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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>GContentType</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="types.html" title="File types and applications"><link rel="prev" href="types.html" title="File types and applications"><link rel="next" href="GAppInfo.html" title="GAppInfo"><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" 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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="types.html"><img src="left.png" width="24" height="24" border="0" alt="Prev"></a></td><td><a accesskey="u" href="types.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="GAppInfo.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="#id3113303" class="shortcut">Top</a>  |  <a href="#id3200972" class="shortcut">Description</a></nobr></td></tr></table><div class="refentry" lang="en"><a name="gio-GContentType"></a><div class="titlepage"></div><div class="refnamediv"><table width="100%"><tr><td valign="top"><h2><a name="id3113303"></a><span class="refentrytitle">GContentType</span></h2><p>GContentType — Platform-specific content typing</p></td><td valign="top" align="right"></td></tr></table></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="synopsis">#include <gio/gio.h><ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean">gboolean</a> <a class="link" href="gio-GContentType.html#g-content-type-equals">g_content_type_equals</a> (const char *type1, const char *type2);<ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean">gboolean</a> <a class="link" href="gio-GContentType.html#g-content-type-is-a">g_content_type_is_a</a> (const char *type, const char *supertype);<ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean">gboolean</a> <a class="link" href="gio-GContentType.html#g-content-type-is-unknown">g_content_type_is_unknown</a> (const char *type);char* <a class="link" href="gio-GContentType.html#g-content-type-get-description">g_content_type_get_description</a> (const char *type);char* <a class="link" href="gio-GContentType.html#g-content-type-get-mime-type">g_content_type_get_mime_type</a> (const char *type);<a class="link" href="GIcon.html" title="GIcon">GIcon</a>* <a class="link" href="gio-GContentType.html#g-content-type-get-icon">g_content_type_get_icon</a> (const char *type);<ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean">gboolean</a> <a class="link" href="gio-GContentType.html#g-content-type-can-be-executable">g_content_type_can_be_executable</a> (const char *type);char* <a class="link" href="gio-GContentType.html#g-content-type-guess">g_content_type_guess</a> (const char *filename, const <ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guchar">guchar</a> *data, <ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gsize">gsize</a> data_size, <ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean">gboolean</a> *result_uncertain);<ahref="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#GList">GList</a>* <a class="link" href="gio-GContentType.html#g-content-types-get-registered">g_content_types_get_registered</a> (void);</pre></div><div class="refsect1" lang="en"><a name="id3200972"></a><h2>Description</h2><p>A content type is a platform specific string that defines the typeof a file. On unix it is a mime type, on win32 it is an extension stringlike ".doc", ".txt" or a percieved string like "audio". Such stringscan be looked up in the registry at HKEY_CLASSES_ROOT.</p><p></p></div><div class="refsect1" lang="en"><a name="id3200996"></a><h2>Details</h2><div class="refsect2" lang="en"><a name="id3201007"></a><h3><a name="g-content-type-equals"></a>g_content_type_equals ()</h3><a class="indexterm" name="id3206079"></a><pre class="programlisting"><ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean">gboolean</a> g_content_type_equals (const char *type1, const char *type2);</pre><p>Compares two content types for equality.</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>type1</code></em> :</span></p></td><td> a content type string.</td></tr><tr><td><p><span class="term"><em class="parameter"><code>type2</code></em> :</span></p></td><td> a content type string.</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 the two strings are identical or equivalent,<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><hr><div class="refsect2" lang="en"><a name="id3206179"></a><h3><a name="g-content-type-is-a"></a>g_content_type_is_a ()</h3><a class="indexterm" name="id3206191"></a><pre class="programlisting"><ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean">gboolean</a> g_content_type_is_a (const char *type, const char *supertype);</pre><p>Determines if <em class="parameter"><code>type</code></em> is a subset of <em class="parameter"><code>supertype</code></em>.</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>type</code></em> :</span></p></td><td> a content type string. </td></tr><tr><td><p><span class="term"><em class="parameter"><code>supertype</code></em> :</span></p></td><td> a string.</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>type</code></em> is a kind of <em class="parameter"><code>supertype</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><hr><div class="refsect2" lang="en"><a name="id3206316"></a><h3><a name="g-content-type-is-unknown"></a>g_content_type_is_unknown ()</h3><a class="indexterm" name="id3206327"></a><pre class="programlisting"><ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean">gboolean</a> g_content_type_is_unknown (const char *type);</pre><p>Checks if the content type is the generic "unknown" type.On unix this is the "application/octet-stream" mimetype,while on win32 it is "*".</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>type</code></em> :</span></p></td><td> a content type string. </td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>⌨️ 快捷键说明
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