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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>GIcon</title><meta name="generator" content="DocBook XSL Stylesheets V1.73.2"><link rel="start" href="index.html" title="GIO Reference Manual"><link rel="up" href="icons.html" title="Icons"><link rel="prev" href="icons.html" title="Icons"><link rel="next" href="GFileIcon.html" title="GFileIcon"><meta name="generator" content="GTK-Doc V1.9 (XML mode)"><link rel="stylesheet" href="style.css" type="text/css"><link rel="part" href="pt01.html" title="Part I. GIO Overview"><link rel="chapter" href="ch01.html" title="Introduction"><link rel="chapter" href="ch02.html" title="Compiling GIO applications"><link rel="chapter" href="ch03.html" title="Running GIO applications"><link rel="chapter" href="gio-extension-points.html" title="Extending GIO"><link rel="part" href="pt02.html" title="Part II. API Reference"><link rel="chapter" href="file_ops.html" title="File Operations"><link rel="chapter" href="file_mon.html" title="File System Monitoring"><link rel="chapter" href="async.html" title="Asynchronous I/O"><link rel="chapter" href="streaming.html" title="Streaming I/O"><link rel="chapter" href="types.html" title="File types and applications"><link rel="chapter" href="volume_mon.html" title="Volumes and Drives"><link rel="chapter" href="icons.html" title="Icons"><link rel="chapter" href="utils.html" title="Utilities"><link rel="chapter" href="extending.html" title="Extending GIO"><link rel="part" href="migrating.html" title="Part III. Migrating to GIO"><link rel="chapter" href="ch14.html" title="Migrating from POSIX to GIO"><link rel="chapter" href="ch15.html" title="Migrating from GnomeVFS to GIO"><link rel="chapter" href="gio-hierarchy.html" title="Object Hierarchy"><link rel="index" href="ix01.html" title="Index"></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="icons.html"><img src="left.png" width="24" height="24" border="0" alt="Prev"></a></td><td><a accesskey="u" href="icons.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">GIO Reference Manual</th><td><a accesskey="n" href="GFileIcon.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="#id3093697" class="shortcut">Top</a>  |  <a href="#id3227136" class="shortcut">Description</a>  |  <a href="#id3106556" class="shortcut">Object Hierarchy</a>  |  <a href="#id3233829" class="shortcut">Prerequisites</a>  |  <a href="#id3233850" class="shortcut">Known Derived Interfaces</a>  |  <a href="#id3233870" class="shortcut">Known Implementations</a></nobr></td></tr></table><div class="refentry" lang="en"><a name="GIcon"></a><div class="titlepage"></div><div class="refnamediv"><table width="100%"><tr><td valign="top"><h2><a name="id3093697"></a><span class="refentrytitle">GIcon</span></h2><p>GIcon — Interface for icons</p></td><td valign="top" align="right"></td></tr></table></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="synopsis">#include <gio/gio.h> <a class="link" href="GIcon.html#GIcon-struct">GIcon</a>; <a class="link" href="GIcon.html#GIconIface">GIconIface</a>;<ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint">guint</a> <a class="link" href="GIcon.html#g-icon-hash">g_icon_hash</a> (<ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gconstpointer">gconstpointer</a> icon);<ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean">gboolean</a> <a class="link" href="GIcon.html#g-icon-equal">g_icon_equal</a> (<a class="link" href="GIcon.html" title="GIcon">GIcon</a> *icon1, <a class="link" href="GIcon.html" title="GIcon">GIcon</a> *icon2);</pre></div><div class="refsect1" lang="en"><a name="id3106556"></a><h2>Object Hierarchy</h2><pre class="synopsis"> GInterface +----GIcon</pre></div><div class="refsect1" lang="en"><a name="id3233829"></a><h2>Prerequisites</h2><p>GIcon requires <ahref="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject">GObject</a>.</p></div><div class="refsect1" lang="en"><a name="id3233850"></a><h2>Known Derived Interfaces</h2><p>GIcon is required by <a class="link" href="GLoadableIcon.html" title="GLoadableIcon">GLoadableIcon</a>.</p></div><div class="refsect1" lang="en"><a name="id3233870"></a><h2>Known Implementations</h2><p>GIcon is implemented by <a class="link" href="GThemedIcon.html" title="GThemedIcon">GThemedIcon</a> and <a class="link" href="GFileIcon.html" title="GFileIcon">GFileIcon</a>.</p></div><div class="refsect1" lang="en"><a name="id3227136"></a><h2>Description</h2><p><a class="link" href="GIcon.html" title="GIcon"><span class="type">GIcon</span></a> is a very minimal interface for icons. It provides functions for checking the equality of two icons and hashing of icons.</p><p><a class="link" href="GIcon.html" title="GIcon"><span class="type">GIcon</span></a> does not provide the actual pixmap for the icon as this is out of GIO's scope, however implementations of <a class="link" href="GIcon.html" title="GIcon"><span class="type">GIcon</span></a> may contain the name of an icon (see <a class="link" href="GThemedIcon.html" title="GThemedIcon"><span class="type">GThemedIcon</span></a>), or the path to an icon (see <a class="link" href="GLoadableIcon.html" title="GLoadableIcon"><span class="type">GLoadableIcon</span></a>). </p><p>To obtain a hash of a <a class="link" href="GIcon.html" title="GIcon"><span class="type">GIcon</span></a>, see <a class="link" href="GIcon.html#g-icon-hash"><code class="function">g_icon_hash()</code></a>.</p><p>To check if two <span class="type">GIcons</span> are equal, see <a class="link" href="GIcon.html#g-icon-equal"><code class="function">g_icon_equal()</code></a>.</p><p></p></div><div class="refsect1" lang="en"><a name="id3227236"></a><h2>Details</h2><div class="refsect2" lang="en"><a name="id3227247"></a><h3><a name="GIcon-struct"></a>GIcon</h3><a class="indexterm" name="id3227258"></a><pre class="programlisting">typedef struct _GIcon GIcon;</pre><p>An abstract type that specifies an icon.</p><p></p></div><hr><div class="refsect2" lang="en"><a name="id3227277"></a><h3><a name="GIconIface"></a>GIconIface</h3><a class="indexterm" name="id3227289"></a><pre class="programlisting">typedef struct { GTypeInterface g_iface; /* Virtual Table */ guint (*hash) (GIcon *icon); gboolean (*equal) (GIcon *icon1, GIcon *icon2);} GIconIface;</pre><p>GIconIface is used to implement GIcon types for variousdifferent systems. See <a class="link" href="GThemedIcon.html" title="GThemedIcon"><span class="type">GThemedIcon</span></a> and <a class="link" href="GLoadableIcon.html" title="GLoadableIcon"><span class="type">GLoadableIcon</span></a> forexamples of how to implement this interface.</p><p></p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><p><span class="term"><ahref="/usr/share/gtk-doc/html/gobject/gobject-Type-Information.html#GTypeInterface">GTypeInterface</a> <em class="structfield"><code>g_iface</code></em>;</span></p></td><td> The parent interface.</td></tr><tr><td><p><span class="term"><em class="structfield"><code>hash</code></em> ()</span></p></td><td> A hash for a given <a class="link" href="GIcon.html" title="GIcon"><span class="type">GIcon</span></a>.</td></tr><tr><td><p><span class="term"><em class="structfield"><code>equal</code></em> ()</span></p></td><td> Checks if two <a class="link" href="GIcon.html" title="GIcon"><span class="type">GIcon</span></a>s are equal.</td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3214789"></a><h3><a name="g-icon-hash"></a>g_icon_hash ()</h3><a class="indexterm" name="id3214801"></a><pre class="programlisting"><ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint">guint</a> g_icon_hash (<ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gconstpointer">gconstpointer</a> icon);</pre><p>Gets a hash for an icon.</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>icon</code></em> :</span></p></td><td> <ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gconstpointer"><span class="type">gconstpointer</span></a> to an icon object.</td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td> a <ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> containing a hash for the <em class="parameter"><code>icon</code></em>, suitable for use in a <ahref="/usr/share/gtk-doc/html/glib/glib-Hash-Tables.html#GHashTable"><span class="type">GHashTable</span></a> or similar data structure.</td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3214886"></a><h3><a name="g-icon-equal"></a>g_icon_equal ()</h3><a class="indexterm" name="id3214897"></a><pre class="programlisting"><ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean">gboolean</a> g_icon_equal (<a class="link" href="GIcon.html" title="GIcon">GIcon</a> *icon1, <a class="link" href="GIcon.html" title="GIcon">GIcon</a> *icon2);</pre><p>Checks if two icons are equal.</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>icon1</code></em> :</span></p></td><td> pointer to the first <a class="link" href="GIcon.html" title="GIcon"><span class="type">GIcon</span></a>.</td></tr><tr><td><p><span class="term"><em class="parameter"><code>icon2</code></em> :</span></p></td><td> pointer to the second <a class="link" href="GIcon.html" title="GIcon"><span class="type">GIcon</span></a>.</td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td> <ahref="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>icon1</code></em> is equal to <em class="parameter"><code>icon2</code></em>. <ahref="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</td></tr></tbody></table></div></div></div><div class="refsect1" lang="en"><a name="id3215022"></a><div class="refsect2" lang="en"><a name="id3215023"></a></div><hr><div class="refsect2" lang="en"><a name="id3215024"></a></div></div></div></body></html>⌨️ 快捷键说明
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