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<td >Qt 5.9</td><td ><a href="qtgui-index.html">Qt GUI</a></td><td ><a href="qtgui-module.html">C++ Classes</a></td><td >QAccessibleValueInterface</td></tr></table><table class="buildversion"><tr>
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<h3><a name="toc">Contents</a></h3>
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<li class="level1"><a href="#public-functions">Public Functions</a></li>
<li class="level1"><a href="#details">Detailed Description</a></li>
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<h1 class="title">QAccessibleValueInterface Class</h1>
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<p>The <a href="qaccessiblevalueinterface.html">QAccessibleValueInterface</a> class implements support for objects that manipulate a value. <a href="#details">More...</a></p>
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<tr><td class="memItemLeft rightAlign topAlign"> Header:</td><td class="memItemRight bottomAlign">   <span class="preprocessor">#include &lt;QAccessibleValueInterface&gt;</span>
</td></tr><tr><td class="memItemLeft rightAlign topAlign"> qmake:</td><td class="memItemRight bottomAlign"> QT += gui</td></tr></table></div><ul>
<li><a href="qaccessiblevalueinterface-members.html">List of all members, including inherited members</a></li>
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<h2 id="public-functions">Public Functions</h2>
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<tr><td class="memItemLeft rightAlign topAlign"> virtual </td><td class="memItemRight bottomAlign"><b><a href="qaccessiblevalueinterface.html#dtor.QAccessibleValueInterface">~QAccessibleValueInterface</a></b>()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual QVariant </td><td class="memItemRight bottomAlign"><b><a href="qaccessiblevalueinterface.html#currentValue">currentValue</a></b>() const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual QVariant </td><td class="memItemRight bottomAlign"><b><a href="qaccessiblevalueinterface.html#maximumValue">maximumValue</a></b>() const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual QVariant </td><td class="memItemRight bottomAlign"><b><a href="qaccessiblevalueinterface.html#minimumStepSize">minimumStepSize</a></b>() const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual QVariant </td><td class="memItemRight bottomAlign"><b><a href="qaccessiblevalueinterface.html#minimumValue">minimumValue</a></b>() const = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qaccessiblevalueinterface.html#setCurrentValue">setCurrentValue</a></b>(const QVariant &amp;<i>value</i>) = 0</td></tr>
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<h2 id="details">Detailed Description</h2>
<p>The <a href="qaccessiblevalueinterface.html">QAccessibleValueInterface</a> class implements support for objects that manipulate a value.</p>
<p>This interface should be implemented by accessible objects that represent a value. Examples are spinner, slider, dial and scroll bar.</p>
<p>Instead of forcing the user to deal with the individual parts of the widgets, this interface gives an easier approach to the kind of widget it represents.</p>
<p>Usually this interface is implemented by classes that also implement <a href="qaccessibleinterface.html">QAccessibleInterface</a>.</p>
<p><a href="http://www.linux-foundation.org/en/Accessibility/IAccessible2">IAccessible2 Specification</a></p>
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<h2>Member Function Documentation</h2>
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<h3 class="fn" id="dtor.QAccessibleValueInterface"><a name="dtor.QAccessibleValueInterface"></a><code>[virtual] </code>QAccessibleValueInterface::<span class="name">~QAccessibleValueInterface</span>()</h3>
<p>Destroys the <a href="qaccessiblevalueinterface.html">QAccessibleValueInterface</a>.</p>
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<h3 class="fn" id="currentValue"><a name="currentValue"></a><code>[pure virtual] </code><span class="type"><a href="../qtcore/qvariant.html">QVariant</a></span> QAccessibleValueInterface::<span class="name">currentValue</span>() const</h3>
<p>Returns the current value of the widget. This is usually a double or int.</p>
<p><b>See also </b><a href="qaccessiblevalueinterface.html#setCurrentValue">setCurrentValue</a>().</p>
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<h3 class="fn" id="maximumValue"><a name="maximumValue"></a><code>[pure virtual] </code><span class="type"><a href="../qtcore/qvariant.html">QVariant</a></span> QAccessibleValueInterface::<span class="name">maximumValue</span>() const</h3>
<p>Returns the maximum value this object accepts.</p>
<p><b>See also </b><a href="qaccessiblevalueinterface.html#minimumValue">minimumValue</a>() and <a href="qaccessiblevalueinterface.html#currentValue">currentValue</a>().</p>
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<h3 class="fn" id="minimumStepSize"><a name="minimumStepSize"></a><code>[pure virtual] </code><span class="type"><a href="../qtcore/qvariant.html">QVariant</a></span> QAccessibleValueInterface::<span class="name">minimumStepSize</span>() const</h3>
<p>Returns the minimum step size for the accessible. This is the smalles increment that makes sense when changing the value. When programatically changing the value it should always be a multiple of the minimum step size.</p>
<p>Some tools use this value even when the <a href="qaccessiblevalueinterface.html#setCurrentValue">setCurrentValue</a> does not perform any action. Progress bars for example are read-only but should return their range divided by 100.</p>
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<h3 class="fn" id="minimumValue"><a name="minimumValue"></a><code>[pure virtual] </code><span class="type"><a href="../qtcore/qvariant.html">QVariant</a></span> QAccessibleValueInterface::<span class="name">minimumValue</span>() const</h3>
<p>Returns the minimum value this object accepts.</p>
<p><b>See also </b><a href="qaccessiblevalueinterface.html#maximumValue">maximumValue</a>() and <a href="qaccessiblevalueinterface.html#currentValue">currentValue</a>().</p>
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<h3 class="fn" id="setCurrentValue"><a name="setCurrentValue"></a><code>[pure virtual] </code><span class="type">void</span> QAccessibleValueInterface::<span class="name">setCurrentValue</span>(const <span class="type"><a href="../qtcore/qvariant.html">QVariant</a></span> &amp;<i>value</i>)</h3>
<p>Sets the <i>value</i>. If the desired <i>value</i> is out of the range of permissible values, this call will be ignored.</p>
<p><b>See also </b><a href="qaccessiblevalueinterface.html#currentValue">currentValue</a>(), <a href="qaccessiblevalueinterface.html#minimumValue">minimumValue</a>(), and <a href="qaccessiblevalueinterface.html#maximumValue">maximumValue</a>().</p>
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