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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"><title>GtkHScale</title><meta name="generator" content="DocBook XSL Stylesheets V1.73.2"><link rel="start" href="index.html" title="GTK+ Reference Manual"><link rel="up" href="NumericEntry.html" title="Numeric/Text Data Entry"><link rel="prev" href="GtkEntryCompletion.html" title="GtkEntryCompletion"><link rel="next" href="GtkVScale.html" title="GtkVScale"><meta name="generator" content="GTK-Doc V1.9 (XML mode)"><link rel="stylesheet" href="style.css" type="text/css"><link rel="part" href="gtk.html" title="Part I. GTK+ Overview"><link rel="part" href="gtkbase.html" title="Part II. GTK+ Core Reference"><link rel="part" href="gtkobjects.html" title="Part III. GTK+ Widgets and Objects"><link rel="chapter" href="ch01.html" title="Object Hierarchy"><link rel="chapter" href="ch02.html" title="Widget Gallery"><link rel="chapter" 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href="glossary.html" title="Glossary"><link rel="index" href="ix01.html" title="Index"><link rel="index" href="ix02.html" title="Index of deprecated symbols"><link rel="index" href="ix03.html" title="Index of new symbols in 2.2"><link rel="index" href="ix04.html" title="Index of new symbols in 2.4"><link rel="index" href="ix05.html" title="Index of new symbols in 2.6"><link rel="index" href="ix06.html" title="Index of new symbols in 2.8"><link rel="index" href="ix07.html" title="Index of new symbols in 2.10"><link rel="index" href="ix08.html" title="Index of new symbols in 2.12"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="2"><tr valign="middle"><td><a accesskey="p" href="GtkEntryCompletion.html"><img src="left.png" width="24" height="24" border="0" alt="Prev"></a></td><td><a accesskey="u" href="NumericEntry.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">GTK+ Reference Manual</th><td><a accesskey="n" href="GtkVScale.html"><img src="right.png" width="24" height="24" border="0" alt="Next"></a></td></tr><tr><td colspan="5" class="shortcuts"><nobr><a href="#id3543590" class="shortcut">Top</a>  |  <a href="#id3543764" class="shortcut">Description</a>  |  <a href="#id3543673" class="shortcut">Object Hierarchy</a>  |  <a href="#id3543734" class="shortcut">Implemented Interfaces</a></nobr></td></tr></table><div class="refentry" lang="en"><a name="GtkHScale"></a><div class="titlepage"></div><div class="refnamediv"><table width="100%"><tr><td valign="top"><h2><a name="id3543590"></a><span class="refentrytitle">GtkHScale</span></h2><p>GtkHScale — A horizontal slider widget for selecting a value from a range</p></td><td valign="top" align="right"></td></tr></table></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="synopsis">#include <gtk/gtk.h> <a class="link" href="GtkHScale.html#GtkHScale-struct">GtkHScale</a>;<a class="link" href="GtkWidget.html" title="GtkWidget">GtkWidget</a>* <a class="link" href="GtkHScale.html#gtk-hscale-new">gtk_hscale_new</a> (<a class="link" href="GtkAdjustment.html" title="GtkAdjustment">GtkAdjustment</a> *adjustment);<a class="link" href="GtkWidget.html" title="GtkWidget">GtkWidget</a>* <a class="link" href="GtkHScale.html#gtk-hscale-new-with-range">gtk_hscale_new_with_range</a> (<ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble">gdouble</a> min, <ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble">gdouble</a> max, <ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble">gdouble</a> step);</pre></div><div class="refsect1" lang="en"><a name="id3543673"></a><h2>Object Hierarchy</h2><pre class="synopsis"> <ahref="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject">GObject</a> +----<ahref="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a> +----<a class="link" href="GtkObject.html" title="GtkObject">GtkObject</a> +----<a class="link" href="GtkWidget.html" title="GtkWidget">GtkWidget</a> +----<a class="link" href="GtkRange.html" title="GtkRange">GtkRange</a> +----<a class="link" href="GtkScale.html" title="GtkScale">GtkScale</a> +----GtkHScale</pre></div><div class="refsect1" lang="en"><a name="id3543734"></a><h2>Implemented Interfaces</h2><p>GtkHScale implements AtkImplementorIface and <a class="link" href="gtk-gtkbuildable.html#GtkBuildable">GtkBuildable</a>.</p></div><div class="refsect1" lang="en"><a name="id3543764"></a><h2>Description</h2><p>The <a class="link" href="GtkHScale.html" title="GtkHScale"><span class="type">GtkHScale</span></a> widget is used to allow the user to select a value usinga horizontal slider. To create one, use <a class="link" href="GtkHScale.html#gtk-hscale-new-with-range"><code class="function">gtk_hscale_new_with_range()</code></a>.</p><p>The position to show the current value, and the number of decimal placesshown can be set using the parent <a class="link" href="GtkScale.html" title="GtkScale"><span class="type">GtkScale</span></a> class's functions.</p></div><div class="refsect1" lang="en"><a name="id3543812"></a><h2>Details</h2><div class="refsect2" lang="en"><a name="id3543823"></a><h3><a name="GtkHScale-struct"></a>GtkHScale</h3><a class="indexterm" name="id3543835"></a><pre class="programlisting">typedef struct _GtkHScale GtkHScale;</pre><p>The <a class="link" href="GtkHScale.html#GtkHScale-struct"><span class="type">GtkHScale</span></a> struct contains private data only, andshould be accessed using the functions below.</p></div><hr><div class="refsect2" lang="en"><a name="id3543860"></a><h3><a name="gtk-hscale-new"></a>gtk_hscale_new ()</h3><a class="indexterm" name="id3543872"></a><pre class="programlisting"><a class="link" href="GtkWidget.html" title="GtkWidget">GtkWidget</a>* gtk_hscale_new (<a class="link" href="GtkAdjustment.html" title="GtkAdjustment">GtkAdjustment</a> *adjustment);</pre><p>Creates a new <a class="link" href="GtkHScale.html" title="GtkHScale"><span class="type">GtkHScale</span></a>.</p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><p><span class="term"><em class="parameter"><code>adjustment</code></em> :</span></p></td><td>the <a class="link" href="GtkAdjustment.html" title="GtkAdjustment"><span class="type">GtkAdjustment</span></a> which sets the range of the scale.</td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td>a new <a class="link" href="GtkHScale.html" title="GtkHScale"><span class="type">GtkHScale</span></a>.</td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3543955"></a><h3><a name="gtk-hscale-new-with-range"></a>gtk_hscale_new_with_range ()</h3><a class="indexterm" name="id3543969"></a><pre class="programlisting"><a class="link" href="GtkWidget.html" title="GtkWidget">GtkWidget</a>* gtk_hscale_new_with_range (<ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble">gdouble</a> min, <ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble">gdouble</a> max, <ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble">gdouble</a> step);</pre><p>Creates a new horizontal scale widget that lets the user input anumber between <em class="parameter"><code>min</code></em> and <em class="parameter"><code>max</code></em> (including <em class="parameter"><code>min</code></em> and <em class="parameter"><code>max</code></em>) with theincrement <em class="parameter"><code>step</code></em>. <em class="parameter"><code>step</code></em> must be nonzero; it's the distance theslider moves when using the arrow keys to adjust the scale value.</p><p>Note that the way in which the precision is derived works best if <em class="parameter"><code>step</code></em> is a power of ten. If the resulting precision is not suitable for your needs, use <a class="link" href="GtkScale.html#gtk-scale-set-digits"><code class="function">gtk_scale_set_digits()</code></a> to correct it.</p><p></p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><p><span class="term"><em class="parameter"><code>min</code></em> :</span></p></td><td> minimum value</td></tr><tr><td><p><span class="term"><em class="parameter"><code>max</code></em> :</span></p></td><td> maximum value</td></tr><tr><td><p><span class="term"><em class="parameter"><code>step</code></em> :</span></p></td><td> step increment (tick size) used with keyboard shortcuts</td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td> a new <a class="link" href="GtkHScale.html" title="GtkHScale"><span class="type">GtkHScale</span></a></td></tr></tbody></table></div></div></div><div class="refsect1" lang="en"><a name="id3544143"></a><div class="refsect2" lang="en"><a name="id3544144"></a></div><hr><div class="refsect2" lang="en"><a name="id3544145"></a></div></div></div></body></html>⌨️ 快捷键说明
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