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 <span id="projectnumber">3.2.1</span>
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<!-- doxytag: class="Wt::WRadioButton" --><!-- doxytag: inherits="Wt::WAbstractToggleButton" -->
<p>A user control that represents a radio button.
<a href="classWt_1_1WRadioButton.html#details">More...</a></p>
<p><code>#include <Wt/WRadioButton></code></p>
<div class="dynheader">
Inheritance diagram for Wt::WRadioButton:</div>
<div class="dyncontent">
<div class="center"><img src="classWt_1_1WRadioButton__inherit__graph.png" border="0" usemap="#Wt_1_1WRadioButton_inherit__map" alt="Inheritance graph"/></div>
<map name="Wt_1_1WRadioButton_inherit__map" id="Wt_1_1WRadioButton_inherit__map">
<area shape="rect" href="classWt_1_1WAbstractToggleButton.html" title="An abstract base class for radio buttons and check boxes." alt="" coords="5,379,189,405"/><area shape="rect" href="classWt_1_1WFormWidget.html" title="An abstract widget that corresponds to an HTML form element." alt="" coords="32,304,163,331"/><area shape="rect" href="classWt_1_1WInteractWidget.html" title="An abstract widget that can receive user-interface interaction." alt="" coords="25,229,169,256"/><area shape="rect" href="classWt_1_1WWebWidget.html" title="A base class for widgets with an HTML counterpart." alt="" coords="33,155,161,181"/><area shape="rect" href="classWt_1_1WWidget.html" title="The abstract base class for a user-interface component." alt="" coords="48,80,147,107"/><area shape="rect" href="classWt_1_1WObject.html" title="A base class for objects that participate in the signal/slot system." alt="" coords="49,5,145,32"/></map>
<center><span class="legend">[<a href="graph_legend.html">legend</a>]</span></center></div>
<p><a href="classWt_1_1WRadioButton-members.html">List of all members.</a></p>
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="af2a014f58ee5e9105e409c7e7b0219ff"></a><!-- doxytag: member="Wt::WRadioButton::WRadioButton" ref="af2a014f58ee5e9105e409c7e7b0219ff" args="(WContainerWidget *parent=0)" -->
 </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WRadioButton.html#af2a014f58ee5e9105e409c7e7b0219ff">WRadioButton</a> (<a class="el" href="classWt_1_1WContainerWidget.html">WContainerWidget</a> *parent=0)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Creates an unchecked radio button with empty label and optional parent. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a1b05a25ac8803ad9cb96b441f0c09eee"></a><!-- doxytag: member="Wt::WRadioButton::WRadioButton" ref="a1b05a25ac8803ad9cb96b441f0c09eee" args="(const WString &text, WContainerWidget *parent=0)" -->
 </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WRadioButton.html#a1b05a25ac8803ad9cb96b441f0c09eee">WRadioButton</a> (const <a class="el" href="classWt_1_1WString.html">WString</a> &text, <a class="el" href="classWt_1_1WContainerWidget.html">WContainerWidget</a> *parent=0)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Creates an unchecked radio button with given text and optional parent. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a234ed5e2d0e698b80d4e7c8b65f027c2"></a><!-- doxytag: member="Wt::WRadioButton::~WRadioButton" ref="a234ed5e2d0e698b80d4e7c8b65f027c2" args="()" -->
 </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WRadioButton.html#a234ed5e2d0e698b80d4e7c8b65f027c2">~WRadioButton</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Destructor. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="classWt_1_1WButtonGroup.html">WButtonGroup</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WRadioButton.html#a908574da36efe50c70fc6a9d77f045cd">group</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the button group. <a href="#a908574da36efe50c70fc6a9d77f045cd"></a><br/></td></tr>
</table>
<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
<div class="textblock"><p>A user control that represents a radio button. </p>
<p>Use a <a class="el" href="classWt_1_1WButtonGroup.html" title="A class for grouping radio buttons logically together.">WButtonGroup</a> to group together radio buttons that reflect options that are mutually exclusive.</p>
<p>Usage example: </p>
<div class="fragment"><pre class="fragment"> <span class="keyword">enum</span> Vote { Republican = 1, Democrate = 2, NoVote = 10 };
<span class="comment">// use a group box as widget container for 3 radio buttons, with a title</span>
<a class="code" href="classWt_1_1WGroupBox.html" title="A widget which group widgets into a frame with a title.">Wt::WGroupBox</a> *container = <span class="keyword">new</span> <a class="code" href="classWt_1_1WGroupBox.html" title="A widget which group widgets into a frame with a title.">Wt::WGroupBox</a>(<span class="stringliteral">"USA elections vote"</span>);
<span class="comment">// use a button group to logically group the 3 options</span>
<a class="code" href="classWt_1_1WButtonGroup.html" title="A class for grouping radio buttons logically together.">Wt::WButtonGroup</a> *group = <span class="keyword">new</span> <a class="code" href="classWt_1_1WButtonGroup.html" title="A class for grouping radio buttons logically together.">Wt::WButtonGroup</a>(<span class="keyword">this</span>);
<a class="code" href="classWt_1_1WRadioButton.html" title="A user control that represents a radio button.">Wt::WRadioButton</a> *button;
button = <span class="keyword">new</span> <a class="code" href="classWt_1_1WRadioButton.html#af2a014f58ee5e9105e409c7e7b0219ff" title="Creates an unchecked radio button with empty label and optional parent.">Wt::WRadioButton</a>(<span class="stringliteral">"I voted Republican"</span>, container);
<span class="keyword">new</span> <a class="code" href="classWt_1_1WBreak.html" title="A widget that provides a line break between inline widgets.">Wt::WBreak</a>(container);
group-><a class="code" href="classWt_1_1WButtonGroup.html#abbe8605c1e57e75316731af9124bacca" title="Adds a radio button to the group.">addButton</a>(button, Republican);
button = <span class="keyword">new</span> <a class="code" href="classWt_1_1WRadioButton.html#af2a014f58ee5e9105e409c7e7b0219ff" title="Creates an unchecked radio button with empty label and optional parent.">Wt::WRadioButton</a>(<span class="stringliteral">"I voted Democrat"</span>, container);
<span class="keyword">new</span> <a class="code" href="classWt_1_1WBreak.html" title="A widget that provides a line break between inline widgets.">Wt::WBreak</a>(container);
group-><a class="code" href="classWt_1_1WButtonGroup.html#abbe8605c1e57e75316731af9124bacca" title="Adds a radio button to the group.">addButton</a>(button, Democrate);
button = <span class="keyword">new</span> <a class="code" href="classWt_1_1WRadioButton.html#af2a014f58ee5e9105e409c7e7b0219ff" title="Creates an unchecked radio button with empty label and optional parent.">Wt::WRadioButton</a>(<span class="stringliteral">"I didn't vote"</span>, container);
<span class="keyword">new</span> <a class="code" href="classWt_1_1WBreak.html" title="A widget that provides a line break between inline widgets.">Wt::WBreak</a>(container);
group-><a class="code" href="classWt_1_1WButtonGroup.html#abbe8605c1e57e75316731af9124bacca" title="Adds a radio button to the group.">addButton</a>(button, NoVote);
group-><a class="code" href="classWt_1_1WButtonGroup.html#ac67ce8ffc614cb7319efa4657c57f25a" title="Sets the currently checked radiobutton.">setCheckedButton</a>(group-><a class="code" href="classWt_1_1WButtonGroup.html#ad77d4e097182bea774d3d5d34c548145" title="Returns the button for the given id.">button</a>(NoVote));
</pre></div><p>WRadioButton is an <a class="el" href="classWt_1_1WWidget.html#ac78e3af143883334c82031790c87416e">inline </a> widget.</p>
<h3>CSS</h3>
<p>This widget corresponds to the HTML <code><input type="radio"></code> tag. Depending on whether a text is included, it may be nested in a <code><span></code> tag which also includes a rendered <a class="el" href="classWt_1_1WLabel.html" title="A label for a form field.">WLabel</a>. This widget does not provide styling, and can be styled using inline or external CSS as appropriate.</p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WAbstractToggleButton.html" title="An abstract base class for radio buttons and check boxes.">WAbstractToggleButton</a>, <a class="el" href="classWt_1_1WButtonGroup.html" title="A class for grouping radio buttons logically together.">WButtonGroup</a> </dd></dl>
</div><hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="a908574da36efe50c70fc6a9d77f045cd"></a><!-- doxytag: member="Wt::WRadioButton::group" ref="a908574da36efe50c70fc6a9d77f045cd" args="() const " -->
<div class="memitem">
<div class="memproto">
<table class="memname">
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<td class="memname"><a class="el" href="classWt_1_1WButtonGroup.html">WButtonGroup</a>* Wt::WRadioButton::group </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Returns the button group. </p>
<p>Returns the button group to which this button belongs.</p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WButtonGroup.html#abbe8605c1e57e75316731af9124bacca" title="Adds a radio button to the group.">WButtonGroup::addButton(WRadioButton *, int)</a> </dd></dl>
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