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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type"><title>AtkValue</title><meta name="generator" content="DocBook XSL Stylesheets V1.48"><meta name="generator" content="GTK-Doc V1.1 (XML mode)"><style type="text/css"> .synopsis, .classsynopsis { background: #eeeeee; border: solid 1px #aaaaaa; padding: 0.5em; } .programlisting { background: #eeeeff; border: solid 1px #aaaaff; padding: 0.5em; } .variablelist { padding: 4px; margin-left: 3em; } .navigation { background: #ffeeee; border: solid 1px #ffaaaa; margin-top: 0.5em; margin-bottom: 0.5em; } .navigation a { color: #770000; } .navigation a:visited { color: #550000; } .navigation .title { font-size: 200%; } </style><link rel="home" href="index.html" title="ATK Library Reference Manual"><link rel="up" href="atk.html" title="ATK Library"><link rel="previous" href="AtkUtil.html" title="AtkUtil"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><table class="navigation" width="100%" summary="Navigation header" cellpadding="2" cellspacing="2"><tr valign="middle"><td><a accesskey="p" href="AtkUtil.html"><img src="left.png" width="24" height="24" border="0" alt="Prev"></a></td><td><a accesskey="u" href="atk.html"><img src="up.png" width="24" height="24" border="0" alt="Up"></a></td><td><a accesskey="h" href="index.html"><img src="home.png" width="24" height="24" border="0" alt="Home"></a></td><th width="100%" align="center">ATK Library Reference Manual</th></tr></table><div class="refentry"><a name="AtkValue"></a><div class="titlepage"></div><div class="refnamediv"><h2>AtkValue</h2><p>AtkValue — The ATK interface implemented by valuators and components which display orselect a value from a bounded range of values.</p></div><div class="refsynopsisdiv"><h2><h1 class="title"><a name="id310624"></a>Synopsis</h1></h2><pre class="synopsis">struct <a href="AtkValue.html#AtkValue-struct">AtkValue</a>;void <a href="AtkValue.html#atk-value-get-current-value">atk_value_get_current_value</a> (<a href="AtkValue.html" title="AtkValue">AtkValue</a> *obj, GValue *value);void <a href="AtkValue.html#atk-value-get-maximum-value">atk_value_get_maximum_value</a> (<a href="AtkValue.html" title="AtkValue">AtkValue</a> *obj, GValue *value);void <a href="AtkValue.html#atk-value-get-minimum-value">atk_value_get_minimum_value</a> (<a href="AtkValue.html" title="AtkValue">AtkValue</a> *obj, GValue *value);gboolean <a href="AtkValue.html#atk-value-set-current-value">atk_value_set_current_value</a> (<a href="AtkValue.html" title="AtkValue">AtkValue</a> *obj, const GValue *value);</pre></div><div class="refsect1"><h2>Object Hierarchy</h2><pre class="synopsis"> GInterface +----AtkValue</pre></div><div class="refsect1"><h2>Known Implementations</h2><p>AtkValue is implemented by <a href="AtkNoOpObject.html" title="AtkNoOpObject">AtkNoOpObject</a>.</p></div><div class="refsect1"><h2>Description</h2><p><a href="AtkValue.html" title="AtkValue">AtkValue</a> should be implemented for components which either display avalue from a bounded range, or which allow the user to specify a valuefrom a bounded range, or both. For instance, most sliders and rangecontrols, as well as dials, should have <a href="AtkObject.html" title="AtkObject">AtkObject</a> representations whichimplement <a href="AtkValue.html" title="AtkValue">AtkValue</a> on the component's behalf. AtKValues may beread-only, in which case attempts to alter the value return FALSE toindicate failure.</p></div><div class="refsect1"><h2>Details</h2><div class="refsect2"><h3><a name="AtkValue-struct"></a>struct AtkValue</h3><a class="indexterm" name="id313107"></a><pre class="programlisting">struct AtkValue;</pre><p>The AtkValue structure does not contain any fields.</p></div><hr><div class="refsect2"><h3><a name="atk-value-get-current-value"></a>atk_value_get_current_value ()</h3><a class="indexterm" name="id313134"></a><pre class="programlisting">void atk_value_get_current_value (<a href="AtkValue.html" title="AtkValue">AtkValue</a> *obj, GValue *value);</pre><p>Gets the value of this object.</p><p></p><div class="variablelist"><table border="0"><col align="left"><tbody><tr><td><span class="term"><i><tt>obj</tt></i>⌨️ 快捷键说明
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