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<a href="#id3039117" class="shortcut">Description</a></nobr></td></tr>
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<div class="refentry" lang="en">
<a name="glib-I18N"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2>
<a name="id3039032"></a><span class="refentrytitle">Internationalization</span>
</h2>
<p>Internationalization — gettext support macros.</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<pre class="synopsis">
#include <glib.h>
#include <glib/gi18n.h>
#define <a href="glib-I18N.html#gettext-macro">_</a> (String)
#define <a href="glib-I18N.html#Q-:CAPS">Q_</a> (String)
#define <a href="glib-I18N.html#N-:CAPS">N_</a> (String)
const <a href="glib-Basic-Types.html#gchar">gchar</a>* <a href="glib-I18N.html#g-strip-context">g_strip_context</a> (const <a href="glib-Basic-Types.html#gchar">gchar</a> *msgid,
const <a href="glib-Basic-Types.html#gchar">gchar</a> *msgval);
const <a href="glib-Basic-Types.html#gchar">gchar</a>* const * <a href="glib-I18N.html#g-get-language-names">g_get_language_names</a> (void);
</pre>
</div>
<div class="refsect1" lang="en">
<a name="id3039117"></a><h2>Description</h2>
<p>
GLib doesn't force any particular localization method upon its users.
But since GLib itself is localized using the <a
href="../libbonobo/libbonobo-bonobo-i18n.html#gettext"
><code class="function">gettext()</code></a> mechanism, it seems
natural to offer the de-facto standard <a
href="../libbonobo/libbonobo-bonobo-i18n.html#gettext"
><code class="function">gettext()</code></a> support macros in an
easy-to-use form.
</p>
<p>
In order to use these macros in an application, you must include
<code class="filename">glib/gi18n.h</code>. For use in a library, must include
<code class="filename">glib/gi18n-lib.h</code> <span class="emphasis"><em>after</em></span> defining
the GETTEXT_PACKAGE macro suitably for your library:
</p>
<div class="informalexample"><pre class="programlisting">
#define GETTEXT_PACKAGE "gtk20"
#include <glib/gi18n-lib.h>
</pre></div>
<p>
</p>
</div>
<div class="refsect1" lang="en">
<a name="id3039187"></a><h2>Details</h2>
<div class="refsect2" lang="en">
<a name="id3039197"></a><h3>
<a name="gettext-macro"></a>_()</h3>
<a class="indexterm" name="id3039212"></a><pre class="programlisting">#define _(String)</pre>
<p>
Marks a string for translation, gets replaced with the translated string
at runtime.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td>
<span class="term"><em class="parameter"><code>String</code></em> :</span></td>
<td>the string to be translated
</td>
</tr></tbody>
</table></div>
<p>Since 2.4
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3039251"></a><h3>
<a name="Q-:CAPS"></a>Q_()</h3>
<a class="indexterm" name="id3039266"></a><pre class="programlisting">#define Q_(String)</pre>
<p>
Like <a href="glib-I18N.html#gettext-macro"><code class="function">_()</code></a>, but applies <a href="glib-I18N.html#g-strip-context"><code class="function">g_strip_context()</code></a> to the translation. This has the
advantage that the string can be adorned with a prefix to guarantee
uniqueness and provide context to the translator.
</p>
<p>
One use case given in the gettext manual is GUI translation, where one could
e.g. disambiguate two "Open" menu entries as "File|Open" and "Printer|Open".
Another use case is the string "Russian" which may have to be translated
differently depending on whether it's the name of a character set or a
language. This could be solved by using "charset|Russian" and
"language|Russian".
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td>
<span class="term"><em class="parameter"><code>String</code></em> :</span></td>
<td>the string to be translated, with a '|'-separated prefix which
must not be translated
</td>
</tr></tbody>
</table></div>
<p>Since 2.4
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3039339"></a><h3>
<a name="N-:CAPS"></a>N_()</h3>
<a class="indexterm" name="id3039353"></a><pre class="programlisting">#define N_(String)</pre>
<p>
Marks a string for translation, gets replaced with the untranslated string
at runtime. This is useful in situations where the translated strings can't
be directly used, e.g. in string array initializers.
</p>
<div class="informalexample"><pre class="programlisting">
{
static const char *messages[] = {
N_("some very meaningful message"),
N_("and another one")
};
const char *string;
...
string
= index > 1 ? _("a default message") : gettext (messages[index]);
fputs (string);
...
}
</pre></div>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td>
<span class="term"><em class="parameter"><code>String</code></em> :</span></td>
<td>the string to be translated
</td>
</tr></tbody>
</table></div>
<p>Since 2.4
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3039412"></a><h3>
<a name="g-strip-context"></a>g_strip_context ()</h3>
<a class="indexterm" name="id3039427"></a><pre class="programlisting">const <a href="glib-Basic-Types.html#gchar">gchar</a>* g_strip_context (const <a href="glib-Basic-Types.html#gchar">gchar</a> *msgid,
const <a href="glib-Basic-Types.html#gchar">gchar</a> *msgval);</pre>
<p>
An auxiliary function for <a
href="../libbonobo/libbonobo-bonobo-i18n.html#gettext"
><code class="function">gettext()</code></a> support (see <a href="glib-I18N.html#Q-:CAPS"><code class="function">Q_()</code></a>).</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td>
<span class="term"><em class="parameter"><code>msgid</code></em> :</span></td>
<td> a string
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>msgval</code></em> :</span></td>
<td> another string
</td>
</tr>
<tr>
<td>
<span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> <em class="parameter"><code>msgval</code></em>, unless <em class="parameter"><code>msgval</code></em> is identical to <em class="parameter"><code>msgid</code></em> and contains
a '|' character, in which case a pointer to the substring of msgid after
the first '|' character is returned.
</td>
</tr>
</tbody>
</table></div>
<p>Since 2.4
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3039555"></a><h3>
<a name="g-get-language-names"></a>g_get_language_names ()</h3>
<a class="indexterm" name="id3039571"></a><pre class="programlisting">const <a href="glib-Basic-Types.html#gchar">gchar</a>* const * g_get_language_names (void);</pre>
<p>
Computes a list of applicable locale names, which can be used to
e.g. construct locale-dependent filenames or search paths. The returned
list is sorted from most desirable to least desirable and always contains
the default locale "C".
</p>
<p>
For example, if LANGUAGE=de:en_US, then the returned list is
"de", "en_US", "en", "C".
</p>
<p>
This function consults the environment variables <code class="envar">LANGUAGE</code>,
<code class="envar">LC_ALL</code>, <code class="envar">LC_MESSAGES</code> and <code class="envar">LANG</code>
to find the list of locales specified by the user.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td>
<span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> a <a href="glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>-terminated array of strings owned by GLib
that must not be modified or freed.
</td>
</tr></tbody>
</table></div>
<p>Since 2.6
</p>
</div>
</div>
<div class="refsect1" lang="en">
<a name="id3039656"></a><h2>See Also</h2>
<p>
The gettext manual.
</p>
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