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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<h1>Wt::WButtonGroup Class Reference</h1><!-- doxytag: class="Wt::WButtonGroup" --><!-- doxytag: inherits="Wt::WObject" -->A class for grouping radio buttons logically together.
<a href="#_details">More...</a>
<p>
<code>#include <Wt/WButtonGroup></code>
<p>
<div class="dynheader">
Inheritance diagram for Wt::WButtonGroup:</div>
<div class="dynsection">
<p><center><img src="classWt_1_1WButtonGroup__inherit__graph.png" border="0" usemap="#Wt_1_1WButtonGroup__inherit__map" alt="Inheritance graph"></center>
<map name="Wt_1_1WButtonGroup__inherit__map">
<area shape="rect" href="classWt_1_1WObject.html" title="A base class for objects that participate in the signal/slot system." alt="" coords="23,5,119,32"></map>
<center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center></div>
<p>
<a href="classWt_1_1WButtonGroup-members.html">List of all members.</a><table border="0" cellpadding="0" cellspacing="0">
<tr><td></td></tr>
<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="2e29884c479c910861aa6f023d324210"></a><!-- doxytag: member="Wt::WButtonGroup::WButtonGroup" ref="2e29884c479c910861aa6f023d324210" args="(WObject *parent=0)" -->
</td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WButtonGroup.html#2e29884c479c910861aa6f023d324210">WButtonGroup</a> (<a class="el" href="classWt_1_1WObject.html">WObject</a> *parent=0)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Creates a new empty button group. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WButtonGroup.html#0f1876538ca9400a0afc7e2d2831e7a9">~WButtonGroup</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Destructor. <a href="#0f1876538ca9400a0afc7e2d2831e7a9"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WButtonGroup.html#bbe8605c1e57e75316731af9124bacca">addButton</a> (<a class="el" href="classWt_1_1WRadioButton.html">WRadioButton</a> *button, int id=-1)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Adds a radio button to the group. <a href="#bbe8605c1e57e75316731af9124bacca"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WButtonGroup.html#3a6b317dc22600acd1344de9e6a05987">addButton</a> (<a class="el" href="classWt_1_1Ext_1_1RadioButton.html">Ext::RadioButton</a> *button, int id=-1)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Adds a radio button to the group. <a href="#3a6b317dc22600acd1344de9e6a05987"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WButtonGroup.html#de4ea1cf5ac08b17e0f92153c98204d3">removeButton</a> (<a class="el" href="classWt_1_1WRadioButton.html">WRadioButton</a> *button)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Removes a radio button from the group. <a href="#de4ea1cf5ac08b17e0f92153c98204d3"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WButtonGroup.html#9b2c7ea25d0e83d9ae894c2f0ce9bd67">removeButton</a> (<a class="el" href="classWt_1_1Ext_1_1RadioButton.html">Ext::RadioButton</a> *button)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Removes a radio button from the group. <a href="#9b2c7ea25d0e83d9ae894c2f0ce9bd67"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="classWt_1_1WRadioButton.html">WRadioButton</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WButtonGroup.html#d77d4e097182bea774d3d5d34c548145">button</a> (int id) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the button for the given id. <a href="#d77d4e097182bea774d3d5d34c548145"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WButtonGroup.html#3afa1365a54718ace10b42f2e3a345bc">id</a> (<a class="el" href="classWt_1_1WRadioButton.html">WRadioButton</a> *button) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the id for the given button. <a href="#3afa1365a54718ace10b42f2e3a345bc"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual const std::string </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WButtonGroup.html#badc2ee3d7c98c6d4f7f0dcf3384d3be">id</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the (unique) identifier for this object. <a href="#badc2ee3d7c98c6d4f7f0dcf3384d3be"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="92ad438da83c631b10b69096a6d3b653"></a><!-- doxytag: member="Wt::WButtonGroup::buttons" ref="92ad438da83c631b10b69096a6d3b653" args="() const " -->
std::vector< <a class="el" href="classWt_1_1WRadioButton.html">WRadioButton</a> * > </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WButtonGroup.html#92ad438da83c631b10b69096a6d3b653">buttons</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the buttons in this group. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="ff9a2079d4fffaf4d2aa5c816bd37abf"></a><!-- doxytag: member="Wt::WButtonGroup::count" ref="ff9a2079d4fffaf4d2aa5c816bd37abf" args="() const " -->
int </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WButtonGroup.html#ff9a2079d4fffaf4d2aa5c816bd37abf">count</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the number of radiobuttons in this group. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WButtonGroup.html#00f6285ab6326a6fef8b9ca7c7646948">checkedId</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the id of the checked button. <a href="#00f6285ab6326a6fef8b9ca7c7646948"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WButtonGroup.html#c67ce8ffc614cb7319efa4657c57f25a">setCheckedButton</a> (<a class="el" href="classWt_1_1WRadioButton.html">WRadioButton</a> *button)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sets the currently checked radiobutton. <a href="#c67ce8ffc614cb7319efa4657c57f25a"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="classWt_1_1WRadioButton.html">WRadioButton</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WButtonGroup.html#92ed2843d2fdf9dfacc9d3e27b5ac994">checkedButton</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the checked radiobutton. <a href="#92ed2843d2fdf9dfacc9d3e27b5ac994"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WButtonGroup.html#968222f7cba72561b1712c90efc30d46">setSelectedButtonIndex</a> (int idx)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sets the currently checked radiobutton. <a href="#968222f7cba72561b1712c90efc30d46"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WButtonGroup.html#44aa1dc058bbfbc698289d56ba0424ee">selectedButtonIndex</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the index of the checked radiobutton. <a href="#44aa1dc058bbfbc698289d56ba0424ee"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="classWt_1_1Signal.html">Signal</a>< <a class="el" href="classWt_1_1WRadioButton.html">WRadioButton</a> * > & </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WButtonGroup.html#d5661cc6137de244819f47f492b42687">checkedChanged</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Signal emitted when a button was checked. <a href="#d5661cc6137de244819f47f492b42687"></a><br></td></tr>
</table>
<hr><a name="_details"></a><h2>Detailed Description</h2>
A class for grouping radio buttons logically together.
<p>
A button group manages a set of <a class="el" href="classWt_1_1WRadioButton.html">radio buttons</a>, making them exclusive of each other.<p>
It is not a widget, but instead provides only a logical grouping. Radio buttons are aware of the group in which they have been added, see <a class="el" href="classWt_1_1WRadioButton.html#908574da36efe50c70fc6a9d77f045cd" title="Returns the button group.">WRadioButton::group()</a>. When a button is deleted, it is automatically removed its button group.<p>
It allows you to associate id's with each button, which you may use to identify a particular button. The special value of -1 is reserved to indicate <em>no button</em>.<p>
Usage example: <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> *<a class="code" href="classWt_1_1WButtonGroup.html#d77d4e097182bea774d3d5d34c548145" title="Returns the button for the given id.">button</a>;
button = <span class="keyword">new</span> <a class="code" href="classWt_1_1WRadioButton.html" title="A user control that represents a radio button.">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#bbe8605c1e57e75316731af9124bacca" 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" title="A user control that represents a radio button.">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#bbe8605c1e57e75316731af9124bacca" 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" title="A user control that represents a radio button.">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#bbe8605c1e57e75316731af9124bacca" title="Adds a radio button to the group.">addButton</a>(button, NoVote);
group-><a class="code" href="classWt_1_1WButtonGroup.html#c67ce8ffc614cb7319efa4657c57f25a" title="Sets the currently checked radiobutton.">setCheckedButton</a>(group-><a class="code" href="classWt_1_1WButtonGroup.html#d77d4e097182bea774d3d5d34c548145" title="Returns the button for the given id.">button</a>(NoVote));
</pre></div><p>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WRadioButton.html" title="A user control that represents a radio button.">WRadioButton</a>, <a class="el" href="classWt_1_1Ext_1_1RadioButton.html" title="A user control that represents a radio button.">Ext::RadioButton</a> </dd></dl>
<hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="0f1876538ca9400a0afc7e2d2831e7a9"></a><!-- doxytag: member="Wt::WButtonGroup::~WButtonGroup" ref="0f1876538ca9400a0afc7e2d2831e7a9" args="()" -->
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<td class="memname">Wt::WButtonGroup::~WButtonGroup </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
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<div class="memdoc">
<p>
Destructor.
<p>
This does not delete the radio buttons, but simply removes them from the group.
</div>
</div><p>
<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="bbe8605c1e57e75316731af9124bacca"></a><!-- doxytag: member="Wt::WButtonGroup::addButton" ref="bbe8605c1e57e75316731af9124bacca" args="(WRadioButton *button, int id=-1)" -->
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<td class="memname">void Wt::WButtonGroup::addButton </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classWt_1_1WRadioButton.html">WRadioButton</a> * </td>
<td class="paramname"> <em>button</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>id</em> = <code>-1</code></td><td> </td>
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<td>)</td>
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<p>
Adds a radio button to the group.
<p>
You can assign an id to the button. If <code>id</code> is -1, then a unique id will be generated.<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WButtonGroup.html#de4ea1cf5ac08b17e0f92153c98204d3" title="Removes a radio button from the group.">removeButton(WRadioButton *)</a> </dd></dl>
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<a class="anchor" name="3a6b317dc22600acd1344de9e6a05987"></a><!-- doxytag: member="Wt::WButtonGroup::addButton" ref="3a6b317dc22600acd1344de9e6a05987" args="(Ext::RadioButton *button, int id=-1)" -->
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<td class="memname">void Wt::WButtonGroup::addButton </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classWt_1_1Ext_1_1RadioButton.html">Ext::RadioButton</a> * </td>
<td class="paramname"> <em>button</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">int </td>
<td class="paramname"> <em>id</em> = <code>-1</code></td><td> </td>
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<td>)</td>
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<p>
Adds a radio button to the group.
<p>
You can assign an id to the button. If <code>id</code> is -1, then a unique id will be generated.<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WButtonGroup.html#9b2c7ea25d0e83d9ae894c2f0ce9bd67" title="Removes a radio button from the group.">removeButton(Ext::RadioButton *)</a> </dd></dl>
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<a class="anchor" name="de4ea1cf5ac08b17e0f92153c98204d3"></a><!-- doxytag: member="Wt::WButtonGroup::removeButton" ref="de4ea1cf5ac08b17e0f92153c98204d3" args="(WRadioButton *button)" -->
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<td class="memname">void Wt::WButtonGroup::removeButton </td>
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<td class="paramtype"><a class="el" href="classWt_1_1WRadioButton.html">WRadioButton</a> * </td>
<td class="paramname"> <em>button</em> </td>
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<p>
Removes a radio button from the group.
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<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WButtonGroup.html#bbe8605c1e57e75316731af9124bacca" title="Adds a radio button to the group.">addButton(WRadioButton *, int)</a> </dd></dl>
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<a class="anchor" name="9b2c7ea25d0e83d9ae894c2f0ce9bd67"></a><!-- doxytag: member="Wt::WButtonGroup::removeButton" ref="9b2c7ea25d0e83d9ae894c2f0ce9bd67" args="(Ext::RadioButton *button)" -->
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<td class="memname">void Wt::WButtonGroup::removeButton </td>
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<td class="paramtype"><a class="el" href="classWt_1_1Ext_1_1RadioButton.html">Ext::RadioButton</a> * </td>
<td class="paramname"> <em>button</em> </td>
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<p>
Removes a radio button from the group.
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<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WButtonGroup.html#3a6b317dc22600acd1344de9e6a05987" title="Adds a radio button to the group.">addButton(Ext::RadioButton *, int)</a> </dd></dl>
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<a class="anchor" name="d77d4e097182bea774d3d5d34c548145"></a><!-- doxytag: member="Wt::WButtonGroup::button" ref="d77d4e097182bea774d3d5d34c548145" args="(int id) const " -->
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<td class="memname"><a class="el" href="classWt_1_1WRadioButton.html">WRadioButton</a> * Wt::WButtonGroup::button </td>
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<td class="paramtype">int </td>
<td class="paramname"> <em>id</em> </td>
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Returns the button for the given id.
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<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WButtonGroup.html#3afa1365a54718ace10b42f2e3a345bc" title="Returns the id for the given button.">id()</a>, <a class="el" href="classWt_1_1WButtonGroup.html#bbe8605c1e57e75316731af9124bacca" title="Adds a radio button to the group.">addButton()</a> </dd></dl>
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<a class="anchor" name="3afa1365a54718ace10b42f2e3a345bc"></a><!-- doxytag: member="Wt::WButtonGroup::id" ref="3afa1365a54718ace10b42f2e3a345bc" args="(WRadioButton *button) const " -->
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<td class="memname">int Wt::WButtonGroup::id </td>
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<td class="paramtype"><a class="el" href="classWt_1_1WRadioButton.html">WRadioButton</a> * </td>
<td class="paramname"> <em>button</em> </td>
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<p>
Returns the id for the given button.
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<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WButtonGroup.html#d77d4e097182bea774d3d5d34c548145" title="Returns the button for the given id.">button()</a>, <a class="el" href="classWt_1_1WButtonGroup.html#bbe8605c1e57e75316731af9124bacca" title="Adds a radio button to the group.">addButton()</a> </dd></dl>
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<a class="anchor" name="badc2ee3d7c98c6d4f7f0dcf3384d3be"></a><!-- doxytag: member="Wt::WButtonGroup::id" ref="badc2ee3d7c98c6d4f7f0dcf3384d3be" args="() const " -->
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<td class="memname">virtual const std::string Wt::WButtonGroup::id </td>
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Returns the (unique) identifier for this object.
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For a WWidget, this corresponds to the id of the DOM element that represents the widget. This is not entirely unique, since a <a class="el" href="classWt_1_1WCompositeWidget.html">composite widget</a> shares the same id as its implementation.<p>
By default, the id is auto-generated, unless a custom id is set for a widget using <a class="el" href="classWt_1_1WWidget.html#93ff9d1ca04e733cd54cd40a06775f7e" title="Sets the CSS Id.">WWidget::setId()</a>. The auto-generated id is created by concatenating <a class="el" href="classWt_1_1WObject.html#5cad0cc3f73402de1422747653ece18f" title="Returns the object name.">objectName()</a> with a unique number.<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WWidget.html#a2b7078b3b43d53a85e5244b45d504f7" title="Returns a JavaScript expression to the corresponding DOM node.">WWidget::jsRef()</a> </dd></dl>
<p>Reimplemented from <a class="el" href="classWt_1_1WObject.html#5c5cc1d7aada99baf97d0dc203e42154">Wt::WObject</a>.</p>
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<a class="anchor" name="00f6285ab6326a6fef8b9ca7c7646948"></a><!-- doxytag: member="Wt::WButtonGroup::checkedId" ref="00f6285ab6326a6fef8b9ca7c7646948" args="() const " -->
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<td class="memname">int Wt::WButtonGroup::checkedId </td>
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<td class="paramname"> </td>
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<td> const</td>
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Returns the id of the checked button.
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Returns the id of the currently checked button, or -1 if no button is currently checked.
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<a class="anchor" name="c67ce8ffc614cb7319efa4657c57f25a"></a><!-- doxytag: member="Wt::WButtonGroup::setCheckedButton" ref="c67ce8ffc614cb7319efa4657c57f25a" args="(WRadioButton *button)" -->
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<td class="memname">void Wt::WButtonGroup::setCheckedButton </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classWt_1_1WRadioButton.html">WRadioButton</a> * </td>
<td class="paramname"> <em>button</em> </td>
<td> ) </td>
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Sets the currently checked radiobutton.
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The button <code>button</code> of this group is checked. A value of <code>0</code> will uncheck all radiobuttons.<p>
Initially, no button is checked.<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WButtonGroup.html#00f6285ab6326a6fef8b9ca7c7646948" title="Returns the id of the checked button.">checkedId()</a> </dd></dl>
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<a class="anchor" name="92ed2843d2fdf9dfacc9d3e27b5ac994"></a><!-- doxytag: member="Wt::WButtonGroup::checkedButton" ref="92ed2843d2fdf9dfacc9d3e27b5ac994" args="() const " -->
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<td class="memname"><a class="el" href="classWt_1_1WRadioButton.html">WRadioButton</a> * Wt::WButtonGroup::checkedButton </td>
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Returns the checked radiobutton.
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If there is no radiobutton currently checked this function returns <code>0</code>.<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WButtonGroup.html#c67ce8ffc614cb7319efa4657c57f25a" title="Sets the currently checked radiobutton.">setCheckedButton()</a>, <a class="el" href="classWt_1_1WButtonGroup.html#44aa1dc058bbfbc698289d56ba0424ee" title="Returns the index of the checked radiobutton.">selectedButtonIndex()</a> </dd></dl>
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<a class="anchor" name="968222f7cba72561b1712c90efc30d46"></a><!-- doxytag: member="Wt::WButtonGroup::setSelectedButtonIndex" ref="968222f7cba72561b1712c90efc30d46" args="(int idx)" -->
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<td class="memname">void Wt::WButtonGroup::setSelectedButtonIndex </td>
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<td class="paramname"> <em>idx</em> </td>
<td> ) </td>
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<p>
Sets the currently checked radiobutton.
<p>
Sets the <code>idx'th</code> radiobutton checked. A value of -1 will uncheck all radiobuttons.<p>
Initially, no button is checked.
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<a class="anchor" name="44aa1dc058bbfbc698289d56ba0424ee"></a><!-- doxytag: member="Wt::WButtonGroup::selectedButtonIndex" ref="44aa1dc058bbfbc698289d56ba0424ee" args="() const " -->
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<td class="memname">int Wt::WButtonGroup::selectedButtonIndex </td>
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<p>
Returns the index of the checked radiobutton.
<p>
The index reflects the order in which the buttons have been added to the button group. Use <a class="el" href="classWt_1_1WButtonGroup.html#00f6285ab6326a6fef8b9ca7c7646948" title="Returns the id of the checked button.">checkedId()</a> if you want to know the id of the button that is currently checked. If there is no radiobutton selected this function returns -1.<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WButtonGroup.html#00f6285ab6326a6fef8b9ca7c7646948" title="Returns the id of the checked button.">checkedId()</a> </dd></dl>
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<a class="anchor" name="d5661cc6137de244819f47f492b42687"></a><!-- doxytag: member="Wt::WButtonGroup::checkedChanged" ref="d5661cc6137de244819f47f492b42687" args="()" -->
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<td class="memname"><a class="el" href="classWt_1_1Signal.html">Signal</a>< <a class="el" href="classWt_1_1WRadioButton.html">WRadioButton</a> * > & Wt::WButtonGroup::checkedChanged </td>
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<p>
Signal emitted when a button was checked.
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The argument passed is the new <a class="el" href="classWt_1_1WButtonGroup.html#92ed2843d2fdf9dfacc9d3e27b5ac994" title="Returns the checked radiobutton.">checkedButton()</a>.
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