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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<a name="GtkSourceBuffer"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle"><a name="GtkSourceBuffer.top_of_page"></a>GtkSourceBuffer</span></h2>
<p>GtkSourceBuffer — Text buffer object for <a class="link" href="GtkSourceView.html" title="GtkSourceView"><span class="type">GtkSourceView</span></a></p>
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<div class="refsynopsisdiv">
<a name="GtkSourceBuffer.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">
#include <gtksourceview/gtksourcebuffer.h>
<a class="link" href="GtkSourceBuffer.html#GtkSourceBuffer-struct" title="GtkSourceBuffer">GtkSourceBuffer</a>;
<a class="link" href="GtkSourceBuffer.html#GtkSourceBufferClass" title="GtkSourceBufferClass">GtkSourceBufferClass</a>;
<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a>* <a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-new" title="gtk_source_buffer_new ()">gtk_source_buffer_new</a> (GtkTextTagTable *table);
<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a>* <a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-new-with-language" title="gtk_source_buffer_new_with_language ()">gtk_source_buffer_new_with_language</a> (<a class="link" href="GtkSourceLanguage.html" title="GtkSourceLanguage">GtkSourceLanguage</a> *language);
void <a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-set-highlight-syntax" title="gtk_source_buffer_set_highlight_syntax ()">gtk_source_buffer_set_highlight_syntax</a>
(<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer,
gboolean highlight);
gboolean <a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-get-highlight-syntax" title="gtk_source_buffer_get_highlight_syntax ()">gtk_source_buffer_get_highlight_syntax</a>
(<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer);
void <a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-set-language" title="gtk_source_buffer_set_language ()">gtk_source_buffer_set_language</a> (<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer,
<a class="link" href="GtkSourceLanguage.html" title="GtkSourceLanguage">GtkSourceLanguage</a> *language);
<a class="link" href="GtkSourceLanguage.html" title="GtkSourceLanguage">GtkSourceLanguage</a>* <a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-get-language" title="gtk_source_buffer_get_language ()">gtk_source_buffer_get_language</a> (<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer);
void <a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-set-highlight-matching-brackets" title="gtk_source_buffer_set_highlight_matching_brackets ()">gtk_source_buffer_set_highlight_matching_brackets</a>
(<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer,
gboolean highlight);
gboolean <a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-get-highlight-matching-brackets" title="gtk_source_buffer_get_highlight_matching_brackets ()">gtk_source_buffer_get_highlight_matching_brackets</a>
(<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer);
void <a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-set-style-scheme" title="gtk_source_buffer_set_style_scheme ()">gtk_source_buffer_set_style_scheme</a> (<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer,
<a class="link" href="GtkSourceStyleScheme.html" title="GtkSourceStyleScheme">GtkSourceStyleScheme</a> *scheme);
<a class="link" href="GtkSourceStyleScheme.html" title="GtkSourceStyleScheme">GtkSourceStyleScheme</a>* <a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-get-style-scheme" title="gtk_source_buffer_get_style_scheme ()">gtk_source_buffer_get_style_scheme</a>
(<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer);
gint <a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-get-max-undo-levels" title="gtk_source_buffer_get_max_undo_levels ()">gtk_source_buffer_get_max_undo_levels</a>
(<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer);
void <a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-set-max-undo-levels" title="gtk_source_buffer_set_max_undo_levels ()">gtk_source_buffer_set_max_undo_levels</a>
(<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer,
gint max_undo_levels);
void <a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-redo" title="gtk_source_buffer_redo ()">gtk_source_buffer_redo</a> (<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer);
void <a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-undo" title="gtk_source_buffer_undo ()">gtk_source_buffer_undo</a> (<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer);
gboolean <a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-can-redo" title="gtk_source_buffer_can_redo ()">gtk_source_buffer_can_redo</a> (<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer);
gboolean <a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-can-undo" title="gtk_source_buffer_can_undo ()">gtk_source_buffer_can_undo</a> (<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer);
void <a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-begin-not-undoable-action" title="gtk_source_buffer_begin_not_undoable_action ()">gtk_source_buffer_begin_not_undoable_action</a>
(<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer);
void <a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-end-not-undoable-action" title="gtk_source_buffer_end_not_undoable_action ()">gtk_source_buffer_end_not_undoable_action</a>
(<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer);
<a class="link" href="GtkSourceMark.html" title="GtkSourceMark">GtkSourceMark</a>* <a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-create-source-mark" title="gtk_source_buffer_create_source_mark ()">gtk_source_buffer_create_source_mark</a>
(<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer,
const gchar *name,
const gchar *category,
const GtkTextIter *where);
GSList* <a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-get-source-marks-at-line" title="gtk_source_buffer_get_source_marks_at_line ()">gtk_source_buffer_get_source_marks_at_line</a>
(<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer,
gint line,
const gchar *category);
GSList* <a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-get-source-marks-at-iter" title="gtk_source_buffer_get_source_marks_at_iter ()">gtk_source_buffer_get_source_marks_at_iter</a>
(<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer,
GtkTextIter *iter,
const gchar *category);
void <a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-remove-source-marks" title="gtk_source_buffer_remove_source_marks ()">gtk_source_buffer_remove_source_marks</a>
(<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer,
const GtkTextIter *start,
const GtkTextIter *end,
const gchar *category);
gboolean <a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-forward-iter-to-source-mark" title="gtk_source_buffer_forward_iter_to_source_mark ()">gtk_source_buffer_forward_iter_to_source_mark</a>
(<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer,
GtkTextIter *iter,
const gchar *category);
gboolean <a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-backward-iter-to-source-mark" title="gtk_source_buffer_backward_iter_to_source_mark ()">gtk_source_buffer_backward_iter_to_source_mark</a>
(<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer,
GtkTextIter *iter,
const gchar *category);
void <a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-ensure-highlight" title="gtk_source_buffer_ensure_highlight ()">gtk_source_buffer_ensure_highlight</a> (<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer,
const GtkTextIter *start,
const GtkTextIter *end);
</pre>
</div>
<div class="refsect1" lang="en">
<a name="GtkSourceBuffer.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="synopsis">
GObject
+----GtkTextBuffer
+----GtkSourceBuffer
</pre>
</div>
<div class="refsect1" lang="en">
<a name="GtkSourceBuffer.properties"></a><h2>Properties</h2>
<pre class="synopsis">
"<a class="link" href="GtkSourceBuffer.html#GtkSourceBuffer--can-redo" title='The "can-redo" property'>can-redo</a>" gboolean : Read
"<a class="link" href="GtkSourceBuffer.html#GtkSourceBuffer--can-undo" title='The "can-undo" property'>can-undo</a>" gboolean : Read
"<a class="link" href="GtkSourceBuffer.html#GtkSourceBuffer--highlight-matching-brackets" title='The "highlight-matching-brackets" property'>highlight-matching-brackets</a>" gboolean : Read / Write
"<a class="link" href="GtkSourceBuffer.html#GtkSourceBuffer--highlight-syntax" title='The "highlight-syntax" property'>highlight-syntax</a>" gboolean : Read / Write
"<a class="link" href="GtkSourceBuffer.html#GtkSourceBuffer--language" title='The "language" property'>language</a>" <a class="link" href="GtkSourceLanguage.html" title="GtkSourceLanguage">GtkSourceLanguage</a>* : Read / Write
"<a class="link" href="GtkSourceBuffer.html#GtkSourceBuffer--max-undo-levels" title='The "max-undo-levels" property'>max-undo-levels</a>" gint : Read / Write
"<a class="link" href="GtkSourceBuffer.html#GtkSourceBuffer--style-scheme" title='The "style-scheme" property'>style-scheme</a>" <a class="link" href="GtkSourceStyleScheme.html" title="GtkSourceStyleScheme">GtkSourceStyleScheme</a>* : Read / Write
</pre>
</div>
<div class="refsect1" lang="en">
<a name="GtkSourceBuffer.signals"></a><h2>Signals</h2>
<pre class="synopsis">
"<a class="link" href="GtkSourceBuffer.html#GtkSourceBuffer-highlight-updated" title='The "highlight-updated" signal'>highlight-updated</a>" : Run Last
"<a class="link" href="GtkSourceBuffer.html#GtkSourceBuffer-source-mark-updated" title='The "source-mark-updated" signal'>source-mark-updated</a>" : Run Last
</pre>
</div>
<div class="refsect1" lang="en">
<a name="GtkSourceBuffer.description"></a><h2>Description</h2>
<p>
The <a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer"><span class="type">GtkSourceBuffer</span></a> object is the model for <a class="link" href="GtkSourceView.html" title="GtkSourceView"><span class="type">GtkSourceView</span></a> widgets.
It extends the <span class="type">GtkTextBuffer</span> object by adding features necessary to
display and edit source code: syntax highlighting, bracket matching
and markers. It also implements support for undo/redo operations.
</p>
<p>
To create a <a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer"><span class="type">GtkSourceBuffer</span></a> use <a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-new" title="gtk_source_buffer_new ()"><code class="function">gtk_source_buffer_new()</code></a> or
<a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-new-with-language" title="gtk_source_buffer_new_with_language ()"><code class="function">gtk_source_buffer_new_with_language()</code></a>. The second form is just a
convenience function which allows you to initially set a
<a class="link" href="GtkSourceLanguage.html" title="GtkSourceLanguage"><span class="type">GtkSourceLanguage</span></a>.
</p>
<p>
By default highlighting is enabled, but you can disable it with
<a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-set-highlight-syntax" title="gtk_source_buffer_set_highlight_syntax ()"><code class="function">gtk_source_buffer_set_highlight_syntax()</code></a>.
</p>
</div>
<div class="refsect1" lang="en">
<a name="GtkSourceBuffer.details"></a><h2>Details</h2>
<div class="refsect2" lang="en">
<a name="GtkSourceBuffer-struct"></a><h3>GtkSourceBuffer</h3>
<pre class="programlisting">typedef struct _GtkSourceBuffer GtkSourceBuffer;</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="GtkSourceBufferClass"></a><h3>GtkSourceBufferClass</h3>
<pre class="programlisting">typedef struct {
GtkTextBufferClass parent_class;
/* Padding for future expansion */
void (*_gtk_source_reserved1) (void);
void (*_gtk_source_reserved2) (void);
void (*_gtk_source_reserved3) (void);
void (*_gtk_source_reserved4) (void);
void (*_gtk_source_reserved5) (void);
void (*_gtk_source_reserved6) (void);
} GtkSourceBufferClass;
</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="gtk-source-buffer-new"></a><h3>gtk_source_buffer_new ()</h3>
<pre class="programlisting"><a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a>* gtk_source_buffer_new (GtkTextTagTable *table);</pre>
<p>
Creates a new source buffer.</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>table</code></em> :</span></p></td>
<td> a <span class="type">GtkTextTagTable</span>, or <code class="literal">NULL</code> to create a new one.
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> a new source buffer.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="gtk-source-buffer-new-with-language"></a><h3>gtk_source_buffer_new_with_language ()</h3>
<pre class="programlisting"><a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a>* gtk_source_buffer_new_with_language (<a class="link" href="GtkSourceLanguage.html" title="GtkSourceLanguage">GtkSourceLanguage</a> *language);</pre>
<p>
Creates a new source buffer using the highlighting patterns in
<em class="parameter"><code>language</code></em>. This is equivalent to creating a new source buffer with
a new tag table and then calling <a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-set-language" title="gtk_source_buffer_set_language ()"><code class="function">gtk_source_buffer_set_language()</code></a>.</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>language</code></em> :</span></p></td>
<td> a <a class="link" href="GtkSourceLanguage.html" title="GtkSourceLanguage"><span class="type">GtkSourceLanguage</span></a>.
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> a new source buffer which will highlight text
according to the highlighting patterns in <em class="parameter"><code>language</code></em>.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="gtk-source-buffer-set-highlight-syntax"></a><h3>gtk_source_buffer_set_highlight_syntax ()</h3>
<pre class="programlisting">void gtk_source_buffer_set_highlight_syntax
(<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer,
gboolean highlight);</pre>
<p>
Controls whether syntax is highlighted in the buffer. If <em class="parameter"><code>highlight</code></em>
is <code class="literal">TRUE</code>, the text will be highlighted according to the syntax
patterns specified in the language set with
<a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-set-language" title="gtk_source_buffer_set_language ()"><code class="function">gtk_source_buffer_set_language()</code></a>. If <em class="parameter"><code>highlight</code></em> is <code class="literal">FALSE</code>, syntax highlighting
is disabled and all the GtkTextTag objects that have been added by the
syntax highlighting engine are removed from the buffer.</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>buffer</code></em> :</span></p></td>
<td> a <a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer"><span class="type">GtkSourceBuffer</span></a>.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>highlight</code></em> :</span></p></td>
<td> <code class="literal">TRUE</code> to enable syntax highlighting, <code class="literal">FALSE</code> to disable it.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="gtk-source-buffer-get-highlight-syntax"></a><h3>gtk_source_buffer_get_highlight_syntax ()</h3>
<pre class="programlisting">gboolean gtk_source_buffer_get_highlight_syntax
(<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer);</pre>
<p>
Determines whether syntax highlighting is activated in the source
buffer.</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>buffer</code></em> :</span></p></td>
<td> a <a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer"><span class="type">GtkSourceBuffer</span></a>.
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> <code class="literal">TRUE</code> if syntax highlighting is enabled, <code class="literal">FALSE</code> otherwise.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="gtk-source-buffer-set-language"></a><h3>gtk_source_buffer_set_language ()</h3>
<pre class="programlisting">void gtk_source_buffer_set_language (<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer,
<a class="link" href="GtkSourceLanguage.html" title="GtkSourceLanguage">GtkSourceLanguage</a> *language);</pre>
<p>
Associate a <a class="link" href="GtkSourceLanguage.html" title="GtkSourceLanguage"><span class="type">GtkSourceLanguage</span></a> with the source buffer. If <em class="parameter"><code>language</code></em> is
not-<code class="literal">NULL</code> and syntax highlighting is enabled (see <a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-set-highlight-syntax" title="gtk_source_buffer_set_highlight_syntax ()"><code class="function">gtk_source_buffer_set_highlight_syntax()</code></a>),
the syntax patterns defined in <em class="parameter"><code>language</code></em> will be used to highlight the text
contained in the buffer. If <em class="parameter"><code>language</code></em> is <code class="literal">NULL</code>, the text contained in the
buffer is not highlighted.
</p>
<p>
The buffer holds a reference to <em class="parameter"><code>language</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>buffer</code></em> :</span></p></td>
<td> a <a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer"><span class="type">GtkSourceBuffer</span></a>.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>language</code></em> :</span></p></td>
<td> a <a class="link" href="GtkSourceLanguage.html" title="GtkSourceLanguage"><span class="type">GtkSourceLanguage</span></a> to set, or <code class="literal">NULL</code>.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="gtk-source-buffer-get-language"></a><h3>gtk_source_buffer_get_language ()</h3>
<pre class="programlisting"><a class="link" href="GtkSourceLanguage.html" title="GtkSourceLanguage">GtkSourceLanguage</a>* gtk_source_buffer_get_language (<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer);</pre>
<p>
Returns the <a class="link" href="GtkSourceLanguage.html" title="GtkSourceLanguage"><span class="type">GtkSourceLanguage</span></a> associated with the buffer,
see <a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-set-language" title="gtk_source_buffer_set_language ()"><code class="function">gtk_source_buffer_set_language()</code></a>. The returned object should not be
unreferenced by the user.</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>buffer</code></em> :</span></p></td>
<td> a <a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer"><span class="type">GtkSourceBuffer</span></a>.
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> <a class="link" href="GtkSourceLanguage.html" title="GtkSourceLanguage"><span class="type">GtkSourceLanguage</span></a> associated with the buffer, or <code class="literal">NULL</code>.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="gtk-source-buffer-set-highlight-matching-brackets"></a><h3>gtk_source_buffer_set_highlight_matching_brackets ()</h3>
<pre class="programlisting">void gtk_source_buffer_set_highlight_matching_brackets
(<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer,
gboolean highlight);</pre>
<p>
Controls the bracket match highlighting function in the buffer. If
activated, when you position your cursor over a bracket character
(a parenthesis, a square bracket, etc.) the matching opening or
closing bracket character will be highlighted. You can specify the
style with the <code class="function">gtk_source_buffer_set_bracket_match_style()</code>
function.</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>buffer</code></em> :</span></p></td>
<td> a <a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer"><span class="type">GtkSourceBuffer</span></a>.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>highlight</code></em> :</span></p></td>
<td> <code class="literal">TRUE</code> if you want matching brackets highlighted.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="gtk-source-buffer-get-highlight-matching-brackets"></a><h3>gtk_source_buffer_get_highlight_matching_brackets ()</h3>
<pre class="programlisting">gboolean gtk_source_buffer_get_highlight_matching_brackets
(<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer);</pre>
<p>
Determines whether bracket match highlighting is activated for the
source buffer.</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>buffer</code></em> :</span></p></td>
<td> a <a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer"><span class="type">GtkSourceBuffer</span></a>.
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> <code class="literal">TRUE</code> if the source buffer will highlight matching
brackets.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="gtk-source-buffer-set-style-scheme"></a><h3>gtk_source_buffer_set_style_scheme ()</h3>
<pre class="programlisting">void gtk_source_buffer_set_style_scheme (<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer,
<a class="link" href="GtkSourceStyleScheme.html" title="GtkSourceStyleScheme">GtkSourceStyleScheme</a> *scheme);</pre>
<p>
Sets style scheme used by the buffer.</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>buffer</code></em> :</span></p></td>
<td> a <a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer"><span class="type">GtkSourceBuffer</span></a>.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>scheme</code></em> :</span></p></td>
<td> style scheme.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="gtk-source-buffer-get-style-scheme"></a><h3>gtk_source_buffer_get_style_scheme ()</h3>
<pre class="programlisting"><a class="link" href="GtkSourceStyleScheme.html" title="GtkSourceStyleScheme">GtkSourceStyleScheme</a>* gtk_source_buffer_get_style_scheme
(<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer);</pre>
<p>
Returns the <a class="link" href="GtkSourceStyleScheme.html" title="GtkSourceStyleScheme"><span class="type">GtkSourceStyleScheme</span></a> currently used in <em class="parameter"><code>buffer</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>buffer</code></em> :</span></p></td>
<td> a <a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer"><span class="type">GtkSourceBuffer</span></a>.
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> the <a class="link" href="GtkSourceStyleScheme.html" title="GtkSourceStyleScheme"><span class="type">GtkSourceStyleScheme</span></a> set by
<a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-set-style-scheme" title="gtk_source_buffer_set_style_scheme ()"><code class="function">gtk_source_buffer_set_style_scheme()</code></a>, or <code class="literal">NULL</code>.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="gtk-source-buffer-get-max-undo-levels"></a><h3>gtk_source_buffer_get_max_undo_levels ()</h3>
<pre class="programlisting">gint gtk_source_buffer_get_max_undo_levels
(<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer);</pre>
<p>
Determines the number of undo levels the buffer will track for
buffer edits.</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>buffer</code></em> :</span></p></td>
<td> a <a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer"><span class="type">GtkSourceBuffer</span></a>.
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> the maximum number of possible undo levels or
-1 if no limit is set.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="gtk-source-buffer-set-max-undo-levels"></a><h3>gtk_source_buffer_set_max_undo_levels ()</h3>
<pre class="programlisting">void gtk_source_buffer_set_max_undo_levels
(<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer,
gint max_undo_levels);</pre>
<p>
Sets the number of undo levels for user actions the buffer will
track. If the number of user actions exceeds the limit set by this
function, older actions will be discarded.
</p>
<p>
If <em class="parameter"><code>max_undo_levels</code></em> is -1, no limit is set.
</p>
<p>
A new action is started whenever the function
<code class="function">gtk_text_buffer_begin_user_action()</code> is called. In general, this
happens whenever the user presses any key which modifies the
buffer, but the undo manager will try to merge similar consecutive
actions, such as multiple character insertions into one action.
But, inserting a newline does start a new action.</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>buffer</code></em> :</span></p></td>
<td> a <a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer"><span class="type">GtkSourceBuffer</span></a>.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>max_undo_levels</code></em> :</span></p></td>
<td> the desired maximum number of undo levels.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="gtk-source-buffer-redo"></a><h3>gtk_source_buffer_redo ()</h3>
<pre class="programlisting">void gtk_source_buffer_redo (<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer);</pre>
<p>
Redoes the last undo operation. Use <a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-can-redo" title="gtk_source_buffer_can_redo ()"><code class="function">gtk_source_buffer_can_redo()</code></a>
to check whether a call to this function will have any effect.</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>buffer</code></em> :</span></p></td>
<td> a <a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer"><span class="type">GtkSourceBuffer</span></a>.
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="gtk-source-buffer-undo"></a><h3>gtk_source_buffer_undo ()</h3>
<pre class="programlisting">void gtk_source_buffer_undo (<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer);</pre>
<p>
Undoes the last user action which modified the buffer. Use
<a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-can-undo" title="gtk_source_buffer_can_undo ()"><code class="function">gtk_source_buffer_can_undo()</code></a> to check whether a call to this
function will have any effect.
</p>
<p>
Actions are defined as groups of operations between a call to
<code class="function">gtk_text_buffer_begin_user_action()</code> and
<code class="function">gtk_text_buffer_end_user_action()</code>, or sequences of similar edits
(inserts or deletes) on the same line.</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>buffer</code></em> :</span></p></td>
<td> a <a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer"><span class="type">GtkSourceBuffer</span></a>.
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="gtk-source-buffer-can-redo"></a><h3>gtk_source_buffer_can_redo ()</h3>
<pre class="programlisting">gboolean gtk_source_buffer_can_redo (<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer);</pre>
<p>
Determines whether a source buffer can redo the last action
(i.e. if the last operation was an undo).</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>buffer</code></em> :</span></p></td>
<td> a <a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer"><span class="type">GtkSourceBuffer</span></a>.
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> <code class="literal">TRUE</code> if a redo is possible.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="gtk-source-buffer-can-undo"></a><h3>gtk_source_buffer_can_undo ()</h3>
<pre class="programlisting">gboolean gtk_source_buffer_can_undo (<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer);</pre>
<p>
Determines whether a source buffer can undo the last action.</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>buffer</code></em> :</span></p></td>
<td> a <a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer"><span class="type">GtkSourceBuffer</span></a>.
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> <code class="literal">TRUE</code> if it's possible to undo the last action.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="gtk-source-buffer-begin-not-undoable-action"></a><h3>gtk_source_buffer_begin_not_undoable_action ()</h3>
<pre class="programlisting">void gtk_source_buffer_begin_not_undoable_action
(<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer);</pre>
<p>
Marks the beginning of a not undoable action on the buffer,
disabling the undo manager. Typically you would call this function
before initially setting the contents of the buffer (e.g. when
loading a file in a text editor).
</p>
<p>
You may nest <a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-begin-not-undoable-action" title="gtk_source_buffer_begin_not_undoable_action ()"><code class="function">gtk_source_buffer_begin_not_undoable_action()</code></a> /
<a class="link" href="GtkSourceBuffer.html#gtk-source-buffer-end-not-undoable-action" title="gtk_source_buffer_end_not_undoable_action ()"><code class="function">gtk_source_buffer_end_not_undoable_action()</code></a> blocks.</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>buffer</code></em> :</span></p></td>
<td> a <a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer"><span class="type">GtkSourceBuffer</span></a>.
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="gtk-source-buffer-end-not-undoable-action"></a><h3>gtk_source_buffer_end_not_undoable_action ()</h3>
<pre class="programlisting">void gtk_source_buffer_end_not_undoable_action
(<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer);</pre>
<p>
Marks the end of a not undoable action on the buffer. When the
last not undoable block is closed through the call to this
function, the list of undo actions is cleared and the undo manager
is re-enabled.</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>buffer</code></em> :</span></p></td>
<td> a <a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer"><span class="type">GtkSourceBuffer</span></a>.
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="gtk-source-buffer-create-source-mark"></a><h3>gtk_source_buffer_create_source_mark ()</h3>
<pre class="programlisting"><a class="link" href="GtkSourceMark.html" title="GtkSourceMark">GtkSourceMark</a>* gtk_source_buffer_create_source_mark
(<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer,
const gchar *name,
const gchar *category,
const GtkTextIter *where);</pre>
<p>
Creates a source mark in the <em class="parameter"><code>buffer</code></em> of category <em class="parameter"><code>category</code></em>. A source mark is
a <span class="type">GtkTextMark</span> but organised into categories. Depending on the category
a pixbuf can be specified that will be displayed along the line of the mark.
</p>
<p>
Like a <span class="type">GtkTextMark</span>, a <a class="link" href="GtkSourceMark.html" title="GtkSourceMark"><span class="type">GtkSourceMark</span></a> can be anonymous if the
passed <em class="parameter"><code>name</code></em> is <code class="literal">NULL</code>. Also, the buffer owns the marks so you
shouldn't unreference it.
</p>
<p>
Marks always have left gravity and are moved to the beginning of
the line when the user deletes the line they were in.
</p>
<p>
Typical uses for a source mark are bookmarks, breakpoints, current
executing instruction indication in a source file, etc..</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>buffer</code></em> :</span></p></td>
<td> a <a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer"><span class="type">GtkSourceBuffer</span></a>.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td>
<td> the name of the mark, or <code class="literal">NULL</code>.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>category</code></em> :</span></p></td>
<td> a string defining the mark category.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>where</code></em> :</span></p></td>
<td> location to place the mark.
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> a new <a class="link" href="GtkSourceMark.html" title="GtkSourceMark"><span class="type">GtkSourceMark</span></a>, owned by the buffer.
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.2
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="gtk-source-buffer-get-source-marks-at-line"></a><h3>gtk_source_buffer_get_source_marks_at_line ()</h3>
<pre class="programlisting">GSList* gtk_source_buffer_get_source_marks_at_line
(<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer,
gint line,
const gchar *category);</pre>
<p>
Returns the list of marks of the given category at <em class="parameter"><code>line</code></em>.
If <em class="parameter"><code>category</code></em> is NULL, all marks at <em class="parameter"><code>line</code></em> are returned.</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>buffer</code></em> :</span></p></td>
<td> a <a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer"><span class="type">GtkSourceBuffer</span></a>.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>line</code></em> :</span></p></td>
<td> a line number.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>category</code></em> :</span></p></td>
<td> category to search for or <code class="literal">NULL</code>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> a newly allocated <span class="type">GSList</span>.
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.2
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="gtk-source-buffer-get-source-marks-at-iter"></a><h3>gtk_source_buffer_get_source_marks_at_iter ()</h3>
<pre class="programlisting">GSList* gtk_source_buffer_get_source_marks_at_iter
(<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer,
GtkTextIter *iter,
const gchar *category);</pre>
<p>
Returns the list of marks of the given category at <em class="parameter"><code>iter</code></em>. If <em class="parameter"><code>category</code></em>
is <code class="literal">NULL</code> it returns all marks at <em class="parameter"><code>iter</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>buffer</code></em> :</span></p></td>
<td> a <a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer"><span class="type">GtkSourceBuffer</span></a>.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>iter</code></em> :</span></p></td>
<td> an iterator.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>category</code></em> :</span></p></td>
<td> category to search for or <code class="literal">NULL</code>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> a newly allocated <span class="type">GSList</span>.
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.2
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="gtk-source-buffer-remove-source-marks"></a><h3>gtk_source_buffer_remove_source_marks ()</h3>
<pre class="programlisting">void gtk_source_buffer_remove_source_marks
(<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer,
const GtkTextIter *start,
const GtkTextIter *end,
const gchar *category);</pre>
<p>
Remove all marks of <em class="parameter"><code>category</code></em> between <em class="parameter"><code>start</code></em> and <em class="parameter"><code>end</code></em> from the buffer.
If <em class="parameter"><code>category</code></em> is NULL, all marks in the range will be removed.</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>buffer</code></em> :</span></p></td>
<td> a <a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer"><span class="type">GtkSourceBuffer</span></a>.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>start</code></em> :</span></p></td>
<td> a <span class="type">GtkTextIter</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>end</code></em> :</span></p></td>
<td> a <span class="type">GtkTextIter</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>category</code></em> :</span></p></td>
<td> category to search for or NULL
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.2
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="gtk-source-buffer-forward-iter-to-source-mark"></a><h3>gtk_source_buffer_forward_iter_to_source_mark ()</h3>
<pre class="programlisting">gboolean gtk_source_buffer_forward_iter_to_source_mark
(<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer,
GtkTextIter *iter,
const gchar *category);</pre>
<p>
Moves <em class="parameter"><code>iter</code></em> to the position of the next <a class="link" href="GtkSourceMark.html" title="GtkSourceMark"><span class="type">GtkSourceMark</span></a> of the given
<em class="parameter"><code>category</code></em>. Returns <span class="type">TRUE</span> if <em class="parameter"><code>iter</code></em> was moved. If <em class="parameter"><code>category</code></em> is NULL, the
next source mark can be of any category.</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>buffer</code></em> :</span></p></td>
<td> a <a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer"><span class="type">GtkSourceBuffer</span></a>.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>iter</code></em> :</span></p></td>
<td> an iterator.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>category</code></em> :</span></p></td>
<td> category to search for or <code class="literal">NULL</code>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> whether iter moved.
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.2
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="gtk-source-buffer-backward-iter-to-source-mark"></a><h3>gtk_source_buffer_backward_iter_to_source_mark ()</h3>
<pre class="programlisting">gboolean gtk_source_buffer_backward_iter_to_source_mark
(<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer,
GtkTextIter *iter,
const gchar *category);</pre>
<p>
Moves <em class="parameter"><code>iter</code></em> to the position of the previous <a class="link" href="GtkSourceMark.html" title="GtkSourceMark"><span class="type">GtkSourceMark</span></a> of the given
category. Returns <span class="type">TRUE</span> if <em class="parameter"><code>iter</code></em> was moved. If <em class="parameter"><code>category</code></em> is NULL, the
previous source mark can be of any category.</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>buffer</code></em> :</span></p></td>
<td> a <a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer"><span class="type">GtkSourceBuffer</span></a>.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>iter</code></em> :</span></p></td>
<td> an iterator.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>category</code></em> :</span></p></td>
<td> category to search for or <code class="literal">NULL</code>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> whether iter moved.
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.2
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="gtk-source-buffer-ensure-highlight"></a><h3>gtk_source_buffer_ensure_highlight ()</h3>
<pre class="programlisting">void gtk_source_buffer_ensure_highlight (<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer,
const GtkTextIter *start,
const GtkTextIter *end);</pre>
<p>
Forces buffer to analyze and highlight the given area synchronously.
</p>
<p>
</p>
<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Note</h3>
<p>
This is a potentially slow operation and should be used only
when you need to make sure that some text not currently
visible is highlighted, for instance before printing.
</p>
</div>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>buffer</code></em> :</span></p></td>
<td> a <a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer"><span class="type">GtkSourceBuffer</span></a>.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>start</code></em> :</span></p></td>
<td> start of the area to highlight.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>end</code></em> :</span></p></td>
<td> end of the area to highlight.
</td>
</tr>
</tbody>
</table></div>
</div>
</div>
<div class="refsect1" lang="en">
<a name="GtkSourceBuffer.property-details"></a><h2>Property Details</h2>
<div class="refsect2" lang="en">
<a name="GtkSourceBuffer--can-redo"></a><h3>The <code class="literal">"can-redo"</code> property</h3>
<pre class="programlisting"> "can-redo" gboolean : Read</pre>
<p>Whether Redo operation is possible.</p>
<p>Default value: FALSE</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="GtkSourceBuffer--can-undo"></a><h3>The <code class="literal">"can-undo"</code> property</h3>
<pre class="programlisting"> "can-undo" gboolean : Read</pre>
<p>Whether Undo operation is possible.</p>
<p>Default value: FALSE</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="GtkSourceBuffer--highlight-matching-brackets"></a><h3>The <code class="literal">"highlight-matching-brackets"</code> property</h3>
<pre class="programlisting"> "highlight-matching-brackets" gboolean : Read / Write</pre>
<p>
Whether to highlight matching brackets in the buffer.</p>
<p>
</p>
<p>Default value: TRUE</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="GtkSourceBuffer--highlight-syntax"></a><h3>The <code class="literal">"highlight-syntax"</code> property</h3>
<pre class="programlisting"> "highlight-syntax" gboolean : Read / Write</pre>
<p>
Whether to highlight syntax in the buffer.</p>
<p>
</p>
<p>Default value: TRUE</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="GtkSourceBuffer--language"></a><h3>The <code class="literal">"language"</code> property</h3>
<pre class="programlisting"> "language" <a class="link" href="GtkSourceLanguage.html" title="GtkSourceLanguage">GtkSourceLanguage</a>* : Read / Write</pre>
<p>Language object to get highlighting patterns from.</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="GtkSourceBuffer--max-undo-levels"></a><h3>The <code class="literal">"max-undo-levels"</code> property</h3>
<pre class="programlisting"> "max-undo-levels" gint : Read / Write</pre>
<p>
Number of undo levels for the buffer. -1 means no limit.</p>
<p>
</p>
<p>Allowed values: >= -1</p>
<p>Default value: 1000</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="GtkSourceBuffer--style-scheme"></a><h3>The <code class="literal">"style-scheme"</code> property</h3>
<pre class="programlisting"> "style-scheme" <a class="link" href="GtkSourceStyleScheme.html" title="GtkSourceStyleScheme">GtkSourceStyleScheme</a>* : Read / Write</pre>
<p>
Style scheme. It contains styles for syntax highlighting, optionally
foreground, background, cursor color, current line color, and matching
brackets style.</p>
<p>
</p>
</div>
</div>
<div class="refsect1" lang="en">
<a name="GtkSourceBuffer.signal-details"></a><h2>Signal Details</h2>
<div class="refsect2" lang="en">
<a name="GtkSourceBuffer-highlight-updated"></a><h3>The <code class="literal">"highlight-updated"</code> signal</h3>
<pre class="programlisting">void user_function (<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *sourcebuffer,
GtkTextIter *arg1,
GtkTextIter *arg2,
gpointer user_data) : Run Last</pre>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>sourcebuffer</code></em> :</span></p></td>
<td>the object which received the signal.
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>arg1</code></em> :</span></p></td>
<td>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>arg2</code></em> :</span></p></td>
<td>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td>
<td>user data set when the signal handler was connected.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="GtkSourceBuffer-source-mark-updated"></a><h3>The <code class="literal">"source-mark-updated"</code> signal</h3>
<pre class="programlisting">void user_function (<a class="link" href="GtkSourceBuffer.html" title="GtkSourceBuffer">GtkSourceBuffer</a> *buffer,
GtkTextMark *arg1,
gpointer user_data) : Run Last</pre>
<p>
The ::source_mark_updated signal is emitted each time
a mark is added to, moved or removed from the <em class="parameter"><code>buffer</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>buffer</code></em> :</span></p></td>
<td> the buffer that received the signal
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td>
<td>user data set when the signal handler was connected.</td>
</tr>
</tbody>
</table></div>
</div>
</div>
<div class="refsect1" lang="en">
<a name="GtkSourceBuffer.see-also"></a><h2>See Also</h2>
<p>
There is an introduction document
describing the basic concepts of the buffer/view interactions.
</p>
<p>
Check <span class="type">GtkTextBuffer</span> for information about the base buffer; and
<a class="link" href="GtkSourceView.html" title="GtkSourceView"><span class="type">GtkSourceView</span></a> for examples on setting up the buffer to be displayed
in a view widget.
</p>
</div>
</div>
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