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<li class="level1"><a href="#properties">Properties</a></li>
<li class="level1"><a href="#methods">Methods</a></li>
<li class="level1"><a href="#details">Detailed Description</a></li>
<li class="level2"><a href="#adding-support-to-exclusivegroup">Adding support to ExclusiveGroup</a></li>
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<h1 class="title">ExclusiveGroup QML Type</h1>
<span class="subtitle"></span>
<!-- $$$ExclusiveGroup-brief -->
<p><a href="qml-qtquick-controls-exclusivegroup.html">ExclusiveGroup</a> provides a way to declare several checkable controls as mutually exclusive. <a href="#details">More...</a></p>
<!-- @@@ExclusiveGroup -->
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> Import Statement:</td><td class="memItemRight bottomAlign"> import QtQuick.Controls 1.4</td></tr></table></div><ul>
<li><a href="qml-qtquick-controls-exclusivegroup-members.html">List of all members, including inherited members</a></li>
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<a name="properties"></a>
<h2 id="properties">Properties</h2>
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<li class="fn"><b><b><a href="qml-qtquick-controls-exclusivegroup.html#current-prop">current</a></b></b> : object</li>
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<h2 id="methods">Methods</h2>
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<li class="fn">void <b><b><a href="qml-qtquick-controls-exclusivegroup.html#bindCheckable-method">bindCheckable</a></b></b>(object)</li>
<li class="fn">void <b><b><a href="qml-qtquick-controls-exclusivegroup.html#unbindCheckable-method">unbindCheckable</a></b></b>(object)</li>
</ul>
<!-- $$$ExclusiveGroup-description -->
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<h2 id="details">Detailed Description</h2>
</p>
<p><a href="qml-qtquick-controls-exclusivegroup.html">ExclusiveGroup</a> can contain several <a href="qml-qtquick-controls-action.html">Action</a> items, and those will automatically get their <a href="qml-qtquick-controls-action.html#exclusiveGroup-prop">Action::exclusiveGroup</a> property assigned.</p>
<pre class="cpp">ExclusiveGroup {
id: radioInputGroup
Action {
id: dabRadioInput
text: <span class="string">"DAB"</span>
checkable: <span class="keyword">true</span>
}
Action {
id: fmRadioInput
text: <span class="string">"FM"</span>
checkable: <span class="keyword">true</span>
}
Action {
id: amRadioInput
text: <span class="string">"AM"</span>
checkable: <span class="keyword">true</span>
}
}</pre>
<p>Several controls already support <a href="qml-qtquick-controls-exclusivegroup.html">ExclusiveGroup</a>, e.g. <a href="qml-qtquick-controls-action.html">Action</a>, <a href="qml-qtquick-controls-menuitem.html">MenuItem</a>, <a href="qml-qtquick-controls-button.html">Button</a>, and <a href="qml-qtquick-controls-radiobutton.html">RadioButton</a>.</p>
<p>As <a href="qml-qtquick-controls-exclusivegroup.html">ExclusiveGroup</a> only supports <a href="qml-qtquick-controls-action.html">Action</a> as child items, we need to manually assign the <code>exclusiveGroup</code> property for other objects.</p>
<pre class="cpp">GroupBox {
id: group2
title: qsTr(<span class="string">"Tab Position"</span>)
Layout<span class="operator">.</span>fillWidth: <span class="keyword">true</span>
RowLayout {
ExclusiveGroup { id: tabPositionGroup }
RadioButton {
id: topButton
text: qsTr(<span class="string">"Top"</span>)
checked: <span class="keyword">true</span>
exclusiveGroup: tabPositionGroup
Layout<span class="operator">.</span>minimumWidth: <span class="number">100</span>
}
RadioButton {
id: bottomButton
text: qsTr(<span class="string">"Bottom"</span>)
exclusiveGroup: tabPositionGroup
Layout<span class="operator">.</span>minimumWidth: <span class="number">100</span>
}
}
}</pre>
<a name="adding-support-to-exclusivegroup"></a>
<h2 id="adding-support-to-exclusivegroup">Adding support to ExclusiveGroup</h2>
<p>It is possible to add support for <a href="qml-qtquick-controls-exclusivegroup.html">ExclusiveGroup</a> for an object or control. It should have a <code>checked</code> property, and either a <code>checkedChanged</code>, <code>toggled()</code>, or <code>toggled(bool)</code> signal. It also needs to be bound with <a href="qml-qtquick-controls-exclusivegroup.html#bindCheckable-method">ExclusiveGroup::bindCheckable()</a> when its <a href="qml-qtquick-controls-exclusivegroup.html">ExclusiveGroup</a> typed property is set.</p>
<pre class="cpp">Item {
id: myItem
property bool checked: <span class="keyword">false</span>
property ExclusiveGroup exclusiveGroup: null
onExclusiveGroupChanged: {
<span class="keyword">if</span> (exclusiveGroup)
exclusiveGroup<span class="operator">.</span>bindCheckable(myItem)
}
}</pre>
<p>The example above shows the minimum code necessary to add <a href="qml-qtquick-controls-exclusivegroup.html">ExclusiveGroup</a> support to any item.</p>
<!-- @@@ExclusiveGroup -->
<h2>Property Documentation</h2>
<!-- $$$current -->
<div class="qmlitem"><div class="qmlproto"><div class="table"><table class="qmlname"><tr valign="top" class="odd" id="current-prop"><td class="tblQmlPropNode"><p><a name="current-prop"></a><span class="name">current</span> : <span class="type">object</span></p></td></tr></table></div></div><div class="qmldoc"><p>The currently selected object. Defaults to the first checked object bound to the <a href="qml-qtquick-controls-exclusivegroup.html">ExclusiveGroup</a>. If there is none, then it defaults to <code>null</code>.</p>
</div></div><!-- @@@current -->
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<h2>Method Documentation</h2>
<!-- $$$bindCheckable -->
<div class="qmlitem"><div class="qmlproto"><div class="table"><table class="qmlname"><tr valign="top" class="odd" id="bindCheckable-method"><td class="tblQmlFuncNode"><p><a name="bindCheckable-method"></a><span class="type">void</span> <span class="name">bindCheckable</span>(<span class="type">object</span>)</p></td></tr></table></div></div><div class="qmldoc"><p>Register <code>object</code> to the exclusive group.</p>
<p>You should only need to call this function when creating a component you want to be compatible with <code>ExclusiveGroup</code>.</p>
<p><b>See also </b><a href="qml-qtquick-controls-exclusivegroup.html#unbindCheckable-method">ExclusiveGroup::unbindCheckable()</a>.</p>
</div></div><!-- @@@bindCheckable -->
<br/>
<!-- $$$unbindCheckable -->
<div class="qmlitem"><div class="qmlproto"><div class="table"><table class="qmlname"><tr valign="top" class="odd" id="unbindCheckable-method"><td class="tblQmlFuncNode"><p><a name="unbindCheckable-method"></a><span class="type">void</span> <span class="name">unbindCheckable</span>(<span class="type">object</span>)</p></td></tr></table></div></div><div class="qmldoc"><p>Unregister <code>object</code> from the exclusive group.</p>
<p>You should only need to call this function when creating a component you want to be compatible with <code>ExclusiveGroup</code>.</p>
<p><b>See also </b><a href="qml-qtquick-controls-exclusivegroup.html#bindCheckable-method">ExclusiveGroup::bindCheckable()</a>.</p>
</div></div><!-- @@@unbindCheckable -->
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