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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>QFocusData Class Reference</h1>
<p>The QFocusData class maintains the list of widgets in the focus
chain.
<a href="#details">More...</a>
<p><tt>#include <<a href="qfocusdata-h.html">qfocusdata.h</a>></tt>
<p><a href="qfocusdata-members.html">List of all member functions.</a>
<h2>Public Members</h2>
<ul>
<li><div class=fn>QWidget * <a href="#focusWidget"><b>focusWidget</b></a> () const</div></li>
<li><div class=fn>QWidget * <a href="#home"><b>home</b></a> ()</div></li>
<li><div class=fn>QWidget * <a href="#next"><b>next</b></a> ()</div></li>
<li><div class=fn>QWidget * <a href="#prev"><b>prev</b></a> ()</div></li>
<li><div class=fn>int <a href="#count"><b>count</b></a> () const</div></li>
</ul>
<hr><a name="details"></a><h2>Detailed Description</h2>
The QFocusData class maintains the list of widgets in the focus
chain.
<p> This read-only list always contains at least one widget (i.e. the
top-level widget). It provides a simple cursor which can be reset to
the current focus widget using <a href="#home">home</a>(), or moved to its neighboring
widgets using <a href="#next">next</a>() and <a href="#prev">prev</a>(). You can also retrieve the <a href="#count">count</a>() of
the number of widgets in the list. The list is a loop, so if you keep
iterating, for example using next(), you will never come to the end.
<p> Some widgets in the list may not accept focus. Widgets are added to
the list as necessary, but not removed from it. This lets widgets
change focus policy dynamically without disrupting the focus chain the
user experiences. When a widget disables and re-enables tab focus, its
position in the focus chain does not change.
<p> When reimplementing <a href="qwidget.html#focusNextPrevChild">QWidget::focusNextPrevChild</a>() to provide special
focus flow, you will usually call <a href="qwidget.html#focusData">QWidget::focusData</a>() to retrieve the
focus data stored at the top-level widget. A top-level widget's focus
data contains the focus list for its hierarchy of widgets.
<p> The cursor may change at any time.
<p> This class is <em>not</em> thread-safe.
<p> <p>See also <a href="qwidget.html#focusNextPrevChild">QWidget::focusNextPrevChild</a>(), <a href="qwidget.html#setTabOrder">QWidget::setTabOrder</a>(), <a href="qwidget.html#focusPolicy-prop">QWidget::focusPolicy</a> and <a href="misc.html">Miscellaneous Classes</a>.
<hr><h2>Member Function Documentation</h2>
<h3 class=fn>int <a name="count"></a>QFocusData::count () const
</h3>
<p> Returns the number of widgets in the focus chain.
<h3 class=fn><a href="qwidget.html">QWidget</a> * <a name="focusWidget"></a>QFocusData::focusWidget () const
</h3>
<p> Returns the widgets in the hierarchy that are in the focus chain.
<h3 class=fn><a href="qwidget.html">QWidget</a> * <a name="home"></a>QFocusData::home ()
</h3>
Moves the cursor to the <a href="#focusWidget">focusWidget</a>() and returns that widget.
You must call this before <a href="#next">next</a>() or <a href="#prev">prev</a>() to iterate meaningfully.
<h3 class=fn><a href="qwidget.html">QWidget</a> * <a name="next"></a>QFocusData::next ()
</h3>
Moves the cursor to the next widget in the focus chain. There is <em>always</em> a next widget because the list is a loop.
<h3 class=fn><a href="qwidget.html">QWidget</a> * <a name="prev"></a>QFocusData::prev ()
</h3>
Moves the cursor to the previous widget in the focus chain. There is <em>always</em> a previous widget because the list is a loop.
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