provide very good navigation, but
also because QListBox may become slow with huge lists. (See
<a href="qlistview.html">QListView</a> and <a href="qtable.html">QTable</a> for possible alternatives.)
<p> There are a variety of selection modes described in the
QListBox::SelectionMode documentation. The default is <a href="#SelectionMode-enum">Single</a>
selection mode, but you can change it using <a href="#setSelectionMode">setSelectionMode</a>().
(<a href="#setMultiSelection">setMultiSelection</a>() is still provided for compatibility with Qt
1.x. We recomment using setSelectionMode() in all code.)
<p> Because QListBox offers multiple selection it must display
<a href="focus.html#keyboard-focus">keyboard focus</a> and selection state separately. Therefore there are
functions both to set the selection state of an item, i.e.
<a href="#setSelected">setSelected</a>(), and to select which item displays keyboard focus,
i.e. <a href="#setCurrentItem">setCurrentItem</a>().
<p> The list box normally arranges its items in a single column and
adds a vertical scroll bar if required. It is possible to have a
different fixed number of columns (<a href="#setColumnMode">setColumnMode</a>()), or as many
columns as will fit in the list box's assigned screen space
(setColumnMode( FitToWidth )), or to have a fixed number of rows
(<a href="#setRowMode">setRowMode</a>()) or as many rows as will fit in the list box's
assigned screen space (setRowMode( FitToHeight )). In all these
cases QListBox will add scroll bars, as appropriate, in at least
one direction.
<p> If multiple rows are used, each row can be as high as necessary
(the normal setting), or you can request that all items will have
the same height by calling <a href="#setVariableHeight">setVariableHeight</a>( FALSE ). The same
applies to a column's width, see <a href="#setVariableWidth">setVariableWidth</a>().
<p> The items discussed are <a href="qlistboxitem.html">QListBoxItem</a> objects. QListBox provides
methods to insert new items as strings, as pixmaps, and as
QListBoxItem * (<a href="#insertItem">insertItem</a>() with various arguments), and to
replace an existing item with a new string, pixmap or QListBoxItem
(<a href="#changeItem">changeItem</a>() with various arguments). You can also remove items
singly with <a href="#removeItem">removeItem</a>() or <a href="#clear">clear</a>() the entire list box. Note that
if you create a QListBoxItem yourself and insert it, it becomes
the property of QListBox and you must not delete it. (QListBox
will delete it when appropriate.)
<p> You can also create a QListBoxItem, such as <a href="qlistboxtext.html">QListBoxText</a> or
<a href="qlistboxpixmap.html">QListBoxPixmap</a>, with the list box as first parameter. The item
will then append itself. When you delete an item it is
automatically removed from the list box.
<p> The list of items can be arbitrarily large; QListBox will add
scroll bars if necessary. QListBox can display a single-column
(the common case) or multiple-columns, and offers both single and
multiple selection. QListBox does not support multiple-column
items (but <a href="qlistview.html">QListView</a> and <a href="qtable.html">QTable</a> do), or tree hierarchies (but
QListView does).
<p> The list box items can be accessed both as <a href="qlistboxitem.html">QListBoxItem</a> objects
(recommended) and using integer indexes (the original QListBox
implementation used an array of strings internally, and the API
still supports this mode of operation). Everything can be done
using the new objects; most things can be done using the indexes,
too, but unfortunately not everything.
<p> Each item in a QListBox contains a QListBoxItem. One of the items
can be the current item. The <a href="#highlighted">highlighted</a>() signal is emitted when
a new item gets highlighted, e.g. because the user clicks on it or
<a href="#setCurrentItem">QListBox::setCurrentItem</a>() is called. The <a href="#selected">selected</a>() signal is
emitted when the user double-clicks on an item or presses Enter
when an item is highlighted.
<p> If the user does not select anything, no signals are emitted and
<a href="#currentItem">currentItem</a>() returns -1.
<p> A list box has <a href="qwidget.html#FocusPolicy-enum">WheelFocus</a> as a default <a href="qwidget.html#focusPolicy">focusPolicy</a>(), i.e. it
can get keyboard focus by tabbing, clicking and through the use of
the mouse wheel.
<p> New items can be inserted using <a href="#insertItem">insertItem</a>(), <a href="#insertStrList">insertStrList</a>() or
<a href="#insertStringList">insertStringList</a>(). <a href="#inSort">inSort</a>() is obsolete because this method is
quite inefficient. It's preferable to insert the items normally
and call <a href="#sort">sort</a>() afterwards, or to insert a sorted <a href="qstringlist.html">QStringList</a>().
<p> By default, vertical and horizontal scroll bars are added and
removed as necessary. <a href="qscrollview.html#setHScrollBarMode">setHScrollBarMode</a>() and <a href="qscrollview.html#setVScrollBarMode">setVScrollBarMode</a>()
can be used to change this policy.
<p> If you need to insert types other than strings and pixmaps, you
must define new classes which inherit <a href="qlistboxitem.html">QListBoxItem</a>.
<p> <b>Warning:</b> The list box assumes ownership of all list box items and
will delete them when it does not need them any more.
<p> <img src=qlistbox-m.png> <img src=qlistbox-w.png>
<p> <p>See also <a href="qlistview.html">QListView</a>, <a href="qcombobox.html">QComboBox</a>, <a href="qbuttongroup.html">QButtonGroup</a>, <a href="guibooks.html#fowler">GUI Design Handbook: List Box (two
sections)</a>, and <a href="advanced.html">Advanced Widgets</a>.
<hr><h2>Member Type Documentation</h2>
<h3 class=fn><a name="LayoutMode-enum"></a>QListBox::LayoutMode</h3>
<p> This enum type is used to specify how QListBox lays out its rows
and columns.
<ul>
<li><tt>QListBox::FixedNumber</tt> - There is a fixed number of rows (or columns).
<li><tt>QListBox::FitToWidth</tt> - There are as many columns as will fit
on-screen.
<li><tt>QListBox::FitToHeight</tt> - There are as many rows as will fit on-screen.
<li><tt>QListBox::Variable</tt> - There are as many rows as are required by the
column mode. (Or as many columns as required by the row mode.)
</ul><p> Example: When you call <a href="#setRowMode">setRowMode</a>( FitToHeight ), <a href="#columnMode">columnMode</a>()
automatically becomes <a href="#LayoutMode-enum">Variable</a> to accommodate the row mode
you've set.
<h3 class=fn><a name="SelectionMode-enum"></a>QListBox::SelectionMode</h3>
<p> This enumerated type is used by QListBox to indicate how it reacts
to selection by the user.
<ul>
<li><tt>QListBox::Single</tt> - When the user selects an item, any already-selected
item becomes unselected and the user cannot unselect the selected
item. This means that the user can never clear the selection, even
though the selection may be cleared by the application programmer
using <a href="#clearSelection">QListBox::clearSelection</a>().
<li><tt>QListBox::Multi</tt> - When the user selects an item the selection status
of that item is toggled and the other items are left alone.
<li><tt>QListBox::Extended</tt> - When the user selects an item the selection is
cleared and the new item selected. However, if the user presses
the Ctrl key when clicking on an item, the clicked item gets
toggled and all other items are left untouched. And if the user
presses the Shift key while clicking on an item, all items between
the current item and the clicked item get selected or unselected,
depending on the state of the clicked item. Also, multiple items
can be selected by dragging the mouse while the left mouse button
is kept pressed.
<li><tt>QListBox::NoSelection</tt> - Items cannot be selected.
</ul><p> In other words, <a href="#SelectionMode-enum">Single</a> is a real single-selection list box, <a href="#SelectionMode-enum">Multi</a> is a real multi-selection list box, <a href="#SelectionMode-enum">Extended</a> is a list
box in which users can select multiple items but usually want to
select either just one or a range of contiguous items, and <a href="#SelectionMode-enum">NoSelection</a> is for a list box where the user can look but not
touch.
<hr><h2>Member Function Documentation</h2>
<h3 class=fn><a name="QListBox"></a>QListBox::QListBox ( <a href="qwidget.html">QWidget</a> * parent = 0, const char * name = 0, WFlags f = 0 )
</h3>
Constructs a new empty list box called <em>name</em> and with parent <em>parent</em>.
<p> Performance is boosted by modifying the widget flags <em>f</em> so that
only part of the <a href="qlistboxitem.html">QListBoxItem</a> children is redrawn. This may be
unsuitable for custom QListBoxItem classes, in which case <a href="qt.html#WidgetFlags-enum">WStaticContents</a> and <a href="qt.html#WidgetFlags-enum">WRepaintNoErase</a> should be cleared
immediately after construction.
<p> <p>See also <a href="qwidget.html#clearWFlags">QWidget::clearWFlags</a>() and <a href="qt.html#WidgetFlags-enum">Qt::WidgetFlags</a>.
<h3 class=fn><a name="~QListBox"></a>QListBox::~QListBox ()
</h3>
Destroys the list box. Deletes all list box items.
<h3 class=fn>bool <a name="autoBottomScrollBar"></a>QListBox::autoBottomScrollBar () const
</h3>
<p> Returns TRUE if <a href="qscrollview.html#hScrollBarMode">hScrollBarMode</a>() is <a href="qscrollview.html#ScrollBarMode-enum">Auto</a>; otherwise returns
FALSE.
<h3 class=fn>bool <a name="autoScrollBar"></a>QListBox::autoScrollBar () const
</h3>
<p> Returns TRUE if <a href="qscrollview.html#vScrollBarMode">vScrollBarMode</a>() is <a href="qscrollview.html#ScrollBarMode-enum">Auto</a>; otherwise returns
FALSE.
<h3 class=fn>bool <a name="bottomScrollBar"></a>QListBox::bottomScrollBar () const
</h3>
<p> Returns FALSE if <a href="qscrollview.html#vScrollBarMode">vScrollBarMode</a>() is <a href="qscrollview.html#ScrollBarMode-enum">AlwaysOff</a>; otherwise
returns TRUE.
<h3 class=fn>int <a name="cellHeight"></a>QListBox::cellHeight ( int i ) const
</h3>
<b>This function is obsolete.</b> It is provided to keep old source working. We strongly advise against using it in new code.
<p>
Returns the item height of item <em>i</em>.
<p>See also <a href="#itemHeight">itemHeight</a>().
<h3 class=fn>int <a name="cellHeight-2"></a>QListBox::cellHeight () const
</h3>
<b>This function is obsolete.</b> It is provided to keep old source working. We strongly advise against using it in new code.
<p> This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> Returns the item height of the first item, item 0.
<p>See also <a href="#itemHeight">itemHeight</a>().
<h3 class=fn>int <a name="cellWidth"></a>QListBox::cellWidth () const
</h3>
<b>This function is obsolete.</b> It is provided to keep old source working. We strongly advise against using it in new code.
<p>
Returns the maximum item width.
<p>See also <a href="#maxItemWidth">maxItemWidth</a>().
<h3 class=fn>void <a name="centerCurrentItem"></a>QListBox::centerCurrentItem ()
</h3>
<p> If there is a current item, the list box is scrolled so that this
item is displayed centered.
<p> <p>See also <a href="#ensureCurrentVisible">QListBox::ensureCurrentVisible</a>().
<h3 class=fn>void <a name="changeItem"></a>QListBox::changeItem ( const <a href="qlistboxitem.html">QListBoxItem</a> * lbi, int index )
</h3>
Replaces the item at position <em>index</em> with <em>lbi</em>. If <em>index</em> is
negative or too large, <a href="#changeItem">changeItem</a>() does nothing.
<p> The item that has been changed will become selected.
<p> <p>See also <a href="#insertItem">insertItem</a>() and <a href="#removeItem">removeItem</a>().
<h3 class=fn>void <a name="changeItem-2"></a>QListBox::changeItem ( const <a href="qstring.html">QString</a> & text, int index )
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> Replaces the item at position <em>index</em> with a new list box text
item with text <em>text</em>.
<p> The operation is ignored if <em>index</em> is out of range.
<p> <p>See also <a href="#insertItem">insertItem</a>() and <a href="#removeItem">removeItem</a>().
<h3 class=fn>void <a name="changeItem-3"></a>QListBox::changeItem ( const <a href="qpixmap.html">QPixmap</a> & pixmap, int index )
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> Replaces the item at position <em>index</em> with a new list box pixmap
item with pixmap <em>pixmap</em>.
<p> The operation is ignored if <em>index</em> is out of range.
<p> <p>See also <a href="#insertItem">insertItem</a>() and <a href="#removeItem">removeItem</a>().
<h3 class=fn>void <a name="changeItem-4"></a>QListBox::changeItem ( const <a href="qpixmap.html">QPixmap</a> & pixmap, const <a href="qstring.html">QString</a> & text, int index )
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> Replaces the item at position <em>index</em> with a new list box pixmap
item with pixmap <em>pixmap</em> and text <em>text</em>.
<p> The operation is ignored if <em>index</em> is out of range.
<p> <p>See also <a href="#insertItem">insertItem</a>() and <a href="#removeItem">removeItem</a>().
<h3 class=fn>void <a name="clear"></a>QListBox::clear ()<tt> [slot]</tt>
</h3>
Deletes all the items in the list.
<p> <p>See also <a href="#removeItem">removeItem</a>().
<h3 class=fn>void <a name="clearSelection"></a>QListBox::clearSelection ()<tt> [virtual slot]</tt>
</h3>
Deselects all items, if possible.
<p> Note that a <a href="#SelectionMode-enum">Single</a> selection list box will automatically select
an item if it has <a href="focus.html#keyboard-focus">keyboard focus</a>.
<p>Example: <a href="listbox-example.html#x1275">listbox/listbox.cpp</a>.
<h3 class=fn>void <a name="clicked"></a>QListBox::clicked ( <a href="qlistboxitem.html">QListBoxItem</a> * item )<tt> [signal]</tt>
</h3>
<p> This signal is emitted when the user clicks any mouse button. If
<em>item</em> is not 0, the cursor is on <em>item</em>. If <em>item</em> is 0, the
mouse cursor isn't on any item.
<p> Note that you must not delete any <a href="qlistboxitem.html">QListBoxItem</a> objects in slots
connected to this signal.
<h3 class=fn>void <a name="clicked-2"></a>QListBox::clicked ( <a href="qlistboxitem.html">QListBoxItem</a> * item, const <a href="qpoint.html">QPoint</a> & pnt )<tt> [signal]</tt>
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> This signal is emitted when the user clicks any mouse button. If
<em>item</em> is not 0, the cursor is on <em>item</em>. If <em>item</em> is 0, the
mouse cursor isn't on any item.
<p> <em>pnt</em> is the position of the mouse cursor in the global
coordinate system (<a href="qmouseevent.html#globalPos">QMouseEvent::globalPos</a>()). (If the click's
press and release differs by a pixel or two, <em>pnt</em> is the
position at release time.)
<p> Note that you must not delete any <a href="qlistboxitem.html">QListBoxItem</a> objects in slots
connected to this signal.
<h3 class=fn><a href="qlistbox.html#LayoutMode-enum">LayoutMode</a> <a name="columnMode"></a>QListBox::columnMode () const
</h3><p>Returns the column layout mode for this list box.
See the <a href="qlistbox.html#columnMode-prop">"columnMode"</a> property for details.
<h3 class=fn>void <a name="contextMenuRequested"></a>QListBox::contextMenuRequested ( <a href="qlistboxitem.html">QListBoxItem</a> * item, const <a href="qpoint.html">QPoint</a> & pos )<tt> [signal]</tt>
</h3>
<p> This signal is emitted when the user invokes a context menu with
the right mouse button or with special system keys, with <em>item</em>
being the item under the mouse cursor or the current item,
respectively.
<p> <em>pos</em> is the position for the context menu in the global
coordinate system.
<h3 class=fn>uint <a name="count"></a>QListBox::count () const
</h3><p>Returns the number of items in the list box.
See the <a href="qlistbox.html#count-prop">"count"</a> property for details.
<h3 class=fn>void <a name="currentChanged"></a>QListBox::currentChanged ( <a href="qlistboxitem.html">QListBoxItem</a> * item )<tt> [signal]</tt>
</h3>
<p> This signal is emitted when the user highlights a new current
item. <em>item</em> is the new current list box item.
<p> <p>See also <a href="#currentItem-prop">currentItem</a> and <a href="#currentItem-prop">currentItem</a>.
<h3 class=fn>int <a name="currentItem"></a>QListBox::currentItem () const
</h3><p>Returns the current highlighted item.
See the <a href="qlistbox.html#currentItem-prop">"currentItem"</a> property for details.
<h3 class=fn><a href="qstring.html">QString</a> <a name="currentText"></a>QListBox::currentText () const
</h3><p>Returns the text of the current item.
See the <a href="qlistbox.html#currentText-prop">"currentText"</a> property for details.
<h3 class=fn>void <a name="doLayout"></a>QListBox::doLayout () const<tt> [protected]</tt>
</h3>
This function does the hard layout work. You should never need to
call it.
<h3 class=fn>void <a name="doubleClicked"></a>QListBox::doubleClicked ( <a href="qlistboxitem.html">QListBoxItem</a> * item )<tt> [signal]</tt>
</h3>
<p> This signal is emitted whenever an item is double-clicked. It's
emitted on the second button press, not the second button release.
If <em>item</em> is not 0, the cursor is on <em>item</em>. If <em>item</em> is 0,
the mouse cursor isn't on any item.
<h3 class=fn>void <a name="ensureCurrentVisible"></a>QListBox::ensureCurrentVisible ()<tt> [virtual slot]</tt>
</h3>
Ensures that the current item is visible.
<h3 class=fn><a href="qlistboxitem.html">QListBoxItem</a> * <a name="findItem"></a>QListBox::findItem ( const <a href="qstring.html">QString</a> & text, ComparisonFlags compare = BeginsWith ) const
</h3>
Finds the first list box item that has the text <em>text</em> and
returns it, or returns 0 of no such item could be found. If
<tt>ComparisonFlags</tt> are specified in <em>compare</em> then these flags
are used, otherwise the default is a case-insensitive, "begins
with" search.
<p> <p>See also <a href="qt.html#StringComparisonMode-enum">Qt::StringComparisonMode</a>.
<h3 class=fn>int <a name="findItem-2"></a>QListBox::findItem ( int yPos ) const<tt> [protected]</tt>
</h3>
<b>This function is obsolete.</b> It is provided to keep old source working. We strongly advise against using it in new code.
<p>
Returns the index of the item a point (0, <em>yPos</em>).
<p>See also <a href="#index">index</a>() and <a href="#itemAt">itemAt</a>().
<h3 class=fn><a href="qlistboxitem.html">QListBoxItem</a> * <a name="firstItem"></a>QListBox::firstItem () const
</h3>
Returns the first item in this list box. If the list box is empty,
returns 0.
<h3 class=fn>void <a name="highlighted"></a>QListBox::highlighted ( int index )<tt> [signal]</tt>
</h3>
<p> This signal is emitted when the user highlights a new current
item. <em>index</em> is the index of the highlighted item.
<p> <p>See also <a href="#selected">selected</a>(), <a href="#currentItem-prop">currentItem</a>, and <a href="#selectionChanged">selectionChanged</a>().
<h3 class=fn>void <a name="highlighted-2"></a>QListBox::highlighted ( const <a href="qstring.html">QString</a> & )<tt> [signal]</tt>
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> This signal is emitted when the user highlights a new current item
and the new item is a string. The argument is the text of the new
current item.
<p> <p>See also <a href="#selected">selected</a>(), <a href="#currentItem-prop">currentItem</a>, and <a href="#selectionChanged">selectionChanged</a>().
<h3 class=fn>void <a name="highlighted-3"></a>QListBox::highlighted ( <a href="qlistboxitem.html">QListBoxItem</a> * )<tt> [signal]</tt>
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> This signal is emitted when the user highlights a new current
item. The argument is a pointer to the new current item.
<p> <p>See also <a href="#selected">selected</a>(), <a href="#currentItem-prop">currentItem</a>, and <a href="#selectionChanged">selectionChanged</a>().
<h3 class=fn>int <a name="inSort"></a>QListBox::inSort ( const <a href="qlistboxitem.html">QListBoxItem</a> * lbi )
</h3>
<b>This function is obsolete.</b> It is provided to keep old source working. We strongly advise against using it in new code.
<p> Using this method is quite inefficient. We suggest to use <a href="#insertItem">insertItem</a>()
for inserting and <a href="#sort">sort</a>() afterwards.
<p> Inserts <em>lbi</em> at its sorted position in the list box and returns the
position.
<p> All items must be inserted with <a href="#inSort">inSort</a>() to maintain the sorting
order. inSort() treats any pixmap (or user-defined type) as
lexicographically less than any string.
<p> <p>See also <a href="#insertItem">insertItem</a>() and <a href="#sort">sort</a>().
<h3 class=fn>int <a name="inSort-2"></a>QListBox::inSort ( const <a href="qstring.html">QString</a> & text )
</h3>
<b>This function is obsolete.</b> It is provided to keep old source working. We strongly advise against using it in new code.
<p> This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> Using this method is quite inefficient. We suggest to use <a href="#insertItem">insertItem</a>()
for inserting and <a href="#sort">sort</a>() afterwards.
<p> Inserts a new item of <em>text</em> at its sorted position in the list box and
returns the position.
<p> All items must be inserted with <a href="#inSort">inSort</a>() to maintain the sorting
order. inSort() treats any pixmap (or user-defined type) as
lexicographically less than any string.
<p> <p>See also <a href="#insertItem">insertItem</a>() and <a href="#sort">sort</a>().
<h3 class=fn>int <a name="index"></a>QListBox::index ( const <a href="qlistboxitem.html">QListBoxItem</a> * lbi ) const
</h3>
Returns the index of <em>lbi</em>, or -1 if the item is not in this list
box or <em>lbi</em> is 0.
<p> <p>See also <a href="#item">item</a>().
<h3 class=fn>void <a name="insertItem"></a>QListBox::insertItem ( const <a href="qlistboxitem.html">QListBoxItem</a> * lbi, int index = -1 )
</h3>
Inserts the item <em>lbi</em> into the list at position <em>index</em>.
<p> If <em>index</em> is negative or larger than the number of items in the
list box, <em>lbi</em> is inserted at the end of the list.
<p> <p>See also <a href="#insertStrList">insertStrList</a>().
<p>Examples: <a href="i18n-example.html#x1886">i18n/mywidget.cpp</a>, <a href="listbox-example.html#x1276">listbox/listbox.cpp</a>, <a href="listboxcombo-example.html#x1249">listboxcombo/listboxcombo.cpp</a>, and <a href="tabdialog-example.html#x36">tabdialog/tabdialog.cpp</a>.
<h3 class=fn>void <a name="insertItem-2"></a>QListBox::insertItem ( const <a href="qlistboxitem.html">QListBoxItem</a> * lbi, const <a href="qlistboxitem.html">QListBoxItem</a> * after )
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> Inserts the item <em>lbi</em> into the list after the item <em>after</em>, or
at the beginning if <em>after</em> is 0.
<p> <p>See also <a href="#insertStrList">insertStrList</a>().
<h3 class=fn>void <a name="insertItem-3"></a>QListBox::insertItem ( const <a href="qstring.html">QString</a> & text, int index = -1 )
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> Inserts a new list box text item with the text <em>text</em> into the
list at position <em>index</em>.
<p> If <em>index</em> is negative, <em>text</em> is inserted at the end of the
list.
<p> <p>See also <a href="#insertStrList">insertStrList</a>().
<h3 class=fn>void <a name="insertItem-4"></a>QListBox::insertItem ( const <a href="qpixmap.html">QPixmap</a> & pixmap, int index = -1 )
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> Inserts a new list box pixmap item with the pixmap <em>pixmap</em> into
the list at position <em>index</em>.
<p> If <em>index</em> is negative, <em>pixmap</em> is inserted at the end of the
list.
<p> <p>See also <a href="#insertStrList">insertStrList</a>().
<h3 class=fn>void <a name="insertItem-5"></a>QListBox::insertItem ( const <a href="qpixmap.html">QPixmap</a> & pixmap, const <a href="qstring.html">QString</a> & text, int index = -1 )
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> Inserts a new list box pixmap item with the pixmap <em>pixmap</em> and
the text <em>text</em> into the list at position <em>index</em>.
<p> If <em>index</em> is negative, <em>pixmap</em> is inserted at the end of the
list.
<p> <p>See also <a href="#insertStrList">insertStrList</a>().
<h3 class=fn>void <a name="insertStrList"></a>QListBox::insertStrList ( const <a href="qstrlist.html">QStrList</a> * list, int index = -1 )
</h3>
Inserts the string list <em>list</em> into the list at position <em>index</em>.
<p> If <em>index</em> is negative, <em>list</em> is inserted at the end of the
list. If <em>index</em> is too large, the operation is ignored.
<p> <b>Warning:</b> This function uses <tt>const char *</tt> rather than <a href="qstring.html">QString</a>,
so we recommend against using it. It is provided so that legacy
code will continue to work, and so that programs that certainly
will not need to handle code outside a single 8-bit locale can use
it. See <a href="#insertStringList">insertStringList</a>() which uses real QStrings.
<p> <b>Warning:</b> This function is never significantly faster than a loop
around <a href="#insertItem">insertItem</a>().
<p> <p>See also <a href="#insertItem">insertItem</a>() and <a href="#insertStringList">insertStringList</a>().
<h3 class=fn>void <a name="insertStrList-2"></a>QListBox::insertStrList ( const <a href="qstrlist.html">QStrList</a> & list, int index = -1 )
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> Inserts the string list <em>list</em> into the list at position <em>index</em>.
<p> If <em>index</em> is negative, <em>list</em> is inserted at the end of the
list. If <em>index</em> is too large, the operation is ignored.
<p> <b>Warning:</b> This function uses <tt>const char *</tt> rather than <a href="qstring.html">QString</a>,
so we recommend against using it. It is provided so that legacy
code will continue to work, and so that programs that certainly
will not need to handle code outside a single 8-bit locale can use
it. See <a href="#insertStringList">insertStringList</a>() which uses real QStrings.
<p> <b>Warning:</b> This function is never significantly faster than a loop
around <a href="#insertItem">insertItem</a>().
<p> <p>See also <a href="#insertItem">insertItem</a>() and <a href="#insertStringList">insertStringList</a>().
<h3 class=fn>void <a name="insertStrList-3"></a>QListBox::insertStrList ( const char ** strings, int numStrings = -1, int index = -1 )
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> Inserts the <em>numStrings</em> strings of the array <em>strings</em> into the
list at position <em>index</em>.
<p> If <em>index</em> is negative, <a href="#insertStrList">insertStrList</a>() inserts <em>strings</em> at the
end of the list. If <em>index</em> is too large, the operation is
ignored.
<p> <b>Warning:</b> This function uses <tt>const char *</tt> rather than <a href="qstring.html">QString</a>,
so we recommend against using it. It is provided so that legacy
code will continue to work, and so that programs that certainly
will not need to handle code outside a single 8-bit locale can use
it. See <a href="#insertStringList">insertStringList</a>() which uses real QStrings.
<p> <b>Warning:</b> This function is never significantly faster than a loop
around <a href="#insertItem">insertItem</a>().
<p> <p>See also <a href="#insertItem">insertItem</a>() and <a href="#insertStringList">insertStringList</a>().
<h3 class=fn>void <a name="insertStringList"></a>QListBox::insertStringList ( const <a href="qstringlist.html">QStringList</a> & list, int index = -1 )
</h3>
Inserts the string list <em>list</em> into the list at position <em>index</em>.
<p> If <em>index</em> is negative, <em>list</em> is inserted at the end of the
list. If <em>index</em> is too large, the operation is ignored.
<p> <b>Warning:</b> This function is never significantly faster than a loop
around <a href="#insertItem">insertItem</a>().
<p> <p>See also <a href="#insertItem">insertItem</a>() and <a href="#insertStrList">insertStrList</a>().
<h3 class=fn>void <a name="invertSelection"></a>QListBox::invertSelection ()<tt> [virtual slot]</tt>
</h3>
Inverts the selection. Only works in <a href="#SelectionMode-enum">Multi</a> and <a href="#SelectionMode-enum">Extended</a>
selection mode.
<h3 class=fn>bool <a name="isMultiSelection"></a>QListBox::isMultiSelection () const
</h3><p>Returns TRUE if or not the list box is in Multi selection mode; otherwise returns FALSE.
See the <a href="qlistbox.html#multiSelection-prop">"multiSelection"</a> property for details.
<h3 class=fn>bool <a name="isRubberSelecting"></a>QListBox::isRubberSelecting () const<tt> [protected]</tt>
</h3>
Returns TRUE if the user is selecting items using a rubber band
rectangle; otherwise returns FALSE.
<h3 class=fn>bool <a name="isSelected"></a>QListBox::isSelected ( int i ) const
</h3>
Returns TRUE if item <em>i</em> is selected; otherwise returns FALSE.
<h3 class=fn>bool <a name="isSelected-2"></a>QListBox::isSelected ( const <a href="qlistboxitem.html">QListBoxItem</a> * i ) const
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> Returns TRUE if item <em>i</em> is selected; otherwise returns FALSE.
<h3 class=fn><a href="qlistboxitem.html">QListBoxItem</a> * <a name="item"></a>QListBox::item ( int index ) const
</h3>
Returns a pointer to the item at position <em>index</em>, or 0 if <em>index</em> is out of bounds.
<p> <p>See also <a href="#index">index</a>().
<p>Example: <a href="listboxcombo-example.html#x1250">listboxcombo/listboxcombo.cpp</a>.
<h3 class=fn><a href="qlistboxitem.html">QListBoxItem</a> * <a name="itemAt"></a>QListBox::itemAt ( const <a href="qpoint.html">QPoint</a> & p ) const
</h3>
Returns the item at point <em>p</em>, which is in on-screen coordinates,
or a 0 if there is no item at <em>p</em>.
<h3 class=fn>int <a name="itemHeight"></a>QListBox::itemHeight ( int index = 0 ) const
</h3>
Returns the height in pixels of the item with index <em>index</em>. <em>index</em> defaults to 0.
<p> If <em>index</em> is too large, this function returns 0.
<h3 class=fn><a href="qrect.html">QRect</a> <a name="itemRect"></a>QListBox::itemRect ( <a href="qlistboxitem.html">QListBoxItem</a> * item ) const
</h3>
Returns the rectangle on the screen that <em>item</em> occupies in
<a href="qscrollview.html#viewport">viewport</a>()'s coordinates, or an invalid rectangle if <em>item</em> is 0
or is not currently visible.
<h3 class=fn>bool <a name="itemVisible"></a>QListBox::itemVisible ( int index )
</h3>
Returns TRUE if the item at position <em>index</em> is at least partly
visible; otherwise returns FALSE.
<h3 class=fn>bool <a name="itemVisible-2"></a>QListBox::itemVisible ( const <a href="qlistboxitem.html">QListBoxItem</a> * item )
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> Returns TRUE if <em>item</em> is at least partly visible; otherwise
returns FALSE.
<h3 class=fn>bool <a name="itemYPos"></a>QListBox::itemYPos ( int index, int * yPos ) const<tt> [protected]</tt>
</h3>
<b>This function is obsolete.</b> It is provided to keep old source working. We strongly advise against using it in new code.
<p> Returns the vertical pixel-coordinate in <em>*yPos</em>, of the list box
item at position <em>index</em> in the list. Returns FALSE if the item is
outside the visible area.
<h3 class=fn>long <a name="maxItemWidth"></a>QListBox::maxItemWidth () const
</h3>
Returns the width of the widest item in the list box.
<h3 class=fn>void <a name="mouseButtonClicked"></a>QListBox::mouseButtonClicked ( int button, <a href="qlistboxitem.html">QListBoxItem</a> * item, const <a href="qpoint.html">QPoint</a> & pos )<tt> [signal]</tt>
</h3>
<p> This signal is emitted when the user clicks mouse button <em>button</em>. If <em>item</em> is not 0, the cursor is on <em>item</em>. If <em>item</em>
is 0, the mouse cursor isn't on any item.
<p> <em>pos</em> is the position of the mouse cursor in the global
coordinate system (<a href="qmouseevent.html#globalPos">QMouseEvent::globalPos</a>()). (If the click's
press and release differs by a pixel or two, <em>pos</em> is the
position at release time.)
<p> Note that you must not delete any <a href="qlistboxitem.html">QListBoxItem</a> objects in slots
connected to this signal.
<h3 class=fn>void <a name="mouseButtonPressed"></a>QListBox::mouseButtonPressed ( int button, <a href="qlistboxitem.html">QListBoxItem</a> * item, const <a href="qpoint.html">QPoint</a> & pos )<tt> [signal]</tt>
</h3>
<p> This signal is emitted when the user presses mouse button <em>button</em>. If <em>item</em> is not 0, the cursor is on <em>item</em>. If <em>item</em>
is 0, the mouse cursor isn't on any item.
<p> <em>pos</em> is the position of the mouse cursor in the global
coordinate system (<a href="qmouseevent.html#globalPos">QMouseEvent::globalPos</a>()).
<p> Note that you must not delete any <a href="qlistboxitem.html">QListBoxItem</a> objects in slots
connected to this signal.
<h3 class=fn>int <a name="numCols"></a>QListBox::numCols () const
</h3>
<b>This function is obsolete.</b> It is provided to keep old source working. We strongly advise against using it in new code.
<p>
Returns the number of columns.
<p>See also <a href="#numColumns-prop">numColumns</a>.
<h3 class=fn>int <a name="numColumns"></a>QListBox::numColumns () const
</h3><p>Returns the number of columns in the list box.
See the <a href="qlistbox.html#numColumns-prop">"numColumns"</a> property for details.
<h3 class=fn>int <a name="numItemsVisible"></a>QListBox::numItemsVisible () const
</h3><p>Returns the number of visible items.
See the <a href="qlistbox.html#numItemsVisible-prop">"numItemsVisible"</a> property for details.
<h3 class=fn>int <a name="numRows"></a>QListBox::numRows () const
</h3><p>Returns the number of rows in the list box.
See the <a href="qlistbox.html#numRows-prop">"numRows"</a> property for details.
<h3 class=fn>void <a name="onItem"></a>QListBox::onItem ( <a href="qlistboxitem.html">QListBoxItem</a> * i )<tt> [signal]</tt>
</h3>
<p> This signal is emitted when the user moves the mouse cursor onto
an item, similar to the <a href="qwidget.html#enterEvent">QWidget::enterEvent</a>() function. <em>i</em> is
the <a href="qlistboxitem.html">QListBoxItem</a> that the mouse has moved on.
<h3 class=fn>void <a name="onViewport"></a>QListBox::onViewport ()<tt> [signal]</tt>
</h3>
<p> This signal is emitted when the user moves the mouse cursor from
an item to an empty part of the list box.
<h3 class=fn>void <a name="paintCell"></a>QListBox::paintCell ( <a href="qpainter.html">QPainter</a> * p, int row, int col )<tt> [virtual protected]</tt>
</h3>
Provided for compatibility with the old QListBox. We recommend
using <a href="qlistboxitem.html#paint">QListBoxItem::paint</a>() instead.
<p> Repaints the cell at <em>row</em>, <em>col</em> using painter <em>p</em>.
<h3 class=fn>const <a href="qpixmap.html">QPixmap</a> * <a name="pixmap"></a>QListBox::pixmap ( int index ) const
</h3>
Returns a pointer to the pixmap at position <em>index</em>, or 0 if
there is no pixmap there.
<p> <p>See also <a href="#text">text</a>().
<h3 class=fn>void <a name="pressed"></a>QListBox::pressed ( <a href="qlistboxitem.html">QListBoxItem</a> * item )<tt> [signal]</tt>
</h3>
<p> This signal is emitted when the user presses any mouse button. If
<em>item</em> is not 0, the cursor is on <em>item</em>. If <em>item</em> is 0, the
mouse cursor isn't on any item.
<p> Note that you must not delete any <a href="qlistboxitem.html">QListBoxItem</a> objects in slots
connected to this signal.
<h3 class=fn>void <a name="pressed-2"></a>QListBox::pressed ( <a href="qlistboxitem.html">QListBoxItem</a> * item, const <a href="qpoint.html">QPoint</a> & pnt )<tt> [signal]</tt>
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> This signal is emitted when the user presses any mouse button. If
<em>item</em> is not 0, the cursor is on <em>item</em>. If <em>item</em> is 0, the
mouse cursor isn't on any item.
<p> <em>pnt</em> is the position of the mouse cursor in the global
coordinate system (<a href="qmouseevent.html#globalPos">QMouseEvent::globalPos</a>()).
<p> Note that you must not delete any <a href="qlistboxitem.html">QListBoxItem</a> objects in slots
connected to this signal.
<p> <p>See also <a href="#mouseButtonPressed">mouseButtonPressed</a>(), <a href="#rightButtonPressed">rightButtonPressed</a>(), and <a href="#clicked">clicked</a>().
<h3 class=fn>void <a name="removeItem"></a>QListBox::removeItem ( int index )
</h3>
Removes and deletes the item at position <em>index</em>. If <em>index</em> is
equal to <a href="#currentItem">currentItem</a>(), a new item gets highlighted and the
<a href="#highlighted">highlighted</a>() signal is emitted.
<p> <p>See also <a href="#insertItem">insertItem</a>() and <a href="#clear">clear</a>().
<h3 class=fn>void <a name="returnPressed"></a>QListBox::returnPressed ( <a href="qlistboxitem.html">QListBoxItem</a> * )<tt> [signal]</tt>
</h3>
<p> This signal is emitted when Enter or Return is pressed. The
argument is <a href="#currentItem">currentItem</a>().
<h3 class=fn>void <a name="rightButtonClicked"></a>QListBox::rightButtonClicked ( <a href="qlistboxitem.html">QListBoxItem</a> *, const <a href="qpoint.html">QPoint</a> & )<tt> [signal]</tt>
</h3>
<p> This signal is emitted when the right button is clicked (i.e. when
it's released at the same point where it was pressed). The
arguments are the relevant <a href="qlistboxitem.html">QListBoxItem</a> (may be 0) and the point
in global coordinates.
<h3 class=fn>void <a name="rightButtonPressed"></a>QListBox::rightButtonPressed ( <a href="qlistboxitem.html">QListBoxItem</a> *, const <a href="qpoint.html">QPoint</a> & )<tt> [signal]</tt>
</h3>
<p> This signal is emitted when the right button is pressed. The
arguments are the relevant <a href="qlistboxitem.html">QListBoxItem</a> (may be 0) and the point
in global coordinates.
<h3 class=fn><a href="qlistbox.html#LayoutMode-enum">LayoutMode</a> <a name="rowMode"></a>QListBox::rowMode () const
</h3><p>Returns the row layout mode for this list box.
See the <a href="qlistbox.html#rowMode-prop">"rowMode"</a> property for details.
<h3 class=fn>bool <a name="scrollBar"></a>QListBox::scrollBar () const
</h3>
<p> Returns FALSE if <a href="qscrollview.html#vScrollBarMode">vScrollBarMode</a>() is <a href="qscrollview.html#ScrollBarMode-enum">AlwaysOff</a>; otherwise
returns TRUE.
<h3 class=fn>void <a name="selectAll"></a>QListBox::selectAll ( bool select )<tt> [virtual slot]</tt>
</h3>
In <a href="#SelectionMode-enum">Multi</a> and <a href="#SelectionMode-enum">Extended</a> modes, this function sets all items to
be selected if <em>select</em> is TRUE, and to be unselected if <em>select</em> is FALSE.
<p> In <a href="#SelectionMode-enum">Single</a> and <a href="#SelectionMode-enum">NoSelection</a> modes, this function only changes
the selection status of <a href="#currentItem">currentItem</a>().
<h3 class=fn>void <a name="selected"></a>QListBox::selected ( int index )<tt> [signal]</tt>
</h3>
<p> This signal is emitted when the user double-clicks on an item or
presses Enter when an item is highlighted. <em>index</em> is the index
of the selected item.
<p> <p>See also <a href="#highlighted">highlighted</a>() and <a href="#selectionChanged">selectionChanged</a>().
<h3 class=fn>void <a name="selected-2"></a>QListBox::selected ( const <a href="qstring.html">QString</a> & )<tt> [signal]</tt>
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> This signal is emitted when the user double-clicks on an item or
presses Enter while an item is highlighted, and the selected item
is (or has) a string. The argument is the text of the selected
item.
<p> <p>See also <a href="#highlighted">highlighted</a>() and <a href="#selectionChanged">selectionChanged</a>().
<h3 class=fn>void <a name="selected-3"></a>QListBox::selected ( <a href="qlistboxitem.html">QListBoxItem</a> * )<tt> [signal]</tt>
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> This signal is emitted when the user double-clicks on an item or
presses Enter when an item is highlighted. The argument is a
pointer to the new selected item.
<p> <p>See also <a href="#highlighted">highlighted</a>() and <a href="#selectionChanged">selectionChanged</a>().
<h3 class=fn><a href="qlistboxitem.html">QListBoxItem</a> * <a name="selectedItem"></a>QListBox::selectedItem () const
</h3> Returns the selected item if the list box is in
single-selection mode and an item is selected.
<p> If no items are selected or the list box is in another selection mode
this function returns 0.
<p> <p>See also <a href="#setSelected">setSelected</a>() and <a href="#multiSelection-prop">multiSelection</a>.
<h3 class=fn>void <a name="selectionChanged"></a>QListBox::selectionChanged ()<tt> [signal]</tt>
</h3>
<p> This signal is emitted when the selection set of a list box
changes. This signal is emitted in each selection mode. If the
user selects five items by drag-selecting, QListBox tries to emit
just one <a href="#selectionChanged">selectionChanged</a>() signal so the signal can be connected
to computationally expensive slots.
<p> <p>See also <a href="#selected">selected</a>() and <a href="#currentItem-prop">currentItem</a>.
<h3 class=fn>void <a name="selectionChanged-2"></a>QListBox::selectionChanged ( <a href="qlistboxitem.html">QListBoxItem</a> * item )<tt> [signal]</tt>
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> This signal is emitted when the selection in a <a href="#SelectionMode-enum">Single</a> selection
list box changes. <em>item</em> is the newly selected list box item.
<p> <p>See also <a href="#selected">selected</a>() and <a href="#currentItem-prop">currentItem</a>.
<h3 class=fn><a href="qlistbox.html#SelectionMode-enum">SelectionMode</a> <a name="selectionMode"></a>QListBox::selectionMode () const
</h3><p>Returns the selection mode of the list box.
See the <a href="qlistbox.html#selectionMode-prop">"selectionMode"</a> property for details.
<h3 class=fn>void <a name="setAutoBottomScrollBar"></a>QListBox::setAutoBottomScrollBar ( bool enable )
</h3>
<p> If <em>enable</em> is TRUE sets <a href="qscrollview.html#setHScrollBarMode">setHScrollBarMode</a>() to <a href="qscrollview.html#ScrollBarMode-enum">AlwaysOn</a>;
otherwise sets setHScrollBarMode() to <a href="qscrollview.html#ScrollBarMode-enum">AlwaysOff</a>.
<h3 class=fn>void <a name="setAutoScrollBar"></a>QListBox::setAutoScrollBar ( bool enable )
</h3>
<p> If <em>enable</em> is TRUE sets <a href="qscrollview.html#setVScrollBarMode">setVScrollBarMode</a>() to <a href="qscrollview.html#ScrollBarMode-enum">AlwaysOn</a>;
otherwise sets setVScrollBarMode() to <a href="qscrollview.html#ScrollBarMode-enum">AlwaysOff</a>.
<h3 class=fn>void <a name="setBottomItem"></a>QListBox::setBottomItem ( int index )<tt> [virtual]</tt>
</h3>
Scrolls the list box so the item at position <em>index</em> in the list
is displayed in the bottom row of the list box.
<p> <p>See also <a href="#topItem-prop">topItem</a>.
<h3 class=fn>void <a name="setBottomScrollBar"></a>QListBox::setBottomScrollBar ( bool enable )
</h3>
<p> If <em>enable</em> is TRUE sets <a href="qscrollview.html#setHScrollBarMode">setHScrollBarMode</a>() to <a href="qscrollview.html#ScrollBarMode-enum">AlwaysOn</a>;
otherwise sets setHScrollBarMode() to <a href="qscrollview.html#ScrollBarMode-enum">AlwaysOff</a>.
<h3 class=fn>void <a name="setColumnMode"></a>QListBox::setColumnMode ( <a href="qlistbox.html#LayoutMode-enum">LayoutMode</a> )<tt> [virtual]</tt>
</h3><p>Sets the column layout mode for this list box.
See the <a href="qlistbox.html#columnMode-prop">"columnMode"</a> property for details.
<h3 class=fn>void <a name="setColumnMode-2"></a>QListBox::setColumnMode ( int columns )<tt> [virtual]</tt>
</h3><p>Sets the column layout mode for this list box to <em>columns</em>.
See the <a href="qlistbox.html#columnMode-prop">"columnMode"</a> property for details.
<h3 class=fn>void <a name="setCurrentItem"></a>QListBox::setCurrentItem ( int index )<tt> [virtual]</tt>
</h3><p>Sets the current highlighted item to <em>index</em>.
See the <a href="qlistbox.html#currentItem-prop">"currentItem"</a> property for details.
<h3 class=fn>void <a name="setCurrentItem-2"></a>QListBox::setCurrentItem ( <a href="qlistboxitem.html">QListBoxItem</a> * i )<tt> [virtual]</tt>
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> Sets the current item to the <a href="qlistboxitem.html">QListBoxItem</a> <em>i</em>.
<h3 class=fn>void <a name="setMultiSelection"></a>QListBox::setMultiSelection ( bool multi )
</h3><p>Sets whether or not the list box is in Multi selection mode to <em>multi</em>.
See the <a href="qlistbox.html#multiSelection-prop">"multiSelection"</a> property for details.
<h3 class=fn>void <a name="setRowMode"></a>QListBox::setRowMode ( <a href="qlistbox.html#LayoutMode-enum">LayoutMode</a> )<tt> [virtual]</tt>
</h3><p>Sets the row layout mode for this list box.
See the <a href="qlistbox.html#rowMode-prop">"rowMode"</a> property for details.
<h3 class=fn>void <a name="setRowMode-2"></a>QListBox::setRowMode ( int rows )<tt> [virtual]</tt>
</h3><p>Sets the row layout mode for this list box to <em>rows</em>.
See the <a href="qlistbox.html#rowMode-prop">"rowMode"</a> property for details.
<h3 class=fn>void <a name="setScrollBar"></a>QListBox::setScrollBar ( bool enable )
</h3>
<p> If <em>enable</em> is TRUE sets <a href="qscrollview.html#setVScrollBarMode">setVScrollBarMode</a>() to <a href="qscrollview.html#ScrollBarMode-enum">AlwaysOn</a>;
otherwise sets setVScrollBarMode() to <a href="qscrollview.html#ScrollBarMode-enum">AlwaysOff</a>.
<h3 class=fn>void <a name="setSelected"></a>QListBox::setSelected ( <a href="qlistboxitem.html">QListBoxItem</a> * item, bool select )<tt> [virtual]</tt>
</h3>
Selects <em>item</em> if <em>select</em> is TRUE or unselects it if <em>select</em>
is FALSE, and repaints the item appropriately.
<p> If the list box is a <a href="#SelectionMode-enum">Single</a> selection list box and <em>select</em> is
TRUE, <a href="#setSelected">setSelected</a>() calls <a href="#setCurrentItem">setCurrentItem</a>().
<p> If the list box is a <a href="#SelectionMode-enum">Single</a> selection list box, <em>select</em> is
FALSE, setSelected() calls <a href="#clearSelection">clearSelection</a>().
<p> <p>See also <a href="#multiSelection-prop">multiSelection</a>, <a href="#currentItem-prop">currentItem</a>, <a href="#clearSelection">clearSelection</a>(), and <a href="#currentItem-prop">currentItem</a>.
<h3 class=fn>void <a name="setSelected-2"></a>QListBox::setSelected ( int index, bool select )
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> If <em>select</em> is TRUE the item at position <em>index</em> is selected;
otherwise the item is deselected.
<h3 class=fn>void <a name="setSelectionMode"></a>QListBox::setSelectionMode ( <a href="qlistbox.html#SelectionMode-enum">SelectionMode</a> )<tt> [virtual]</tt>
</h3><p>Sets the selection mode of the list box.
See the <a href="qlistbox.html#selectionMode-prop">"selectionMode"</a> property for details.
<h3 class=fn>void <a name="setTopItem"></a>QListBox::setTopItem ( int index )<tt> [virtual]</tt>
</h3><p>Sets the index of an item at the top of the screen to <em>index</em>.
See the <a href="qlistbox.html#topItem-prop">"topItem"</a> property for details.
<h3 class=fn>void <a name="setVariableHeight"></a>QListBox::setVariableHeight ( bool )<tt> [virtual]</tt>
</h3><p>Sets whether this list box has variable-height rows.
See the <a href="qlistbox.html#variableHeight-prop">"variableHeight"</a> property for details.
<h3 class=fn>void <a name="setVariableWidth"></a>QListBox::setVariableWidth ( bool )<tt> [virtual]</tt>
</h3><p>Sets whether this list box has variable-width columns.
See the <a href="qlistbox.html#variableWidth-prop">"variableWidth"</a> property for details.
<h3 class=fn>void <a name="sort"></a>QListBox::sort ( bool ascending = TRUE )
</h3>
If <em>ascending</em> is TRUE sorts the items in ascending order;
otherwise sorts in descending order.
<p> To compare the items, the text (<a href="qlistboxitem.html#text">QListBoxItem::text</a>()) of the items
is used.
<p>Example: <a href="listbox-example.html#x1282">listbox/listbox.cpp</a>.
<h3 class=fn>void <a name="takeItem"></a>QListBox::takeItem ( const <a href="qlistboxitem.html">QListBoxItem</a> * item )
</h3>
Removes <em>item</em> from the list box and causes an update of the
screen display. The item is not deleted. You should normally not
need to call this function because <a href="qlistboxitem.html#~QListBoxItem">QListBoxItem::~QListBoxItem</a>()
calls it. The normal way to delete an item is with <tt>delete</tt>.
<p> <p>See also <a href="#insertItem">QListBox::insertItem</a>().
<h3 class=fn><a href="qstring.html">QString</a> <a name="text"></a>QListBox::text ( int index ) const
</h3>
Returns the text at position <em>index</em>, or <a href="qstring.html#QString-null">QString::null</a> if there
is no text at that position.
<p> <p>See also <a href="#pixmap">pixmap</a>().
<h3 class=fn>void <a name="toggleCurrentItem"></a>QListBox::toggleCurrentItem ()<tt> [protected]</tt>
</h3>
Toggles the selection status of <a href="#currentItem">currentItem</a>() and repaints if the
list box is a <a href="#SelectionMode-enum">Multi</a> selection list box.
<p> <p>See also <a href="#multiSelection-prop">multiSelection</a>.
<h3 class=fn>int <a name="topItem"></a>QListBox::topItem () const
</h3><p>Returns the index of an item at the top of the screen.
See the <a href="qlistbox.html#topItem-prop">"topItem"</a> property for details.
<h3 class=fn>int <a name="totalHeight"></a>QListBox::totalHeight () const<tt> [protected]</tt>
</h3>
<b>This function is obsolete.</b> It is provided to keep old source working. We strongly advise against using it in new code.
<p>
Returns <a href="qscrollview.html#contentsHeight">contentsHeight</a>().
<h3 class=fn>int <a name="totalWidth"></a>QListBox::totalWidth () const<tt> [protected]</tt>
</h3>
<b>This function is obsolete.</b> It is provided to keep old source working. We strongly advise against using it in new code.
<p>
Returns <a href="qscrollview.html#contentsWidth">contentsWidth</a>().
<h3 class=fn>void <a name="triggerUpdate"></a>QListBox::triggerUpdate ( bool doLayout )
</h3>
Ensures that a single paint event will occur at the end of the
current event loop iteration. If <em>doLayout</em> is TRUE, the layout
is also redone.
<h3 class=fn>void <a name="updateItem"></a>QListBox::updateItem ( int index )<tt> [protected]</tt>
</h3>
Repaints the item at position <em>index</em> in the list.
<h3 class=fn>void <a name="updateItem-2"></a>QListBox::updateItem ( <a href="qlistboxitem.html">QListBoxItem</a> * i )<tt> [protected]</tt>
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> Repaints the <a href="qlistboxitem.html">QListBoxItem</a> <em>i</em>.
<h3 class=fn>bool <a name="variableHeight"></a>QListBox::variableHeight () const
</h3><p>Returns TRUE if this list box has variable-height rows; otherwise returns FALSE.
See the <a href="qlistbox.html#variableHeight-prop">"variableHeight"</a> property for details.
<h3 class=fn>bool <a name="variableWidth"></a>QListBox::variableWidth () const
</h3><p>Returns TRUE if this list box has variable-width columns; otherwise returns FALSE.
See the <a href="qlistbox.html#variableWidth-prop">"variableWidth"</a> property for details.
<hr><h2>Property Documentation</h2>
<h3 class=fn><a href="qlistbox.html#LayoutMode-enum">LayoutMode</a> <a name="columnMode-prop"></a>columnMode</h3>
<p>This property holds the column layout mode for this list box.
<p>setColumnMode() sets the layout mode and adjusts the number of
displayed columns. The row layout mode automatically becomes <a href="#LayoutMode-enum">Variable</a>, unless the column mode is <a href="#LayoutMode-enum">Variable</a>.
<p> <p>See also <a href="#rowMode-prop">rowMode</a>, <a href="#rowMode-prop">rowMode</a>, and <a href="#numColumns-prop">numColumns</a>.
<p>Set this property's value with <a href="#setColumnMode">setColumnMode</a>() and get this property's value with <a href="#columnMode">columnMode</a>().
<h3 class=fn>uint <a name="count-prop"></a>count</h3>
<p>This property holds the number of items in the list box.
<p>
<p>Get this property's value with <a href="#count">count</a>().
<h3 class=fn>int <a name="currentItem-prop"></a>currentItem</h3>
<p>This property holds the current highlighted item.
<p>When setting this property, the highlighting is moved and the list
box scrolled as necessary.
<p> If no item has been highlighted, <a href="#currentItem">currentItem</a>() returns -1.
<p>Set this property's value with <a href="#setCurrentItem">setCurrentItem</a>() and get this property's value with <a href="#currentItem">currentItem</a>().
<h3 class=fn><a href="qstring.html">QString</a> <a name="currentText-prop"></a>currentText</h3>
<p>This property holds the text of the current item.
<p>This is equivalent to <a href="#text">text</a>(currentItem()).
<p>Get this property's value with <a href="#currentText">currentText</a>().
<h3 class=fn>bool <a name="multiSelection-prop"></a>multiSelection</h3>
<b>This function is obsolete.</b> It is provided to keep old source working. We strongly advise against using it in new code.
<p> <p>This property holds whether or not the list box is in Multi selection mode.
<p>Consider using the <a href="#selectionMode-prop">QListBox::selectionMode</a> property instead of
this property.
<p> When setting this property, Multi selection mode is used if set to TRUE and
to Single selection mode if set to FALSE.
<p> When getting this property, TRUE is returned if the list box is in
Multi selection mode or Extended selection mode, and FALSE if it is
in Single selection mode or NoSelection mode.
<p> <p>See also <a href="#selectionMode-prop">selectionMode</a>.
<p>Set this property's value with <a href="#setMultiSelection">setMultiSelection</a>() and get this property's value with <a href="#isMultiSelection">isMultiSelection</a>().
<h3 class=fn>int <a name="numColumns-prop"></a>numColumns</h3>
<p>This property holds the number of columns in the list box.
<p>This is normally 1, but can be different if <a href="#columnMode-prop">QListBox::columnMode</a> or <a href="#rowMode-prop">QListBox::rowMode</a> has been set.
<p> <p>See also <a href="#columnMode-prop">columnMode</a>, <a href="#rowMode-prop">rowMode</a>, and <a href="#numRows-prop">numRows</a>.
<p>Get this property's value with <a href="#numColumns">numColumns</a>().
<h3 class=fn>int <a name="numItemsVisible-prop"></a>numItemsVisible</h3>
<p>This property holds the number of visible items.
<p>Both partially and entirely visible items are counted.
<p>Get this property's value with <a href="#numItemsVisible">numItemsVisible</a>().
<h3 class=fn>int <a name="numRows-prop"></a>numRows</h3>
<p>This property holds the number of rows in the list box.
<p>This is equal to the number of items in the default single-column
layout, but can be different.
<p> <p>See also <a href="#columnMode-prop">columnMode</a>, <a href="#rowMode-prop">rowMode</a>, and <a href="#numColumns-prop">numColumns</a>.
<p>Get this property's value with <a href="#numRows">numRows</a>().
<h3 class=fn><a href="qlistbox.html#LayoutMode-enum">LayoutMode</a> <a name="rowMode-prop"></a>rowMode</h3>
<p>This property holds the row layout mode for this list box.
<p>This property is normally <a href="#LayoutMode-enum">Variable</a>.
<p> <a href="#setRowMode">setRowMode</a>() sets the layout mode and adjusts the number of
displayed rows. The column layout mode automatically becomes <a href="#LayoutMode-enum">Variable</a>, unless the row mode is <a href="#LayoutMode-enum">Variable</a>.
<p> <p>See also <a href="#columnMode-prop">columnMode</a>.
<p>Set this property's value with <a href="#setRowMode">setRowMode</a>() and get this property's value with <a href="#rowMode">rowMode</a>().
<h3 class=fn><a href="qlistbox.html#SelectionMode-enum">SelectionMode</a> <a name="selectionMode-prop"></a>selectionMode</h3>
<p>This property holds the selection mode of the list box.
<p>Sets the list box's selection mode, which may be one of <a href="#SelectionMode-enum">Single</a>
(the default), <a href="#SelectionMode-enum">Extended</a>, <a href="#SelectionMode-enum">Multi</a> or <a href="#SelectionMode-enum">NoSelection</a>.
<p> <p>See also <a href="#SelectionMode-enum">SelectionMode</a>.
<p>Set this property's value with <a href="#setSelectionMode">setSelectionMode</a>() and get this property's value with <a href="#selectionMode">selectionMode</a>().
<h3 class=fn>int <a name="topItem-prop"></a>topItem</h3>
<p>This property holds the index of an item at the top of the screen.
<p>When getting this property and the listbox has multiple columns,
an arbitrary item is selected and returned.
<p> When setting this property, the list box is scrolled so the item
at position <em>index</em> in the list is displayed in the top row of
the list box.
<p>Set this property's value with <a href="#setTopItem">setTopItem</a>() and get this property's value with <a href="#topItem">topItem</a>().
<h3 class=fn>bool <a name="variableHeight-prop"></a>variableHeight</h3>
<p>This property holds whether this list box has variable-height rows.
<p>When the list box has variable-height rows (the default), each row
is as high as the highest item in that row. When it has same-sized
rows, all rows are as high as the highest item in the list box.
<p> <p>See also <a href="#variableWidth-prop">variableWidth</a>.
<p>Set this property's value with <a href="#setVariableHeight">setVariableHeight</a>() and get this property's value with <a href="#variableHeight">variableHeight</a>().
<h3 class=fn>bool <a name="variableWidth-prop"></a>variableWidth</h3>
<p>This property holds whether this list box has variable-width columns.
<p>When the list box has variable-width columns, each column is as
wide as the widest item in that column. When it has same-sized
columns (the default), all columns are as wide as the widest item
in the list box.
<p> <p>See also <a href="#variableHeight-prop">variableHeight</a>.
<p>Set this property's value with <a href="#setVariableWidth">setVariableWidth</a>() and get this property's value with <a href="#variableWidth">variableWidth</a>().
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