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<title>CheckBox QML Type | QtQuickControls 5.3</title>
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<li>Qt 5.3</li>
<li><a href="qtquickcontrols-index.html">Qt Quick Controls</a></li>
<li><a href="qtquick-controls-qmlmodule.html">QML Types</a></li>
<li>CheckBox QML Type</li>
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Qt 5.3.2 Reference Documentation</li>
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<h3><a name="toc">Contents</a></h3>
<ul>
<li class="level1"><a href="#properties">Properties</a></li>
<li class="level1"><a href="#signals">Signals</a></li>
<li class="level1"><a href="#details">Detailed Description</a></li>
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<h1 class="title">CheckBox QML Type</h1>
<span class="subtitle"></span>
<!-- $$$CheckBox-brief -->
<p>A checkbox with a text label. <a href="#details">More...</a></p>
<!-- @@@CheckBox -->
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> Import Statement:</td><td class="memItemRight bottomAlign"> </b><tt>import QtQuick.Controls 1.2</tt></td></tr><tr><td class="memItemLeft rightAlign topAlign"> Since:</td><td class="memItemRight bottomAlign"> Qt 5.1</td></tr><tr><td class="memItemLeft rightAlign topAlign"> Inherits:</td><td class="memItemRight bottomAlign"> <p><a href="../qtquick/qml-qtquick-focusscope.html">FocusScope</a></p>
</td></tr></table><ul>
<li><a href="qml-qtquick-controls-checkbox-members.html">List of all members, including inherited members</a></li>
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<a name="properties"></a>
<h2>Properties</h2>
<ul>
<li class="fn"><b><b><a href="qml-qtquick-controls-checkbox.html#activeFocusOnPress-prop">activeFocusOnPress</a></b></b> : bool</li>
<li class="fn"><b><b><a href="qml-qtquick-controls-checkbox.html#checked-prop">checked</a></b></b> : bool</li>
<li class="fn"><b><b><a href="qml-qtquick-controls-checkbox.html#checkedState-prop">checkedState</a></b></b> : int</li>
<li class="fn"><b><b><a href="qml-qtquick-controls-checkbox.html#exclusiveGroup-prop">exclusiveGroup</a></b></b> : ExclusiveGroup</li>
<li class="fn"><b><b><a href="qml-qtquick-controls-checkbox.html#hovered-prop">hovered</a></b></b> : bool</li>
<li class="fn"><b><b><a href="qml-qtquick-controls-checkbox.html#partiallyCheckedEnabled-prop">partiallyCheckedEnabled</a></b></b> : bool</li>
<li class="fn"><b><b><a href="qml-qtquick-controls-checkbox.html#pressed-prop">pressed</a></b></b> : bool</li>
<li class="fn"><b><b><a href="qml-qtquick-controls-checkbox.html#style-prop">style</a></b></b> : Component</li>
<li class="fn"><b><b><a href="qml-qtquick-controls-checkbox.html#text-prop">text</a></b></b> : string</li>
</ul>
<a name="signals"></a>
<h2>Signals</h2>
<ul>
<li class="fn"><b><b><a href="qml-qtquick-controls-checkbox.html#clicked-signal">clicked</a></b></b>()</li>
</ul>
<!-- $$$CheckBox-description -->
<a name="details"></a>
<h2>Detailed Description</h2>
<p class="centerAlign"><img src="images/checkbox.png" alt="" /></p><p>A CheckBox is an option button that can be toggled on (checked) or off (unchecked). Checkboxes are typically used to represent features in an application that can be enabled or disabled without affecting others.</p>
<p>The state of the checkbox can be set with the <a href="qml-qtquick-controls-checkbox.html#checked-prop">checked</a> property.</p>
<p>In addition to the checked and unchecked states, there is a third state: partially checked. This state indicates that the regular checked/unchecked state can not be determined; generally because of other states that affect the checkbox. This state is useful when several child nodes are selected in a treeview, for example.</p>
<p>The partially checked state can be made available to the user by setting <a href="qml-qtquick-controls-checkbox.html#partiallyCheckedEnabled-prop">partiallyCheckedEnabled</a> to <tt>true</tt>, or set directly by setting <a href="qml-qtquick-controls-checkbox.html#checkedState-prop">checkedState</a> to <tt>Qt.PartiallyChecked</tt>. <a href="qml-qtquick-controls-checkbox.html#checkedState-prop">checkedState</a> behaves identically to <a href="qml-qtquick-controls-checkbox.html#checked-prop">checked</a> when <a href="qml-qtquick-controls-checkbox.html#partiallyCheckedEnabled-prop">partiallyCheckedEnabled</a> is <tt>false</tt>; setting one will appropriately set the other.</p>
<p>The label is shown next to the checkbox, and you can set the label text using its <a href="qml-qtquick-controls-checkbox.html#text-prop">text</a> property.</p>
<pre class="qml"><span class="type"><a href="../qtquick/qml-qtquick-column.html">Column</a></span> {
<span class="type">CheckBox</span> {
<span class="name">text</span>: <span class="name">qsTr</span>(<span class="string">"Breakfast"</span>)
<span class="name">checked</span>: <span class="number">true</span>
}
<span class="type">CheckBox</span> {
<span class="name">text</span>: <span class="name">qsTr</span>(<span class="string">"Lunch"</span>)
}
<span class="type">CheckBox</span> {
<span class="name">text</span>: <span class="name">qsTr</span>(<span class="string">"Dinner"</span>)
<span class="name">checked</span>: <span class="number">true</span>
}
}</pre>
<p>Whenever a CheckBox is clicked, it emits the <a href="qml-qtquick-controls-checkbox.html#clicked-signal">clicked()</a> signal.</p>
<p>You can create a custom appearance for a CheckBox by assigning a <a href="qml-qtquick-controls-styles-checkboxstyle.html">CheckBoxStyle</a>.</p>
<!-- @@@CheckBox -->
<h2>Property Documentation</h2>
<!-- $$$activeFocusOnPress -->
<div class="qmlitem"><div class="qmlproto"><table class="qmlname"><tr valign="top" class="odd"><td class="tblQmlPropNode"><p><a name="activeFocusOnPress-prop"></a><span class="name">activeFocusOnPress</span> : <span class="type"><a href="../qtqml/qml-bool.html">bool</a></span></p></td></tr></table></div><div class="qmldoc"><p>This property is <tt>true</tt> if the control takes the focus when it is pressed; <a href="../qtquick/qquickitem.html#forceActiveFocus">forceActiveFocus()</a> will be called on the control.</p>
</div></div><!-- @@@activeFocusOnPress -->
<br/>
<!-- $$$checked -->
<div class="qmlitem"><div class="qmlproto"><table class="qmlname"><tr valign="top" class="odd"><td class="tblQmlPropNode"><p><a name="checked-prop"></a><span class="name">checked</span> : <span class="type"><a href="../qtqml/qml-bool.html">bool</a></span></p></td></tr></table></div><div class="qmldoc"><p>This property is <tt>true</tt> if the control is checked.</p>
</div></div><!-- @@@checked -->
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<!-- $$$checkedState -->
<div class="qmlitem"><div class="qmlproto"><table class="qmlname"><tr valign="top" class="odd"><td class="tblQmlPropNode"><p><a name="checkedState-prop"></a><span class="name">checkedState</span> : <span class="type"><a href="../qtqml/qml-int.html">int</a></span></p></td></tr></table></div><div class="qmldoc"><p>This property indicates the current checked state of the checkbox.</p>
<p>Possible values: <tt>Qt.UnChecked</tt> - The checkbox is not checked (default). <tt>Qt.Checked</tt> - The checkbox is checked. <tt>Qt.PartiallyChecked</tt> - The checkbox is in a partially checked (or "mixed") state.</p>
<p>The <a href="qml-qtquick-controls-abstractcheckable.html#checked-prop">checked</a> property also determines whether this property is <tt>Qt.Checked</tt> or <tt>Qt.UnChecked</tt>, and vice versa.</p>
</div></div><!-- @@@checkedState -->
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<!-- $$$exclusiveGroup -->
<div class="qmlitem"><div class="qmlproto"><table class="qmlname"><tr valign="top" class="odd"><td class="tblQmlPropNode"><p><a name="exclusiveGroup-prop"></a><span class="name">exclusiveGroup</span> : <span class="type"><a href="qml-qtquick-controls-exclusivegroup.html">ExclusiveGroup</a></span></p></td></tr></table></div><div class="qmldoc"><p>This property stores the <a href="qml-qtquick-controls-exclusivegroup.html">ExclusiveGroup</a> that the control belongs to.</p>
</div></div><!-- @@@exclusiveGroup -->
<br/>
<!-- $$$hovered -->
<div class="qmlitem"><div class="qmlproto"><table class="qmlname"><tr valign="top" class="odd"><td class="tblQmlPropNode"><p><a name="hovered-prop"></a><span class="qmlreadonly">read-only</span><span class="name">hovered</span> : <span class="type"><a href="../qtqml/qml-bool.html">bool</a></span></p></td></tr></table></div><div class="qmldoc"><p>This property indicates whether the control is being hovered.</p>
</div></div><!-- @@@hovered -->
<br/>
<!-- $$$partiallyCheckedEnabled -->
<div class="qmlitem"><div class="qmlproto"><table class="qmlname"><tr valign="top" class="odd"><td class="tblQmlPropNode"><p><a name="partiallyCheckedEnabled-prop"></a><span class="name">partiallyCheckedEnabled</span> : <span class="type"><a href="../qtqml/qml-bool.html">bool</a></span></p></td></tr></table></div><div class="qmldoc"><p>This property determines whether the <tt>Qt.PartiallyChecked</tt> state is available.</p>
<p>A checkbox may be in a partially checked state when the regular checked state can not be determined.</p>
<p>Setting <a href="qml-qtquick-controls-checkbox.html#checkedState-prop">checkedState</a> to <tt>Qt.PartiallyChecked</tt> will implicitly set this property to <tt>true</tt>.</p>
<p>If this property is <tt>true</tt>, <a href="qml-qtquick-controls-abstractcheckable.html#checked-prop">checked</a> will be <tt>false</tt>.</p>
<p>By default, this property is <tt>false</tt>.</p>
</div></div><!-- @@@partiallyCheckedEnabled -->
<br/>
<!-- $$$pressed -->
<div class="qmlitem"><div class="qmlproto"><table class="qmlname"><tr valign="top" class="odd"><td class="tblQmlPropNode"><p><a name="pressed-prop"></a><span class="name">pressed</span> : <span class="type"><a href="../qtqml/qml-bool.html">bool</a></span></p></td></tr></table></div><div class="qmldoc"><p>This property is <tt>true</tt> if the control is being pressed. Set this property to manually invoke a mouse click.</p>
</div></div><!-- @@@pressed -->
<br/>
<!-- $$$style -->
<div class="qmlitem"><div class="qmlproto"><table class="qmlname"><tr valign="top" class="odd"><td class="tblQmlPropNode"><p><a name="style-prop"></a><span class="name">style</span> : <span class="type"><a href="../qtqml/qml-qtqml-component.html">Component</a></span></p></td></tr></table></div><div class="qmldoc"><p>The style Component for this control.</p>
<p><b>See also </b><a href="qtquick-controls-styles-qmlmodule.html">Qt Quick Controls Styles QML Types</a>.</p>
</div></div><!-- @@@style -->
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<!-- $$$text -->
<div class="qmlitem"><div class="qmlproto"><table class="qmlname"><tr valign="top" class="odd"><td class="tblQmlPropNode"><p><a name="text-prop"></a><span class="name">text</span> : <span class="type"><a href="../qtqml/qml-string.html">string</a></span></p></td></tr></table></div><div class="qmldoc"><p>This property holds the text that the label should display.</p>
</div></div><!-- @@@text -->
<br/>
<h2>Signal Documentation</h2>
<!-- $$$clicked -->
<div class="qmlitem"><div class="qmlproto"><table class="qmlname"><tr valign="top" class="odd"><td class="tblQmlFuncNode"><p><a name="clicked-signal"></a><span class="name">clicked</span>()</p></td></tr></table></div><div class="qmldoc"><p>Emitted whenever the control is clicked.</p>
</div></div><!-- @@@clicked -->
<br/>
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