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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=UTF-8">
<title>ClutterIMContext: clutter-imcontext Reference Manual</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.79.1">
<link rel="home" href="index.html" title="clutter-imcontext Reference Manual">
<link rel="up" href="ch02.html" title="IMContext">
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</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="5"><tr valign="middle">
<td width="100%" align="left" class="shortcuts">
<a href="#" class="shortcut">Top</a><span id="nav_description">  <span class="dim">|</span> 
                  <a href="#ClutterIMContext.description" class="shortcut">Description</a></span><span id="nav_hierarchy">  <span class="dim">|</span> 
                  <a href="#ClutterIMContext.object-hierarchy" class="shortcut">Object Hierarchy</a></span><span id="nav_signals">  <span class="dim">|</span> 
                  <a href="#ClutterIMContext.signals" class="shortcut">Signals</a></span>
</td>
<td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td>
<td><a accesskey="u" href="ch02.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td>
<td><a accesskey="p" href="ClutterIMMulticontext.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td>
<td><a accesskey="n" href="ClutterIMContextSimple.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td>
</tr></table>
<div class="refentry">
<a name="ClutterIMContext"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="ClutterIMContext.top_of_page"></a>ClutterIMContext</span></h2>
<p>ClutterIMContext — Base class for input method contexts</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="ClutterIMContext.stability-level"></a><h2>Stability Level</h2>
<acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.

The Unstable interface level is a warning that these interfaces are  subject to
change without warning and should not be used in unbundled products.

Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym>, unless otherwise indicated
</div>
<div class="refsect1">
<a name="ClutterIMContext.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="ClutterIMContext.html#clutter-im-context-get-preedit-string" title="clutter_im_context_get_preedit_string ()">clutter_im_context_get_preedit_string</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="ClutterIMContext.html#clutter-im-context-filter-keypress" title="clutter_im_context_filter_keypress ()">clutter_im_context_filter_keypress</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="ClutterIMContext.html#clutter-im-context-focus-in" title="clutter_im_context_focus_in ()">clutter_im_context_focus_in</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="ClutterIMContext.html#clutter-im-context-focus-out" title="clutter_im_context_focus_out ()">clutter_im_context_focus_out</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="ClutterIMContext.html#clutter-im-context-show" title="clutter_im_context_show ()">clutter_im_context_show</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="ClutterIMContext.html#clutter-im-context-hide" title="clutter_im_context_hide ()">clutter_im_context_hide</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="ClutterIMContext.html#clutter-im-context-reset" title="clutter_im_context_reset ()">clutter_im_context_reset</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="ClutterIMContext.html#clutter-im-context-set-cursor-location" title="clutter_im_context_set_cursor_location ()">clutter_im_context_set_cursor_location</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="ClutterIMContext.html#clutter-im-context-set-use-preedit" title="clutter_im_context_set_use_preedit ()">clutter_im_context_set_use_preedit</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="ClutterIMContext.html#clutter-im-context-set-surrounding" title="clutter_im_context_set_surrounding ()">clutter_im_context_set_surrounding</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="ClutterIMContext.html#clutter-im-context-get-surrounding" title="clutter_im_context_get_surrounding ()">clutter_im_context_get_surrounding</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="ClutterIMContext.html#clutter-im-context-delete-surrounding" title="clutter_im_context_delete_surrounding ()">clutter_im_context_delete_surrounding</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="ClutterIMContext.signals"></a><h2>Signals</h2>
<div class="informaltable"><table class="informaltable" border="0">
<colgroup>
<col width="150px" class="signals_return">
<col width="300px" class="signals_name">
<col width="200px" class="signals_flags">
</colgroup>
<tbody>
<tr>
<td class="signal_type"><span class="returnvalue">void</span></td>
<td class="signal_name"><a class="link" href="ClutterIMContext.html#ClutterIMContext-commit" title="The “commit” signal">commit</a></td>
<td class="signal_flags">Run Last</td>
</tr>
<tr>
<td class="signal_type"><span class="returnvalue">gboolean</span></td>
<td class="signal_name"><a class="link" href="ClutterIMContext.html#ClutterIMContext-delete-surrounding" title="The “delete-surrounding” signal">delete-surrounding</a></td>
<td class="signal_flags">Run Last</td>
</tr>
<tr>
<td class="signal_type"><span class="returnvalue">void</span></td>
<td class="signal_name"><a class="link" href="ClutterIMContext.html#ClutterIMContext-preedit-changed" title="The “preedit-changed” signal">preedit-changed</a></td>
<td class="signal_flags">Run Last</td>
</tr>
<tr>
<td class="signal_type"><span class="returnvalue">void</span></td>
<td class="signal_name"><a class="link" href="ClutterIMContext.html#ClutterIMContext-preedit-end" title="The “preedit-end” signal">preedit-end</a></td>
<td class="signal_flags">Run Last</td>
</tr>
<tr>
<td class="signal_type"><span class="returnvalue">void</span></td>
<td class="signal_name"><a class="link" href="ClutterIMContext.html#ClutterIMContext-preedit-start" title="The “preedit-start” signal">preedit-start</a></td>
<td class="signal_flags">Run Last</td>
</tr>
<tr>
<td class="signal_type"><span class="returnvalue">gboolean</span></td>
<td class="signal_name"><a class="link" href="ClutterIMContext.html#ClutterIMContext-retrieve-surrounding" title="The “retrieve-surrounding” signal">retrieve-surrounding</a></td>
<td class="signal_flags">Run Last</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="ClutterIMContext.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody><tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="ClutterIMContext.html#ClutterIMRectangle" title="struct ClutterIMRectangle">ClutterIMRectangle</a></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="ClutterIMContext.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen">    GObject
    <span class="lineart">╰──</span> ClutterIMContext
        <span class="lineart">├──</span> <a class="link" href="ClutterIMContextSimple.html" title="ClutterIMContextSimple">ClutterIMContextSimple</a>
        <span class="lineart">╰──</span> <a class="link" href="ClutterIMMulticontext.html" title="ClutterIMMulticontext">ClutterIMMulticontext</a>
</pre>
</div>
<div class="refsect1">
<a name="ClutterIMContext.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include &lt;clutter-imcontext/clutter-imcontext.h&gt;
</pre>
</div>
<div class="refsect1">
<a name="ClutterIMContext.description"></a><h2>Description</h2>
<p><a class="link" href="ClutterIMContext.html" title="ClutterIMContext"><span class="type">ClutterIMContext</span></a> is a base class for input method contexts.</p>
</div>
<div class="refsect1">
<a name="ClutterIMContext.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="clutter-im-context-get-preedit-string"></a><h3>clutter_im_context_get_preedit_string ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
clutter_im_context_get_preedit_string (<em class="parameter"><code><a class="link" href="ClutterIMContext.html" title="ClutterIMContext"><span class="type">ClutterIMContext</span></a> *context</code></em>,
                                       <em class="parameter"><code><span class="type">gchar</span> **str</code></em>,
                                       <em class="parameter"><code><span class="type">PangoAttrList</span> **attrs</code></em>,
                                       <em class="parameter"><code><span class="type">gint</span> *cursor_pos</code></em>);</pre>
<p>Retrieve the current preedit string for the input context,
and a list of attributes to apply to the string.
This string should be displayed inserted at the insertion
point.</p>
<div class="refsect3">
<a name="clutter-im-context-get-preedit-string.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="ClutterIMContext.html" title="ClutterIMContext"><span class="type">ClutterIMContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>str</p></td>
<td class="parameter_description"><p>location to store the retrieved string. The
string retrieved must be freed with <code class="function">g_free()</code>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>attrs</p></td>
<td class="parameter_description"><p>location to store the retrieved attribute list.
When you are done with this list, you must
unreference it with <code class="function">pango_attr_list_unref()</code>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>cursor_pos</p></td>
<td class="parameter_description"><p>location to store position of cursor (in characters)
within the preedit string.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="clutter-im-context-filter-keypress"></a><h3>clutter_im_context_filter_keypress ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
clutter_im_context_filter_keypress (<em class="parameter"><code><a class="link" href="ClutterIMContext.html" title="ClutterIMContext"><span class="type">ClutterIMContext</span></a> *context</code></em>,
                                    <em class="parameter"><code><span class="type">ClutterKeyEvent</span> *event</code></em>);</pre>
<p>Allow an input method to internally handle key press and release
events. If this function returns <code class="literal">TRUE</code>, then no further processing
should be done for this key event.</p>
<div class="refsect3">
<a name="clutter-im-context-filter-keypress.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="ClutterIMContext.html" title="ClutterIMContext"><span class="type">ClutterIMContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>event</p></td>
<td class="parameter_description"><p>the key event</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="clutter-im-context-filter-keypress.returns"></a><h4>Returns</h4>
<p> <code class="literal">TRUE</code> if the input method handled the key event.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="clutter-im-context-focus-in"></a><h3>clutter_im_context_focus_in ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
clutter_im_context_focus_in (<em class="parameter"><code><a class="link" href="ClutterIMContext.html" title="ClutterIMContext"><span class="type">ClutterIMContext</span></a> *context</code></em>);</pre>
<p>Notify the input method that the widget to which this
input context corresponds has gained focus. The input method
may, for example, change the displayed feedback to reflect
this change.</p>
<div class="refsect3">
<a name="clutter-im-context-focus-in.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="ClutterIMContext.html" title="ClutterIMContext"><span class="type">ClutterIMContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="clutter-im-context-focus-out"></a><h3>clutter_im_context_focus_out ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
clutter_im_context_focus_out (<em class="parameter"><code><a class="link" href="ClutterIMContext.html" title="ClutterIMContext"><span class="type">ClutterIMContext</span></a> *context</code></em>);</pre>
<p>Notify the input method that the widget to which this
input context corresponds has lost focus. The input method
may, for example, change the displayed feedback or reset the contexts
state to reflect this change.</p>
<div class="refsect3">
<a name="clutter-im-context-focus-out.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="ClutterIMContext.html" title="ClutterIMContext"><span class="type">ClutterIMContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="clutter-im-context-show"></a><h3>clutter_im_context_show ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
clutter_im_context_show (<em class="parameter"><code><a class="link" href="ClutterIMContext.html" title="ClutterIMContext"><span class="type">ClutterIMContext</span></a> *context</code></em>);</pre>
<p>Notify the input method that the IM UI need to be shown</p>
<div class="refsect3">
<a name="clutter-im-context-show.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="ClutterIMContext.html" title="ClutterIMContext"><span class="type">ClutterIMContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="clutter-im-context-hide"></a><h3>clutter_im_context_hide ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
clutter_im_context_hide (<em class="parameter"><code><a class="link" href="ClutterIMContext.html" title="ClutterIMContext"><span class="type">ClutterIMContext</span></a> *context</code></em>);</pre>
<p>Notify the input method that the IM UI need to be hidden</p>
<div class="refsect3">
<a name="clutter-im-context-hide.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="ClutterIMContext.html" title="ClutterIMContext"><span class="type">ClutterIMContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="clutter-im-context-reset"></a><h3>clutter_im_context_reset ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
clutter_im_context_reset (<em class="parameter"><code><a class="link" href="ClutterIMContext.html" title="ClutterIMContext"><span class="type">ClutterIMContext</span></a> *context</code></em>);</pre>
<p>Notify the input method that a change such as a change in cursor
position has been made. This will typically cause the input
method to clear the preedit state.</p>
<div class="refsect3">
<a name="clutter-im-context-reset.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="ClutterIMContext.html" title="ClutterIMContext"><span class="type">ClutterIMContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="clutter-im-context-set-cursor-location"></a><h3>clutter_im_context_set_cursor_location ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
clutter_im_context_set_cursor_location
                               (<em class="parameter"><code><a class="link" href="ClutterIMContext.html" title="ClutterIMContext"><span class="type">ClutterIMContext</span></a> *context</code></em>,
                                <em class="parameter"><code>const <a class="link" href="ClutterIMContext.html#ClutterIMRectangle" title="struct ClutterIMRectangle"><span class="type">ClutterIMRectangle</span></a> *area</code></em>);</pre>
<p>Notify the input method that a change in cursor
position has been made. The location is relative to the client
window.</p>
<div class="refsect3">
<a name="clutter-im-context-set-cursor-location.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="ClutterIMContext.html" title="ClutterIMContext"><span class="type">ClutterIMContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>area</p></td>
<td class="parameter_description"><p>new location</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="clutter-im-context-set-use-preedit"></a><h3>clutter_im_context_set_use_preedit ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
clutter_im_context_set_use_preedit (<em class="parameter"><code><a class="link" href="ClutterIMContext.html" title="ClutterIMContext"><span class="type">ClutterIMContext</span></a> *context</code></em>,
                                    <em class="parameter"><code><span class="type">gboolean</span> use_preedit</code></em>);</pre>
<p>Sets whether the IM context should use the preedit string
to display feedback. If <em class="parameter"><code>use_preedit</code></em>
 is FALSE (default
is TRUE), then the IM context may use some other method to display
feedback, such as displaying it in a child of the root window.</p>
<div class="refsect3">
<a name="clutter-im-context-set-use-preedit.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="ClutterIMContext.html" title="ClutterIMContext"><span class="type">ClutterIMContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>use_preedit</p></td>
<td class="parameter_description"><p>whether the IM context should use the preedit string.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="clutter-im-context-set-surrounding"></a><h3>clutter_im_context_set_surrounding ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
clutter_im_context_set_surrounding (<em class="parameter"><code><a class="link" href="ClutterIMContext.html" title="ClutterIMContext"><span class="type">ClutterIMContext</span></a> *context</code></em>,
                                    <em class="parameter"><code>const <span class="type">gchar</span> *text</code></em>,
                                    <em class="parameter"><code><span class="type">gint</span> len</code></em>,
                                    <em class="parameter"><code><span class="type">gint</span> cursor_index</code></em>);</pre>
<p>Sets surrounding context around the insertion point and preedit
string. This function is expected to be called in response to the
ClutterIMContext::retrieve_surrounding signal, and will likely have no
effect if called at other times.</p>
<div class="refsect3">
<a name="clutter-im-context-set-surrounding.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="ClutterIMContext.html" title="ClutterIMContext"><span class="type">ClutterIMContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>text</p></td>
<td class="parameter_description"><p>text surrounding the insertion point, as UTF-8.
the preedit string should not be included within
<em class="parameter"><code>text</code></em>
.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>len</p></td>
<td class="parameter_description"><p>the length of <em class="parameter"><code>text</code></em>
, or -1 if <em class="parameter"><code>text</code></em>
is nul-terminated</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>cursor_index</p></td>
<td class="parameter_description"><p>the byte index of the insertion cursor within <em class="parameter"><code>text</code></em>
.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="clutter-im-context-get-surrounding"></a><h3>clutter_im_context_get_surrounding ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
clutter_im_context_get_surrounding (<em class="parameter"><code><a class="link" href="ClutterIMContext.html" title="ClutterIMContext"><span class="type">ClutterIMContext</span></a> *context</code></em>,
                                    <em class="parameter"><code><span class="type">gchar</span> **text</code></em>,
                                    <em class="parameter"><code><span class="type">gint</span> *cursor_index</code></em>);</pre>
<p>Retrieves context around the insertion point. Input methods
typically want context in order to constrain input text based on
existing text; this is important for languages such as Thai where
only some sequences of characters are allowed.</p>
<p>This function is implemented by emitting the
ClutterIMContext::retrieve_surrounding signal on the input method; in
response to this signal, a widget should provide as much context as
is available, up to an entire paragraph, by calling
<a class="link" href="ClutterIMContext.html#clutter-im-context-set-surrounding" title="clutter_im_context_set_surrounding ()"><code class="function">clutter_im_context_set_surrounding()</code></a>. Note that there is no obligation
for a widget to respond to the ::retrieve_surrounding signal, so input
methods must be prepared to function without context.</p>
<div class="refsect3">
<a name="clutter-im-context-get-surrounding.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="ClutterIMContext.html" title="ClutterIMContext"><span class="type">ClutterIMContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>text</p></td>
<td class="parameter_description"><p>location to store a UTF-8 encoded string of text
holding context around the insertion point.
If the function returns <code class="literal">TRUE</code>, then you must free
the result stored in this location with <code class="function">g_free()</code>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>cursor_index</p></td>
<td class="parameter_description"><p>location to store byte index of the insertion cursor
within <em class="parameter"><code>text</code></em>
.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="clutter-im-context-get-surrounding.returns"></a><h4>Returns</h4>
<p> <code class="literal">TRUE</code> if surrounding text was provided; in this case
you must free the result stored in *text.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="clutter-im-context-delete-surrounding"></a><h3>clutter_im_context_delete_surrounding ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
clutter_im_context_delete_surrounding (<em class="parameter"><code><a class="link" href="ClutterIMContext.html" title="ClutterIMContext"><span class="type">ClutterIMContext</span></a> *context</code></em>,
                                       <em class="parameter"><code><span class="type">gint</span> offset</code></em>,
                                       <em class="parameter"><code><span class="type">gint</span> n_chars</code></em>);</pre>
<p>Asks the widget that the input context is attached to to delete
characters around the cursor position by emitting the
ClutterIMContext::delete_surrounding signal. Note that <em class="parameter"><code>offset</code></em>
 and <em class="parameter"><code>n_chars</code></em>

are in characters not in bytes which differs from the usage other
places in <a class="link" href="ClutterIMContext.html" title="ClutterIMContext"><span class="type">ClutterIMContext</span></a>.</p>
<p>In order to use this function, you should first call
<a class="link" href="ClutterIMContext.html#clutter-im-context-get-surrounding" title="clutter_im_context_get_surrounding ()"><code class="function">clutter_im_context_get_surrounding()</code></a> to get the current context, and
call this function immediately afterwards to make sure that you
know what you are deleting. You should also account for the fact
that even if the signal was handled, the input context might not
have deleted all the characters that were requested to be deleted.</p>
<p>This function is used by an input method that wants to make
subsitutions in the existing text in response to new input. It is
not useful for applications.</p>
<div class="refsect3">
<a name="clutter-im-context-delete-surrounding.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="ClutterIMContext.html" title="ClutterIMContext"><span class="type">ClutterIMContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>offset</p></td>
<td class="parameter_description"><p>offset from cursor position in chars;
a negative value means start before the cursor.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>n_chars</p></td>
<td class="parameter_description"><p>number of characters to delete.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="clutter-im-context-delete-surrounding.returns"></a><h4>Returns</h4>
<p> <code class="literal">TRUE</code> if the signal was handled.</p>
</div>
</div>
</div>
<div class="refsect1">
<a name="ClutterIMContext.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="ClutterIMRectangle"></a><h3>struct ClutterIMRectangle</h3>
<pre class="programlisting">struct ClutterIMRectangle {
  gint x;
  gint y;
  gint width;
  gint height;
};
</pre>
</div>
</div>
<div class="refsect1">
<a name="ClutterIMContext.signal-details"></a><h2>Signal Details</h2>
<div class="refsect2">
<a name="ClutterIMContext-commit"></a><h3>The <code class="literal">“commit”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="ClutterIMContext.html" title="ClutterIMContext"><span class="type">ClutterIMContext</span></a> *context,
               <span class="type">gchar</span>            *str,
               <span class="type">gpointer</span>          user_data)</pre>
<p>The ::commit signal is emitted when input method have some data to commit</p>
<div class="refsect3">
<a name="ClutterIMContext-commit.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>The context object that receive this signal</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>str</p></td>
<td class="parameter_description"><p>The UTF_8 string been committed</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p>Flags: Run Last</p>
</div>
<hr>
<div class="refsect2">
<a name="ClutterIMContext-delete-surrounding"></a><h3>The <code class="literal">“delete-surrounding”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
user_function (<a class="link" href="ClutterIMContext.html" title="ClutterIMContext"><span class="type">ClutterIMContext</span></a> *context,
               <span class="type">gint</span>              offset,
               <span class="type">gint</span>              n_chars,
               <span class="type">gpointer</span>          user_data)</pre>
<div class="refsect3">
<a name="ClutterIMContext-delete-surrounding.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>The context object that receive this signal</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>offset</p></td>
<td class="parameter_description"><p>offset from cursor position in chars;
a negative value means start before the cursor.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>n_chars</p></td>
<td class="parameter_description"><p>number of characters to delete.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p>Flags: Run Last</p>
</div>
<hr>
<div class="refsect2">
<a name="ClutterIMContext-preedit-changed"></a><h3>The <code class="literal">“preedit-changed”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="ClutterIMContext.html" title="ClutterIMContext"><span class="type">ClutterIMContext</span></a> *context,
               <span class="type">gpointer</span>          user_data)</pre>
<div class="refsect3">
<a name="ClutterIMContext-preedit-changed.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>The context object that receive this signal</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p>Flags: Run Last</p>
</div>
<hr>
<div class="refsect2">
<a name="ClutterIMContext-preedit-end"></a><h3>The <code class="literal">“preedit-end”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="ClutterIMContext.html" title="ClutterIMContext"><span class="type">ClutterIMContext</span></a> *context,
               <span class="type">gpointer</span>          user_data)</pre>
<div class="refsect3">
<a name="ClutterIMContext-preedit-end.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>The context object that receive this signal</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p>Flags: Run Last</p>
</div>
<hr>
<div class="refsect2">
<a name="ClutterIMContext-preedit-start"></a><h3>The <code class="literal">“preedit-start”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="ClutterIMContext.html" title="ClutterIMContext"><span class="type">ClutterIMContext</span></a> *context,
               <span class="type">gpointer</span>          user_data)</pre>
<div class="refsect3">
<a name="ClutterIMContext-preedit-start.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>The context object that receive this signal</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p>Flags: Run Last</p>
</div>
<hr>
<div class="refsect2">
<a name="ClutterIMContext-retrieve-surrounding"></a><h3>The <code class="literal">“retrieve-surrounding”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
user_function (<a class="link" href="ClutterIMContext.html" title="ClutterIMContext"><span class="type">ClutterIMContext</span></a> *context,
               <span class="type">gpointer</span>          user_data)</pre>
<div class="refsect3">
<a name="ClutterIMContext-retrieve-surrounding.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>The context object that receive this signal</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p>Flags: Run Last</p>
</div>
</div>
</div>
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