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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>Types</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="gtkbase.html" title="Part II. GTK+ Core Reference"><link rel="prev" href="gtk-Signals.html" title="Signals"><link rel="next" href="gtkobjects.html" title="Part III. GTK+ Widgets and Objects"><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="gtk-Signals.html"><img src="left.png" width="24" height="24" border="0" alt="Prev"></a></td><td><a accesskey="u" href="gtkbase.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="gtkobjects.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="#id3341699" class="shortcut">Top</a>  |  <a href="#id3342555" class="shortcut">Description</a></nobr></td></tr></table><div class="refentry" lang="en"><a name="gtk-Types"></a><div class="titlepage"></div><div class="refnamediv"><table width="100%"><tr><td valign="top"><h2><a name="id3341699"></a><span class="refentrytitle">Types</span></h2><p>Types — Handle run-time type creation</p></td><td valign="top" align="right"></td></tr></table></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="synopsis">#include <gtk/gtk.h>typedef <a class="link" href="gtk-Types.html#GtkType">GtkType</a>;typedef <a class="link" href="gtk-Types.html#GtkFundamentalType">GtkFundamentalType</a>;#define <a class="link" href="gtk-Types.html#GTK-CLASS-NAME:CAPS">GTK_CLASS_NAME</a> (class)#define <a class="link" href="gtk-Types.html#GTK-CLASS-TYPE:CAPS">GTK_CLASS_TYPE</a> (class)#define <a class="link" href="gtk-Types.html#GTK-TYPE-IS-OBJECT:CAPS">GTK_TYPE_IS_OBJECT</a> (type)#define <a class="link" href="gtk-Types.html#GTK-TYPE-FUNDAMENTAL-LAST:CAPS">GTK_TYPE_FUNDAMENTAL_LAST</a>#define <a class="link" href="gtk-Types.html#GTK-TYPE-FUNDAMENTAL-MAX:CAPS">GTK_TYPE_FUNDAMENTAL_MAX</a>#define <a class="link" href="gtk-Types.html#GTK-STRUCT-OFFSET:CAPS">GTK_STRUCT_OFFSET</a>#define <a class="link" href="gtk-Types.html#GTK-CHECK-CAST:CAPS">GTK_CHECK_CAST</a>#define <a class="link" href="gtk-Types.html#GTK-CHECK-CLASS-CAST:CAPS">GTK_CHECK_CLASS_CAST</a>#define <a class="link" href="gtk-Types.html#GTK-CHECK-TYPE:CAPS">GTK_CHECK_TYPE</a>#define <a class="link" href="gtk-Types.html#GTK-CHECK-CLASS-TYPE:CAPS">GTK_CHECK_CLASS_TYPE</a>#define <a class="link" href="gtk-Types.html#GTK-CHECK-GET-CLASS:CAPS">GTK_CHECK_GET_CLASS</a>#define <a class="link" href="gtk-Types.html#GTK-FUNDAMENTAL-TYPE:CAPS">GTK_FUNDAMENTAL_TYPE</a>#define <a class="link" href="gtk-Types.html#GTK-SIGNAL-FUNC:CAPS">GTK_SIGNAL_FUNC</a> (f)typedef <a class="link" href="gtk-Types.html#GtkClassInitFunc">GtkClassInitFunc</a>;typedef <a class="link" href="gtk-Types.html#GtkObjectInitFunc">GtkObjectInitFunc</a>;void (<a class="link" href="gtk-Types.html#GtkSignalFunc">*GtkSignalFunc</a>) (void);<ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean">gboolean</a> (<a class="link" href="gtk-Types.html#GtkFunction">*GtkFunction</a>) (<ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer">gpointer</a> data);void (<a class="link" href="gtk-Types.html#GtkDestroyNotify">*GtkDestroyNotify</a>) (<ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer">gpointer</a> data);void (<a class="link" href="gtk-Types.html#GtkCallbackMarshal">*GtkCallbackMarshal</a>) (<a class="link" href="GtkObject.html" title="GtkObject">GtkObject</a> *object, <ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer">gpointer</a> data, <ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint">guint</a> n_args, <a class="link" href="gtk-Types.html#GtkArg">GtkArg</a> *args);typedef <a class="link" href="gtk-Types.html#GtkSignalMarshaller">GtkSignalMarshaller</a>;typedef <a class="link" href="gtk-Types.html#GtkTypeObject">GtkTypeObject</a>; <a class="link" href="gtk-Types.html#GtkArg">GtkArg</a>;#define <a class="link" href="gtk-Types.html#GTK-VALUE-CHAR:CAPS">GTK_VALUE_CHAR</a> (a)#define <a class="link" href="gtk-Types.html#GTK-VALUE-UCHAR:CAPS">GTK_VALUE_UCHAR</a> (a)#define <a class="link" href="gtk-Types.html#GTK-VALUE-BOOL:CAPS">GTK_VALUE_BOOL</a> (a)#define <a class="link" href="gtk-Types.html#GTK-VALUE-INT:CAPS">GTK_VALUE_INT</a> (a)#define <a class="link" href="gtk-Types.html#GTK-VALUE-UINT:CAPS">GTK_VALUE_UINT</a> (a)#define <a class="link" href="gtk-Types.html#GTK-VALUE-LONG:CAPS">GTK_VALUE_LONG</a> (a)#define <a class="link" href="gtk-Types.html#GTK-VALUE-ULONG:CAPS">GTK_VALUE_ULONG</a> (a)#define <a class="link" href="gtk-Types.html#GTK-VALUE-FLOAT:CAPS">GTK_VALUE_FLOAT</a> (a)#define <a class="link" href="gtk-Types.html#GTK-VALUE-DOUBLE:CAPS">GTK_VALUE_DOUBLE</a> (a)#define <a class="link" href="gtk-Types.html#GTK-VALUE-STRING:CAPS">GTK_VALUE_STRING</a> (a)#define <a class="link" href="gtk-Types.html#GTK-VALUE-ENUM:CAPS">GTK_VALUE_ENUM</a> (a)#define <a class="link" href="gtk-Types.html#GTK-VALUE-FLAGS:CAPS">GTK_VALUE_FLAGS</a> (a)#define <a class="link" href="gtk-Types.html#GTK-VALUE-BOXED:CAPS">GTK_VALUE_BOXED</a> (a)#define <a class="link" href="gtk-Types.html#GTK-VALUE-POINTER:CAPS">GTK_VALUE_POINTER</a> (a)#define <a class="link" href="gtk-Types.html#GTK-VALUE-OBJECT:CAPS">GTK_VALUE_OBJECT</a> (a)#define <a class="link" href="gtk-Types.html#GTK-VALUE-SIGNAL:CAPS">GTK_VALUE_SIGNAL</a> (a)#define <a class="link" href="gtk-Types.html#GTK-RETLOC-CHAR:CAPS">GTK_RETLOC_CHAR</a> (a)#define <a class="link" href="gtk-Types.html#GTK-RETLOC-UCHAR:CAPS">GTK_RETLOC_UCHAR</a> (a)#define <a class="link" href="gtk-Types.html#GTK-RETLOC-BOOL:CAPS">GTK_RETLOC_BOOL</a> (a)#define <a class="link" href="gtk-Types.html#GTK-RETLOC-INT:CAPS">GTK_RETLOC_INT</a> (a)#define <a class="link" href="gtk-Types.html#GTK-RETLOC-UINT:CAPS">GTK_RETLOC_UINT</a> (a)#define <a class="link" href="gtk-Types.html#GTK-RETLOC-LONG:CAPS">GTK_RETLOC_LONG</a> (a)#define <a class="link" href="gtk-Types.html#GTK-RETLOC-ULONG:CAPS">GTK_RETLOC_ULONG</a> (a)#define <a class="link" href="gtk-Types.html#GTK-RETLOC-FLOAT:CAPS">GTK_RETLOC_FLOAT</a> (a)#define <a class="link" href="gtk-Types.html#GTK-RETLOC-DOUBLE:CAPS">GTK_RETLOC_DOUBLE</a> (a)#define <a class="link" href="gtk-Types.html#GTK-RETLOC-STRING:CAPS">GTK_RETLOC_STRING</a> (a)#define <a class="link" href="gtk-Types.html#GTK-RETLOC-ENUM:CAPS">GTK_RETLOC_ENUM</a> (a)#define <a class="link" href="gtk-Types.html#GTK-RETLOC-FLAGS:CAPS">GTK_RETLOC_FLAGS</a> (a)#define <a class="link" href="gtk-Types.html#GTK-RETLOC-BOXED:CAPS">GTK_RETLOC_BOXED</a> (a)#define <a class="link" href="gtk-Types.html#GTK-RETLOC-POINTER:CAPS">GTK_RETLOC_POINTER</a> (a)#define <a class="link" href="gtk-Types.html#GTK-RETLOC-OBJECT:CAPS">GTK_RETLOC_OBJECT</a> (a) <a class="link" href="gtk-Types.html#GtkTypeInfo">GtkTypeInfo</a>;typedef <a class="link" href="gtk-Types.html#GtkTypeClass">GtkTypeClass</a>;typedef <a class="link" href="gtk-Types.html#GtkEnumValue">GtkEnumValue</a>;typedef <a class="link" href="gtk-Types.html#GtkFlagValue">GtkFlagValue</a>;void <a class="link" href="gtk-Types.html#gtk-type-init">gtk_type_init</a> (<ahref="/usr/share/gtk-doc/html/gobject/gobject-Type-Information.html#GTypeDebugFlags">GTypeDebugFlags</a> debug_flags);<a class="link" href="gtk-Types.html#GtkType">GtkType</a> <a class="link" href="gtk-Types.html#gtk-type-unique">gtk_type_unique</a> (<a class="link" href="gtk-Types.html#GtkType">GtkType</a> parent_type, const <a class="link" href="gtk-Types.html#GtkTypeInfo">GtkTypeInfo</a> *gtkinfo);#define <a class="link" href="gtk-Types.html#gtk-type-name">gtk_type_name</a> (type)#define <a class="link" href="gtk-Types.html#gtk-type-from-name">gtk_type_from_name</a> (name)#define <a class="link" href="gtk-Types.html#gtk-type-parent">gtk_type_parent</a> (type)<ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer">gpointer</a> <a class="link" href="gtk-Types.html#gtk-type-class">gtk_type_class</a> (<a class="link" href="gtk-Types.html#GtkType">GtkType</a> type);<ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer">gpointer</a> <a class="link" href="gtk-Types.html#gtk-type-new">gtk_type_new</a> (<a class="link" href="gtk-Types.html#GtkType">GtkType</a> type);#define <a class="link" href="gtk-Types.html#gtk-type-is-a">gtk_type_is_a</a> (type, is_a_type)<a class="link" href="gtk-Types.html#GtkEnumValue">GtkEnumValue</a>* <a class="link" href="gtk-Types.html#gtk-type-enum-get-values">gtk_type_enum_get_values</a> (<a class="link" href="gtk-Types.html#GtkType">GtkType</a> enum_type);<a class="link" href="gtk-Types.html#GtkFlagValue">GtkFlagValue</a>* <a class="link" href="gtk-Types.html#gtk-type-flags-get-values">gtk_type_flags_get_values</a> (<a class="link" href="gtk-Types.html#GtkType">GtkType</a> flags_type);<a class="link" href="gtk-Types.html#GtkEnumValue">GtkEnumValue</a>* <a class="link" href="gtk-Types.html#gtk-type-enum-find-value">gtk_type_enum_find_value</a> (<a class="link" href="gtk-Types.html#GtkType">GtkType</a> enum_type, const <ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar">gchar</a> *value_name);<a class="link" href="gtk-Types.html#GtkFlagValue">GtkFlagValue</a>* <a class="link" href="gtk-Types.html#gtk-type-flags-find-value">gtk_type_flags_find_value</a> (<a class="link" href="gtk-Types.html#GtkType">GtkType</a> flags_type, const <ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar">gchar</a> *value_name);</pre></div><div class="refsect1" lang="en"><a name="id3342555"></a><h2>Description</h2><p>The GTK+ type system is extensible. Because of that, types have to bemanaged at runtime.</p></div><div class="refsect1" lang="en"><a name="id3342572"></a><h2>Details</h2><div class="refsect2" lang="en"><a name="id3342582"></a><h3><a name="GtkType"></a>GtkType</h3><a class="indexterm" name="id3342594"></a><pre class="programlisting">typedef GType GtkType;</pre><p><a class="link" href="gtk-Types.html#GtkType"><span class="type">GtkType</span></a> is unique integer identifying the type. The guts of theinformation about the type is held in a private struct named<span class="type">GtkTypeNode</span>.</p></div><hr><div class="refsect2" lang="en"><a name="id3342628"></a><h3><a name="GtkFundamentalType"></a>GtkFundamentalType</h3><a class="indexterm" name="id3342644"></a><pre class="programlisting">typedef GType GtkFundamentalType;</pre><div class="warning" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Warning</h3><p><code class="literal">GtkFundamentalType</code> is deprecated and should not be used in newly-written code.</p></div><p><a class="link" href="gtk-Types.html#GtkFundamentalType"><span class="type">GtkFundamentalType</span></a> is an enumerated type which lists all the possiblefundamental types (e.g. <span class="type">char</span>, <span class="type">uchar</span>, <span class="type">int</span>,<span class="type">long</span>, <span class="type">float</span>, etc).</p></div><hr><div class="refsect2" lang="en"><a name="id3342698"></a><h3><a name="GTK-CLASS-NAME:CAPS"></a>GTK_CLASS_NAME()</h3><a class="indexterm" name="id3342715"></a><pre class="programlisting">#define GTK_CLASS_NAME(class) (g_type_name (G_TYPE_FROM_CLASS (class)))</pre><div class="warning" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Warning</h3><p><code class="literal">GTK_CLASS_NAME</code> is deprecated and should not be used in newly-written code. Use <ahref="/usr/share/gtk-doc/html/gobject/gobject-Type-Information.html#g-type-name"><code class="function">g_type_name()</code></a> and <ahref="/usr/share/gtk-doc/html/gobject/gobject-Type-Information.html#G-TYPE-FROM-CLASS:CAPS"><code class="function">G_TYPE_FROM_CLASS()</code></a> instead.</p></div><p>Returns the type name of <em class="parameter"><code>class</code></em>.</p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><p><span class="term"><em class="parameter"><code>class</code></em> :</span></p></td><td>a <a class="link" href="gtk-Types.html#GtkTypeClass"><span class="type">GtkTypeClass</span></a>.</td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3342799"></a><h3><a name="GTK-CLASS-TYPE:CAPS"></a>GTK_CLASS_TYPE()</h3><a class="indexterm" name="id3342815"></a><pre class="programlisting">#define GTK_CLASS_TYPE(class) (G_TYPE_FROM_CLASS (class))</pre><div class="warning" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Warning</h3><p><code class="literal">GTK_CLASS_TYPE</code> is deprecated and should not be used in newly-written code. Use <ahref="/usr/share/gtk-doc/html/gobject/gobject-Type-Information.html#G-TYPE-FROM-CLASS:CAPS"><code class="function">G_TYPE_FROM_CLASS()</code></a> instead.</p></div><p>Returns the type of <em class="parameter"><code>class</code></em>.</p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><p><span class="term"><em class="parameter"><code>class</code></em> :</span></p></td><td>a <a class="link" href="gtk-Types.html#GtkTypeClass"><span class="type">GtkTypeClass</span></a>.</td></tr></tbody></table></div></div>⌨️ 快捷键说明
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