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<a href="#AtkValue.description" class="shortcut">Description</a>
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<a href="#AtkValue.object-hierarchy" class="shortcut">Object Hierarchy</a>
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<a href="#AtkValue.implementations" class="shortcut">Known Implementations</a>
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<h2><span class="refentrytitle"><a name="AtkValue.top_of_page"></a>AtkValue</span></h2>
<p>AtkValue — The ATK interface implemented by valuators and
components which display or select a value from a bounded range of
values.</p>
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<div class="refsynopsisdiv">
<a name="AtkValue.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis"> <a class="link" href="AtkValue.html#AtkValue-struct" title="AtkValue">AtkValue</a>;
<span class="returnvalue">void</span> <a class="link" href="AtkValue.html#atk-value-get-current-value" title="atk_value_get_current_value ()">atk_value_get_current_value</a> (<em class="parameter"><code><a class="link" href="AtkValue.html" title="AtkValue"><span class="type">AtkValue</span></a> *obj</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);
<span class="returnvalue">void</span> <a class="link" href="AtkValue.html#atk-value-get-maximum-value" title="atk_value_get_maximum_value ()">atk_value_get_maximum_value</a> (<em class="parameter"><code><a class="link" href="AtkValue.html" title="AtkValue"><span class="type">AtkValue</span></a> *obj</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);
<span class="returnvalue">void</span> <a class="link" href="AtkValue.html#atk-value-get-minimum-value" title="atk_value_get_minimum_value ()">atk_value_get_minimum_value</a> (<em class="parameter"><code><a class="link" href="AtkValue.html" title="AtkValue"><span class="type">AtkValue</span></a> *obj</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="AtkValue.html#atk-value-set-current-value" title="atk_value_set_current_value ()">atk_value_set_current_value</a> (<em class="parameter"><code><a class="link" href="AtkValue.html" title="AtkValue"><span class="type">AtkValue</span></a> *obj</code></em>,
<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);
<span class="returnvalue">void</span> <a class="link" href="AtkValue.html#atk-value-get-minimum-increment" title="atk_value_get_minimum_increment ()">atk_value_get_minimum_increment</a> (<em class="parameter"><code><a class="link" href="AtkValue.html" title="AtkValue"><span class="type">AtkValue</span></a> *obj</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);
</pre>
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<div class="refsect1">
<a name="AtkValue.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="synopsis">
GInterface
+----AtkValue
</pre>
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<div class="refsect1">
<a name="AtkValue.implementations"></a><h2>Known Implementations</h2>
<p>
AtkValue is implemented by
<a class="link" href="AtkNoOpObject.html" title="AtkNoOpObject">AtkNoOpObject</a>.</p>
</div>
<div class="refsect1">
<a name="AtkValue.description"></a><h2>Description</h2>
<p>
<a class="link" href="AtkValue.html" title="AtkValue"><span class="type">AtkValue</span></a> should be implemented for components which either display
a value from a bounded range, or which allow the user to specify a
value from a bounded range, or both. For instance, most sliders
and range controls, as well as dials, should have <a class="link" href="AtkObject.html" title="AtkObject"><span class="type">AtkObject</span></a>
representations which implement <a class="link" href="AtkValue.html" title="AtkValue"><span class="type">AtkValue</span></a> on the component's
behalf. <span class="type">AtKValues</span> may be read-only, in which case attempts to
alter the value return FALSE to indicate failure.
</p>
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<div class="refsect1">
<a name="AtkValue.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="AtkValue-struct"></a><h3>AtkValue</h3>
<pre class="programlisting">typedef struct _AtkValue AtkValue;</pre>
<p>
</p>
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<hr>
<div class="refsect2">
<a name="atk-value-get-current-value"></a><h3>atk_value_get_current_value ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> atk_value_get_current_value (<em class="parameter"><code><a class="link" href="AtkValue.html" title="AtkValue"><span class="type">AtkValue</span></a> *obj</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre>
<p>
Gets the value of this object.
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<td><p><span class="term"><em class="parameter"><code>obj</code></em> :</span></p></td>
<td>a GObject instance that implements AtkValueIface</td>
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<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a <a href="/usr/share/gtk-doc/html/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> representing the current accessible value</td>
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<div class="refsect2">
<a name="atk-value-get-maximum-value"></a><h3>atk_value_get_maximum_value ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> atk_value_get_maximum_value (<em class="parameter"><code><a class="link" href="AtkValue.html" title="AtkValue"><span class="type">AtkValue</span></a> *obj</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre>
<p>
Gets the maximum value of this object.
</p>
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<td><p><span class="term"><em class="parameter"><code>obj</code></em> :</span></p></td>
<td>a GObject instance that implements AtkValueIface</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a <a href="/usr/share/gtk-doc/html/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> representing the maximum accessible value</td>
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<hr>
<div class="refsect2">
<a name="atk-value-get-minimum-value"></a><h3>atk_value_get_minimum_value ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> atk_value_get_minimum_value (<em class="parameter"><code><a class="link" href="AtkValue.html" title="AtkValue"><span class="type">AtkValue</span></a> *obj</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre>
<p>
Gets the minimum value of this object.
</p>
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<td><p><span class="term"><em class="parameter"><code>obj</code></em> :</span></p></td>
<td>a GObject instance that implements AtkValueIface</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a <a href="/usr/share/gtk-doc/html/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> representing the minimum accessible value</td>
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<hr>
<div class="refsect2">
<a name="atk-value-set-current-value"></a><h3>atk_value_set_current_value ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> atk_value_set_current_value (<em class="parameter"><code><a class="link" href="AtkValue.html" title="AtkValue"><span class="type">AtkValue</span></a> *obj</code></em>,
<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre>
<p>
Sets the value of this object.
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<td><p><span class="term"><em class="parameter"><code>obj</code></em> :</span></p></td>
<td>a GObject instance that implements AtkValueIface</td>
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<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a <a href="/usr/share/gtk-doc/html/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> which is the desired new accessible value.</td>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if new value is successfully set, <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</td>
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<hr>
<div class="refsect2">
<a name="atk-value-get-minimum-increment"></a><h3>atk_value_get_minimum_increment ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> atk_value_get_minimum_increment (<em class="parameter"><code><a class="link" href="AtkValue.html" title="AtkValue"><span class="type">AtkValue</span></a> *obj</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre>
<p>
Gets the minimum increment by which the value of this object may be changed. If zero,
the minimum increment is undefined, which may mean that it is limited only by the
floating point precision of the platform.
</p>
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<td><p><span class="term"><em class="parameter"><code>obj</code></em> :</span></p></td>
<td>a GObject instance that implements AtkValueIface</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a <a href="/usr/share/gtk-doc/html/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> representing the minimum increment by which the accessible value may be changed</td>
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</table></div>
<p class="since">Since 1.12</p>
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