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  <title>QSpinBox Class | Qt Widgets 5.12.6</title>
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<td >Qt 5.12</td><td ><a href="qtwidgets-index.html">Qt Widgets</a></td><td ><a href="qtwidgets-module.html">C++ Classes</a></td><td >QSpinBox</td></tr></table><table class="buildversion"><tr>
<td id="buildversion" width="100%" align="right"><a href="qtwidgets-index.html">Qt 5.12.6 Reference Documentation</a></td>
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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="#public-functions">Public Functions</a></li>
<li class="level1"><a href="#public-slots">Public Slots</a></li>
<li class="level1"><a href="#signals">Signals</a></li>
<li class="level1"><a href="#static-public-members">Static Public Members</a></li>
<li class="level1"><a href="#protected-functions">Protected Functions</a></li>
<li class="level1"><a href="#reimplemented-protected-functions">Reimplemented Protected Functions</a></li>
<li class="level1"><a href="#details">Detailed Description</a></li>
<li class="level2"><a href="#subclassing-qspinbox">Subclassing QSpinBox</a></li>
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<h1 class="title">QSpinBox Class</h1>
<!-- $$$QSpinBox-brief -->
<p>The <a href="qspinbox.html">QSpinBox</a> class provides a spin box widget. <a href="#details">More...</a></p>
<!-- @@@QSpinBox -->
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> Header:</td><td class="memItemRight bottomAlign">   <span class="preprocessor">#include &lt;QSpinBox&gt;</span>
</td></tr><tr><td class="memItemLeft rightAlign topAlign"> qmake:</td><td class="memItemRight bottomAlign"> QT += widgets</td></tr><tr><td class="memItemLeft rightAlign topAlign"> Inherits:</td><td class="memItemRight bottomAlign"> <a href="qabstractspinbox.html">QAbstractSpinBox</a></td></tr></table></div><ul>
<li><a href="qspinbox-members.html">List of all members, including inherited members</a></li>
<li><a href="qspinbox-obsolete.html">Obsolete members</a></li>
</ul>
<a name="properties"></a>
<h2 id="properties">Properties</h2>
<div class="table"><table class="propsummary">
<tr><td class="topAlign"><ul>
<li class="fn"><b><a href="qspinbox.html#cleanText-prop">cleanText</a></b> : const QString</li>
<li class="fn"><b><a href="qspinbox.html#displayIntegerBase-prop">displayIntegerBase</a></b> : int</li>
<li class="fn"><b><a href="qspinbox.html#maximum-prop">maximum</a></b> : int</li>
<li class="fn"><b><a href="qspinbox.html#minimum-prop">minimum</a></b> : int</li>
<li class="fn"><b><a href="qspinbox.html#prefix-prop">prefix</a></b> : QString</li>
</ul></td><td class="topAlign"><ul>
<li class="fn"><b><a href="qspinbox.html#singleStep-prop">singleStep</a></b> : int</li>
<li class="fn"><b><a href="qspinbox.html#stepType-prop">stepType</a></b> : StepType</li>
<li class="fn"><b><a href="qspinbox.html#suffix-prop">suffix</a></b> : QString</li>
<li class="fn"><b><a href="qspinbox.html#value-prop">value</a></b> : int</li>
</ul>
</td></tr>
</table></div>
<ul>
<li class="fn">12 properties inherited from <a href="qabstractspinbox.html#properties">QAbstractSpinBox</a></li>
<li class="fn">59 properties inherited from <a href="qwidget.html#properties">QWidget</a></li>
<li class="fn">1 property inherited from <a href="../qtcore/qobject.html#properties">QObject</a></li>
</ul>
<a name="public-functions"></a>
<h2 id="public-functions">Public Functions</h2>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qspinbox.html#QSpinBox">QSpinBox</a></b>(QWidget *<i>parent</i> = nullptr)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual </td><td class="memItemRight bottomAlign"><b><a href="qspinbox.html#dtor.QSpinBox">~QSpinBox</a></b>()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QString </td><td class="memItemRight bottomAlign"><b><a href="qspinbox.html#cleanText-prop">cleanText</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qspinbox.html#displayIntegerBase-prop">displayIntegerBase</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qspinbox.html#maximum-prop">maximum</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qspinbox.html#minimum-prop">minimum</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QString </td><td class="memItemRight bottomAlign"><b><a href="qspinbox.html#prefix-prop">prefix</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qspinbox.html#displayIntegerBase-prop">setDisplayIntegerBase</a></b>(int <i>base</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qspinbox.html#maximum-prop">setMaximum</a></b>(int <i>max</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qspinbox.html#minimum-prop">setMinimum</a></b>(int <i>min</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qspinbox.html#prefix-prop">setPrefix</a></b>(const QString &amp;<i>prefix</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qspinbox.html#setRange">setRange</a></b>(int <i>minimum</i>, int <i>maximum</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qspinbox.html#singleStep-prop">setSingleStep</a></b>(int <i>val</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qspinbox.html#setStepType">setStepType</a></b>(QAbstractSpinBox::StepType <i>stepType</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qspinbox.html#suffix-prop">setSuffix</a></b>(const QString &amp;<i>suffix</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qspinbox.html#singleStep-prop">singleStep</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QAbstractSpinBox::StepType </td><td class="memItemRight bottomAlign"><b><a href="qspinbox.html#stepType-prop">stepType</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QString </td><td class="memItemRight bottomAlign"><b><a href="qspinbox.html#suffix-prop">suffix</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qspinbox.html#value-prop">value</a></b>() const</td></tr>
</table></div>
<ul>
<li class="fn">30 public functions inherited from <a href="qabstractspinbox.html#public-functions">QAbstractSpinBox</a></li>
<li class="fn">214 public functions inherited from <a href="qwidget.html#public-functions">QWidget</a></li>
<li class="fn">31 public functions inherited from <a href="../qtcore/qobject.html#public-functions">QObject</a></li>
<li class="fn">14 public functions inherited from <a href="../qtgui/qpaintdevice.html#public-functions">QPaintDevice</a></li>
</ul>
<a name="public-slots"></a>
<h2 id="public-slots">Public Slots</h2>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qspinbox.html#value-prop">setValue</a></b>(int <i>val</i>)</td></tr>
</table></div>
<ul>
<li class="fn">4 public slots inherited from <a href="qabstractspinbox.html#public-slots">QAbstractSpinBox</a></li>
<li class="fn">19 public slots inherited from <a href="qwidget.html#public-slots">QWidget</a></li>
<li class="fn">1 public slot inherited from <a href="../qtcore/qobject.html#public-slots">QObject</a></li>
</ul>
<a name="signals"></a>
<h2 id="signals">Signals</h2>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qspinbox.html#valueChanged">valueChanged</a></b>(int <i>i</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qspinbox.html#valueChanged-1">valueChanged</a></b>(const QString &amp;<i>text</i>)</td></tr>
</table></div>
<ul>
<li class="fn">1 signal inherited from <a href="qabstractspinbox.html#signals">QAbstractSpinBox</a></li>
<li class="fn">3 signals inherited from <a href="qwidget.html#signals">QWidget</a></li>
<li class="fn">2 signals inherited from <a href="../qtcore/qobject.html#signals">QObject</a></li>
</ul>
<a name="static-public-members"></a>
<h2 id="static-public-members">Static Public Members</h2>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> const QMetaObject </td><td class="memItemRight bottomAlign"><b><a href="qspinbox.html#staticMetaObject-var">staticMetaObject</a></b></td></tr>
</table></div>
<ul>
<li class="fn">5 static public members inherited from <a href="qwidget.html#static-public-members">QWidget</a></li>
<li class="fn">9 static public members inherited from <a href="../qtcore/qobject.html#static-public-members">QObject</a></li>
</ul>
<a name="protected-functions"></a>
<h2 id="protected-functions">Protected Functions</h2>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> virtual QString </td><td class="memItemRight bottomAlign"><b><a href="qspinbox.html#textFromValue">textFromValue</a></b>(int <i>value</i>) const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual int </td><td class="memItemRight bottomAlign"><b><a href="qspinbox.html#valueFromText">valueFromText</a></b>(const QString &amp;<i>text</i>) const</td></tr>
</table></div>
<a name="reimplemented-protected-functions"></a>
<h2 id="reimplemented-protected-functions">Reimplemented Protected Functions</h2>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> virtual bool </td><td class="memItemRight bottomAlign"><b><a href="qspinbox.html#event">event</a></b>(QEvent *<i>event</i>) override</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qspinbox.html#fixup">fixup</a></b>(QString &amp;<i>input</i>) const override</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual QValidator::State </td><td class="memItemRight bottomAlign"><b><a href="qspinbox.html#validate">validate</a></b>(QString &amp;<i>text</i>, int &amp;<i>pos</i>) const override</td></tr>
</table></div>
<ul>
<li class="fn">20 protected functions inherited from <a href="qabstractspinbox.html#protected-functions">QAbstractSpinBox</a></li>
<li class="fn">35 protected functions inherited from <a href="qwidget.html#protected-functions">QWidget</a></li>
<li class="fn">9 protected functions inherited from <a href="../qtcore/qobject.html#protected-functions">QObject</a></li>
<li class="fn">1 protected function inherited from <a href="../qtgui/qpaintdevice.html#protected-functions">QPaintDevice</a></li>
</ul>
<h3>Additional Inherited Members</h3>
<ul>
<li class="fn">1 protected slot inherited from <a href="qwidget.html#protected-slots">QWidget</a></li>
</ul>
<a name="details"></a>
<!-- $$$QSpinBox-description -->
<div class="descr">
<h2 id="details">Detailed Description</h2>
<p>The <a href="qspinbox.html">QSpinBox</a> class provides a spin box widget.</p>
<p class="centerAlign"><img src="images/windows-spinbox.png" alt="" /></p><p><a href="qspinbox.html">QSpinBox</a> is designed to handle integers and discrete sets of values (e.g&#x2e;, month names); use <a href="qdoublespinbox.html">QDoubleSpinBox</a> for floating point values.</p>
<p><a href="qspinbox.html">QSpinBox</a> allows the user to choose a value by clicking the up/down buttons or pressing up/down on the keyboard to increase/decrease the value currently displayed. The user can also type the value in manually. The spin box supports integer values but can be extended to use different strings with <a href="qspinbox.html#validate">validate</a>(), <a href="qspinbox.html#textFromValue">textFromValue</a>() and <a href="qspinbox.html#valueFromText">valueFromText</a>().</p>
<p>Every time the value changes <a href="qspinbox.html">QSpinBox</a> emits two <a href="qspinbox.html#valueChanged">valueChanged</a>() signals, one providing an int and the other a <a href="../qtcore/qstring.html">QString</a>. The <a href="../qtcore/qstring.html">QString</a> overload provides the value with both <a href="qspinbox.html#prefix-prop">prefix</a>() and <a href="qspinbox.html#suffix-prop">suffix</a>(). The current value can be fetched with <a href="qspinbox.html#value-prop">value</a>() and set with <a href="qspinbox.html#value-prop">setValue</a>().</p>
<p>Clicking the up/down buttons or using the keyboard accelerator's up and down arrows will increase or decrease the current value in steps of size <a href="qspinbox.html#singleStep-prop">singleStep</a>(). If you want to change this behaviour you can reimplement the virtual function <a href="qabstractspinbox.html#stepBy">stepBy</a>(). The minimum and maximum value and the step size can be set using one of the constructors, and can be changed later with <a href="qspinbox.html#minimum-prop">setMinimum</a>(), <a href="qspinbox.html#maximum-prop">setMaximum</a>() and <a href="qspinbox.html#singleStep-prop">setSingleStep</a>().</p>
<p>Most spin boxes are directional, but <a href="qspinbox.html">QSpinBox</a> can also operate as a circular spin box, i.e&#x2e; if the range is 0-99 and the current value is 99, clicking &quot;up&quot; will give 0 if <a href="qabstractspinbox.html#wrapping-prop">wrapping</a>() is set to true. Use <a href="qabstractspinbox.html#wrapping-prop">setWrapping</a>() if you want circular behavior.</p>
<p>The displayed value can be prepended and appended with arbitrary strings indicating, for example, currency or the unit of measurement. See <a href="qspinbox.html#prefix-prop">setPrefix</a>() and <a href="qspinbox.html#suffix-prop">setSuffix</a>(). The text in the spin box is retrieved with <a href="qabstractspinbox.html#text-prop">text</a>() (which includes any <a href="qspinbox.html#prefix-prop">prefix</a>() and <a href="qspinbox.html#suffix-prop">suffix</a>()), or with <a href="qspinbox.html#cleanText-prop">cleanText</a>() (which has no <a href="qspinbox.html#prefix-prop">prefix</a>(), no <a href="qspinbox.html#suffix-prop">suffix</a>() and no leading or trailing whitespace).</p>
<p>It is often desirable to give the user a special (often default) choice in addition to the range of numeric values. See <a href="qabstractspinbox.html#specialValueText-prop">setSpecialValueText</a>() for how to do this with <a href="qspinbox.html">QSpinBox</a>.</p>
<a name="subclassing-qspinbox"></a>
<h3 id="subclassing-qspinbox">Subclassing QSpinBox</h3>
<p>If using <a href="qspinbox.html#prefix-prop">prefix</a>(), <a href="qspinbox.html#suffix-prop">suffix</a>(), and <a href="qabstractspinbox.html#specialValueText-prop">specialValueText</a>() don't provide enough control, you subclass <a href="qspinbox.html">QSpinBox</a> and reimplement <a href="qspinbox.html#valueFromText">valueFromText</a>() and <a href="qspinbox.html#textFromValue">textFromValue</a>(). For example, here's the code for a custom spin box that allows the user to enter icon sizes (e.g&#x2e;, &quot;32 x 32&quot;):</p>
<pre class="cpp">

  <span class="type">int</span> IconSizeSpinBox<span class="operator">::</span>valueFromText(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&amp;</span>text) <span class="keyword">const</span>
  {
      <span class="keyword">static</span> <span class="keyword">const</span> <span class="type"><a href="../qtcore/qregularexpression.html">QRegularExpression</a></span> regExp(tr(<span class="string">&quot;(\\d+)(\\s*[xx]\\s*\\d+)?&quot;</span>));
      Q_ASSERT(regExp<span class="operator">.</span>isValid());

      <span class="keyword">const</span> <span class="type"><a href="../qtcore/qregularexpressionmatch.html">QRegularExpressionMatch</a></span> match <span class="operator">=</span> regExp<span class="operator">.</span>match(text);
      <span class="keyword">if</span> (match<span class="operator">.</span>isValid())
          <span class="keyword">return</span> match<span class="operator">.</span>captured(<span class="number">1</span>)<span class="operator">.</span>toInt();
      <span class="keyword">return</span> <span class="number">0</span>;
  }

  <span class="type"><a href="../qtcore/qstring.html">QString</a></span> IconSizeSpinBox<span class="operator">::</span>textFromValue(<span class="type">int</span> value) <span class="keyword">const</span>
  {
      <span class="keyword">return</span> tr(<span class="string">&quot;%1 x %1&quot;</span>)<span class="operator">.</span>arg(value);
  }

</pre>
<p>See the <a href="qtwidgets-widgets-icons-example.html">Icons</a> example for the full source code.</p>
</div>
<p><b>See also </b><a href="qdoublespinbox.html">QDoubleSpinBox</a>, <a href="qdatetimeedit.html">QDateTimeEdit</a>, <a href="qslider.html">QSlider</a>, and <a href="qtwidgets-widgets-spinboxes-example.html">Spin Boxes Example</a>.</p>
<!-- @@@QSpinBox -->
<div class="prop">
<h2>Property Documentation</h2>
<!-- $$$cleanText-prop$$$cleanText -->
<h3 class="fn" id="cleanText-prop"><a name="cleanText-prop"></a><span class="name">cleanText</span> : const <span class="type"><a href="../qtcore/qstring.html">QString</a></span></h3>
<p>This property holds the text of the spin box excluding any prefix, suffix, or leading or trailing whitespace.</p>
<p><b>Access functions:</b></p>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft topAlign rightAlign"> QString </td><td class="memItemRight bottomAlign"><span class="name"><b>cleanText</b></span>() const</td></tr>
</table></div>
<p><b>See also </b><a href="qabstractspinbox.html#text-prop">text</a>, <a href="qspinbox.html#prefix-prop">QSpinBox::prefix</a>, and <a href="qspinbox.html#suffix-prop">QSpinBox::suffix</a>.</p>
<!-- @@@cleanText -->
<!-- $$$displayIntegerBase-prop$$$displayIntegerBase$$$setDisplayIntegerBaseint -->
<h3 class="fn" id="displayIntegerBase-prop"><a name="displayIntegerBase-prop"></a><span class="name">displayIntegerBase</span> : <span class="type">int</span></h3>
<p>This property holds the base used to display the value of the spin box</p>
<p>The default displayIntegerBase value is 10.</p>
<p>This property was introduced in  Qt 5.2.</p>
<p><b>Access functions:</b></p>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft topAlign rightAlign"> int </td><td class="memItemRight bottomAlign"><span class="name"><b>displayIntegerBase</b></span>() const</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><span class="name"><b>setDisplayIntegerBase</b></span>(int <i>base</i>)</td></tr>
</table></div>
<p><b>See also </b><a href="qspinbox.html#textFromValue">textFromValue</a>() and <a href="qspinbox.html#valueFromText">valueFromText</a>().</p>
<!-- @@@displayIntegerBase -->
<!-- $$$maximum-prop$$$maximum$$$setMaximumint -->
<h3 class="fn" id="maximum-prop"><a name="maximum-prop"></a><span class="name">maximum</span> : <span class="type">int</span></h3>
<p>This property holds the maximum value of the spin box</p>
<p>When setting this property the minimum is adjusted if necessary, to ensure that the range remains valid.</p>
<p>The default maximum value is 99.</p>
<p><b>Access functions:</b></p>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft topAlign rightAlign"> int </td><td class="memItemRight bottomAlign"><span class="name"><b>maximum</b></span>() const</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><span class="name"><b>setMaximum</b></span>(int <i>max</i>)</td></tr>
</table></div>
<p><b>See also </b><a href="qspinbox.html#setRange">setRange</a>() and <a href="qabstractspinbox.html#specialValueText-prop">specialValueText</a>.</p>
<!-- @@@maximum -->
<!-- $$$minimum-prop$$$minimum$$$setMinimumint -->
<h3 class="fn" id="minimum-prop"><a name="minimum-prop"></a><span class="name">minimum</span> : <span class="type">int</span></h3>
<p>This property holds the minimum value of the spin box</p>
<p>When setting this property the <a href="qspinbox.html#maximum-prop">maximum</a> is adjusted if necessary to ensure that the range remains valid.</p>
<p>The default minimum value is 0.</p>
<p><b>Access functions:</b></p>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft topAlign rightAlign"> int </td><td class="memItemRight bottomAlign"><span class="name"><b>minimum</b></span>() const</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><span class="name"><b>setMinimum</b></span>(int <i>min</i>)</td></tr>
</table></div>
<p><b>See also </b><a href="qspinbox.html#setRange">setRange</a>() and <a href="qabstractspinbox.html#specialValueText-prop">specialValueText</a>.</p>
<!-- @@@minimum -->
<!-- $$$prefix-prop$$$prefix$$$setPrefixconstQString& -->
<h3 class="fn" id="prefix-prop"><a name="prefix-prop"></a><span class="name">prefix</span> : <span class="type"><a href="../qtcore/qstring.html">QString</a></span></h3>
<p>This property holds the spin box's prefix</p>
<p>The prefix is prepended to the start of the displayed value. Typical use is to display a unit of measurement or a currency symbol. For example:</p>
<pre class="cpp">

  sb<span class="operator">-</span><span class="operator">&gt;</span>setPrefix(<span class="string">&quot;$&quot;</span>);

</pre>
<p>To turn off the prefix display, set this property to an empty string. The default is no prefix. The prefix is not displayed when <a href="qspinbox.html#value-prop">value</a>() == <a href="qspinbox.html#minimum-prop">minimum</a>() and <a href="qabstractspinbox.html#specialValueText-prop">specialValueText</a>() is set.</p>
<p>If no prefix is set, prefix() returns an empty string.</p>
<p><b>Access functions:</b></p>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft topAlign rightAlign"> QString </td><td class="memItemRight bottomAlign"><span class="name"><b>prefix</b></span>() const</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><span class="name"><b>setPrefix</b></span>(const QString &amp;<i>prefix</i>)</td></tr>
</table></div>
<p><b>See also </b><a href="qspinbox.html#suffix-prop">suffix</a>(), <a href="qspinbox.html#suffix-prop">setSuffix</a>(), <a href="qabstractspinbox.html#specialValueText-prop">specialValueText</a>(), and <a href="qabstractspinbox.html#specialValueText-prop">setSpecialValueText</a>().</p>
<!-- @@@prefix -->
<!-- $$$singleStep-prop$$$singleStep$$$setSingleStepint -->
<h3 class="fn" id="singleStep-prop"><a name="singleStep-prop"></a><span class="name">singleStep</span> : <span class="type">int</span></h3>
<p>This property holds the step value</p>
<p>When the user uses the arrows to change the spin box's value the value will be incremented/decremented by the amount of the singleStep. The default value is 1. Setting a singleStep value of less than 0 does nothing.</p>
<p><b>Access functions:</b></p>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft topAlign rightAlign"> int </td><td class="memItemRight bottomAlign"><span class="name"><b>singleStep</b></span>() const</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><span class="name"><b>setSingleStep</b></span>(int <i>val</i>)</td></tr>
</table></div>
<!-- @@@singleStep -->
<!-- $$$stepType-prop$$$stepType$$$setStepTypeQAbstractSpinBox::StepType -->
<h3 class="fn" id="stepType-prop"><a name="stepType-prop"></a><span class="name">stepType</span> : <span class="type"><a href="qabstractspinbox.html#StepType-enum">StepType</a></span></h3>
<p>This property holds the step type.</p>
<p>The step type can be single step or adaptive decimal step.</p>
<p><b>Access functions:</b></p>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft topAlign rightAlign"> QAbstractSpinBox::StepType </td><td class="memItemRight bottomAlign"><span class="name"><b>stepType</b></span>() const</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><span class="name"><b><a href="qspinbox.html#setStepType">setStepType</a></b></span>(QAbstractSpinBox::StepType <i>stepType</i>)</td></tr>
</table></div>
<!-- @@@stepType -->
<!-- $$$suffix-prop$$$suffix$$$setSuffixconstQString& -->
<h3 class="fn" id="suffix-prop"><a name="suffix-prop"></a><span class="name">suffix</span> : <span class="type"><a href="../qtcore/qstring.html">QString</a></span></h3>
<p>This property holds the suffix of the spin box</p>
<p>The suffix is appended to the end of the displayed value. Typical use is to display a unit of measurement or a currency symbol. For example:</p>
<pre class="cpp">

  sb<span class="operator">-</span><span class="operator">&gt;</span>setSuffix(<span class="string">&quot; km&quot;</span>);

</pre>
<p>To turn off the suffix display, set this property to an empty string. The default is no suffix. The suffix is not displayed for the <a href="qspinbox.html#minimum-prop">minimum</a>() if <a href="qabstractspinbox.html#specialValueText-prop">specialValueText</a>() is set.</p>
<p>If no suffix is set, suffix() returns an empty string.</p>
<p><b>Access functions:</b></p>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft topAlign rightAlign"> QString </td><td class="memItemRight bottomAlign"><span class="name"><b>suffix</b></span>() const</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><span class="name"><b>setSuffix</b></span>(const QString &amp;<i>suffix</i>)</td></tr>
</table></div>
<p><b>See also </b><a href="qspinbox.html#prefix-prop">prefix</a>(), <a href="qspinbox.html#prefix-prop">setPrefix</a>(), <a href="qabstractspinbox.html#specialValueText-prop">specialValueText</a>(), and <a href="qabstractspinbox.html#specialValueText-prop">setSpecialValueText</a>().</p>
<!-- @@@suffix -->
<!-- $$$value-prop$$$value$$$setValueint$$$valueChangedint$$$valueChangedconstQString& -->
<h3 class="fn" id="value-prop"><a name="value-prop"></a><span class="name">value</span> : <span class="type">int</span></h3>
<p>This property holds the value of the spin box</p>
<p>setValue() will emit <a href="qspinbox.html#valueChanged">valueChanged</a>() if the new value is different from the old one. The value property has a second notifier signal which includes the spin box's prefix and suffix.</p>
<p><b>Access functions:</b></p>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft topAlign rightAlign"> int </td><td class="memItemRight bottomAlign"><span class="name"><b>value</b></span>() const</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><span class="name"><b>setValue</b></span>(int <i>val</i>)</td></tr>
</table></div>
<p><b>Notifier signal:</b></p>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><span class="name"><b><a href="qspinbox.html#valueChanged">valueChanged</a></b></span>(int <i>i</i>)</td></tr>
<tr><td class="memItemLeft topAlign rightAlign"> void </td><td class="memItemRight bottomAlign"><span class="name"><b><a href="qspinbox.html#valueChanged-1">valueChanged</a></b></span>(const QString &amp;<i>text</i>)</td></tr>
</table></div>
<!-- @@@value -->
</div>
<div class="func">
<h2>Member Function Documentation</h2>
<!-- $$$QSpinBox[overload1]$$$QSpinBoxQWidget* -->
<h3 class="fn" id="QSpinBox"><a name="QSpinBox"></a>QSpinBox::<span class="name">QSpinBox</span>(<span class="type"><a href="qwidget.html#QWidget">QWidget</a></span> *<i>parent</i> = nullptr)</h3>
<p>Constructs a spin box with 0 as minimum value and 99 as maximum value, a step value of 1. The value is initially set to 0. It is parented to <i>parent</i>.</p>
<p><b>See also </b><a href="qspinbox.html#minimum-prop">setMinimum</a>(), <a href="qspinbox.html#maximum-prop">setMaximum</a>(), and <a href="qspinbox.html#singleStep-prop">setSingleStep</a>().</p>
<!-- @@@QSpinBox -->
<!-- $$$~QSpinBox[overload1]$$$~QSpinBox -->
<h3 class="fn" id="dtor.QSpinBox"><a name="dtor.QSpinBox"></a><code>[virtual] </code>QSpinBox::<span class="name">~QSpinBox</span>()</h3>
<p>Destructor.</p>
<!-- @@@~QSpinBox -->
<!-- $$$event[overload1]$$$eventQEvent* -->
<h3 class="fn" id="event"><a name="event"></a><code>[override virtual protected] </code><span class="type">bool</span> QSpinBox::<span class="name">event</span>(<span class="type"><a href="../qtcore/qevent.html">QEvent</a></span> *<i>event</i>)</h3>
<p>Reimplemented from <a href="qabstractspinbox.html#event">QAbstractSpinBox::event</a>().</p>
<!-- @@@event -->
<!-- $$$fixup[overload1]$$$fixupQString& -->
<h3 class="fn" id="fixup"><a name="fixup"></a><code>[override virtual protected] </code><span class="type">void</span> QSpinBox::<span class="name">fixup</span>(<span class="type"><a href="../qtcore/qstring.html">QString</a></span> &amp;<i>input</i>) const</h3>
<p>Reimplemented from <a href="qabstractspinbox.html#fixup">QAbstractSpinBox::fixup</a>().</p>
<!-- @@@fixup -->
<!-- $$$setRange[overload1]$$$setRangeintint -->
<h3 class="fn" id="setRange"><a name="setRange"></a><span class="type">void</span> QSpinBox::<span class="name">setRange</span>(<span class="type">int</span> <i>minimum</i>, <span class="type">int</span> <i>maximum</i>)</h3>
<p>Convenience function to set the <i>minimum</i>, and <i>maximum</i> values with a single function call.</p>
<pre class="cpp">

  setRange(minimum<span class="operator">,</span> maximum);

</pre>
<p>is equivalent to:</p>
<pre class="cpp">

  setMinimum(minimum);
  setMaximum(maximum);

</pre>
<p><b>See also </b><a href="qspinbox.html#minimum-prop">minimum</a> and <a href="qspinbox.html#maximum-prop">maximum</a>.</p>
<!-- @@@setRange -->
<!-- $$$setStepType -->
<h3 class="fn" id="setStepType"><a name="setStepType"></a><span class="type">void</span> QSpinBox::<span class="name">setStepType</span>(<span class="type"><a href="qabstractspinbox.html#StepType-enum">QAbstractSpinBox::StepType</a></span> <i>stepType</i>)</h3>
<p>Sets the step type for the spin box to <i>stepType</i>, which is single step or adaptive decimal step.</p>
<p>Adaptive decimal step means that the step size will continuously be adjusted to one power of ten below the current <a href="qspinbox.html#value-prop">value</a>. So when the value is 1100, the step is set to 100, so stepping up once increases it to 1200. For 1200 stepping up takes it to 1300. For negative values, stepping down from -1100 goes to -1200.</p>
<p>Step direction is taken into account to handle edges cases, so that stepping down from 100 takes the value to 99 instead of 90. Thus a step up followed by a step down -- or vice versa -- always lands on the starting value; 99 -&gt; 100 -&gt; 99.</p>
<p>Setting this will cause the spin box to disregard the value of <a href="qspinbox.html#singleStep-prop">singleStep</a>, although it is preserved so that <a href="qspinbox.html#singleStep-prop">singleStep</a> comes into effect if adaptive decimal step is later turned off.</p>
<p>This function was introduced in  Qt 5.12.</p>
<p><b>Note:</b> Setter function for property <a href="qspinbox.html#stepType-prop">stepType</a>. </p><p><b>See also </b><a href="qspinbox.html#stepType-prop">stepType</a>().</p>
<!-- @@@setStepType -->
<!-- $$$textFromValue[overload1]$$$textFromValueint -->
<h3 class="fn" id="textFromValue"><a name="textFromValue"></a><code>[virtual protected] </code><span class="type"><a href="../qtcore/qstring.html">QString</a></span> QSpinBox::<span class="name">textFromValue</span>(<span class="type">int</span> <i>value</i>) const</h3>
<p>This virtual function is used by the spin box whenever it needs to display the given <i>value</i>. The default implementation returns a string containing <i>value</i> printed in the standard way using <a href="qwidget.html#locale-prop">QWidget::locale</a>().toString(), but with the thousand separator removed unless <a href="qabstractspinbox.html#showGroupSeparator-prop">setGroupSeparatorShown</a>() is set. Reimplementations may return anything. (See the example in the detailed description.)</p>
<p>Note: <a href="qspinbox.html">QSpinBox</a> does not call this function for <a href="qabstractspinbox.html#specialValueText-prop">specialValueText</a>() and that neither <a href="qspinbox.html#prefix-prop">prefix</a>() nor <a href="qspinbox.html#suffix-prop">suffix</a>() should be included in the return value.</p>
<p>If you reimplement this, you may also need to reimplement <a href="qspinbox.html#valueFromText">valueFromText</a>() and <a href="qspinbox.html#validate">validate</a>()</p>
<p><b>See also </b><a href="qspinbox.html#valueFromText">valueFromText</a>(), <a href="qspinbox.html#validate">validate</a>(), and <a href="../qtcore/qlocale.html#groupSeparator">QLocale::groupSeparator</a>().</p>
<!-- @@@textFromValue -->
<!-- $$$validate[overload1]$$$validateQString&int& -->
<h3 class="fn" id="validate"><a name="validate"></a><code>[override virtual protected] </code><span class="type"><a href="../qtgui/qvalidator.html#State-enum">QValidator::State</a></span> QSpinBox::<span class="name">validate</span>(<span class="type"><a href="../qtcore/qstring.html">QString</a></span> &amp;<i>text</i>, <span class="type">int</span> &amp;<i>pos</i>) const</h3>
<p>Reimplemented from <a href="qabstractspinbox.html#validate">QAbstractSpinBox::validate</a>().</p>
<!-- @@@validate -->
<!-- $$$valueChanged -->
<h3 class="fn" id="valueChanged"><a name="valueChanged"></a><code>[signal] </code><span class="type">void</span> QSpinBox::<span class="name">valueChanged</span>(<span class="type">int</span> <i>i</i>)</h3>
<p>This signal is emitted whenever the spin box's value is changed. The new value's integer value is passed in <i>i</i>.</p>
<p><b>Note:</b> Signal <i>valueChanged</i> is overloaded in this class. To connect to this signal by using the function pointer syntax, Qt provides a convenient helper for obtaining the function pointer as shown in this example:<pre class="cpp">

  connect(spinBox<span class="operator">,</span> <span class="type">QOverload</span><span class="operator">&lt;</span><span class="type">int</span><span class="operator">&gt;</span><span class="operator">::</span>of(<span class="operator">&amp;</span><span class="type"><a href="qspinbox.html#QSpinBox">QSpinBox</a></span><span class="operator">::</span>valueChanged)<span class="operator">,</span>
      <span class="operator">[</span><span class="operator">=</span><span class="operator">]</span>(<span class="type">int</span> i){ <span class="comment">/* ... */</span> });

</pre>
<p><b>Note:</b> Notifier signal for property <a href="qspinbox.html#value-prop">value</a>. </p><!-- @@@valueChanged -->
<!-- $$$valueChanged -->
<h3 class="fn" id="valueChanged-1"><a name="valueChanged-1"></a><code>[signal] </code><span class="type">void</span> QSpinBox::<span class="name">valueChanged</span>(const <span class="type"><a href="../qtcore/qstring.html">QString</a></span> &amp;<i>text</i>)</h3>
<p>This is an overloaded function.</p>
<p>The new value is passed in <i>text</i> with <a href="qspinbox.html#prefix-prop">prefix</a>() and <a href="qspinbox.html#suffix-prop">suffix</a>().</p>
<p><b>Note:</b> Signal <i>valueChanged</i> is overloaded in this class. To connect to this signal by using the function pointer syntax, Qt provides a convenient helper for obtaining the function pointer as shown in this example:<pre class="cpp">

  connect(spinBox<span class="operator">,</span> <span class="type">QOverload</span><span class="operator">&lt;</span><span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&amp;</span><span class="operator">&gt;</span><span class="operator">::</span>of(<span class="operator">&amp;</span><span class="type"><a href="qspinbox.html#QSpinBox">QSpinBox</a></span><span class="operator">::</span>valueChanged)<span class="operator">,</span>
      <span class="operator">[</span><span class="operator">=</span><span class="operator">]</span>(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&amp;</span>text){ <span class="comment">/* ... */</span> });

</pre>
<p><b>Note:</b> Notifier signal for property <a href="qspinbox.html#value-prop">value</a>. </p><!-- @@@valueChanged -->
<!-- $$$valueFromText[overload1]$$$valueFromTextconstQString& -->
<h3 class="fn" id="valueFromText"><a name="valueFromText"></a><code>[virtual protected] </code><span class="type">int</span> QSpinBox::<span class="name">valueFromText</span>(const <span class="type"><a href="../qtcore/qstring.html">QString</a></span> &amp;<i>text</i>) const</h3>
<p>This virtual function is used by the spin box whenever it needs to interpret <i>text</i> entered by the user as a value.</p>
<p>Subclasses that need to display spin box values in a non-numeric way need to reimplement this function.</p>
<p>Note: <a href="qspinbox.html">QSpinBox</a> handles <a href="qabstractspinbox.html#specialValueText-prop">specialValueText</a>() separately; this function is only concerned with the other values.</p>
<p><b>See also </b><a href="qspinbox.html#textFromValue">textFromValue</a>() and <a href="qspinbox.html#validate">validate</a>().</p>
<!-- @@@valueFromText -->
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   their respective owners.<br/>    The documentation provided herein is licensed under the terms of the    <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation    License version 1.3</a> as published by the Free Software Foundation.<br/>    Qt and respective logos are trademarks of The Qt Company Ltd.     in Finland and/or other countries worldwide. All other trademarks are property
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