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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"><title>GtkTreeModelFilter</title><meta name="generator" content="DocBook XSL Stylesheets V1.73.2"><link rel="start" href="index.html" title="GTK+ Reference Manual"><link rel="up" href="TreeWidgetObjects.html" title="Tree, List and Icon Grid Widgets"><link rel="prev" href="GtkTreeModelSort.html" title="GtkTreeModelSort"><link rel="next" href="GtkCellLayout.html" title="GtkCellLayout"><meta name="generator" content="GTK-Doc V1.9 (XML mode)"><link rel="stylesheet" href="style.css" type="text/css"><link rel="part" href="gtk.html" title="Part I. GTK+ Overview"><link rel="part" href="gtkbase.html" title="Part II. GTK+ Core Reference"><link rel="part" href="gtkobjects.html" title="Part III. GTK+ Widgets and Objects"><link rel="chapter" href="ch01.html" title="Object Hierarchy"><link rel="chapter" href="ch02.html" title="Widget Gallery"><link 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href="TreeWidgetObjects.html"><img src="up.png" width="24" height="24" border="0" alt="Up"></a></td><td><a accesskey="h" href="index.html"><img src="home.png" width="24" height="24" border="0" alt="Home"></a></td><th width="100%" align="center">GTK+ Reference Manual</th><td><a accesskey="n" href="GtkCellLayout.html"><img src="right.png" width="24" height="24" border="0" alt="Next"></a></td></tr><tr><td colspan="5" class="shortcuts"><nobr><a href="#id3809141" class="shortcut">Top</a>  |  <a href="#id3809768" class="shortcut">Description</a>  |  <a href="#id3809660" class="shortcut">Object Hierarchy</a>  |  <a href="#id3809685" class="shortcut">Implemented Interfaces</a>  |  <a href="#id3809715" class="shortcut">Properties</a></nobr></td></tr></table><div class="refentry" lang="en"><a name="GtkTreeModelFilter"></a><div class="titlepage"></div><div class="refnamediv"><table width="100%"><tr><td valign="top"><h2><a name="id3809141"></a><span class="refentrytitle">GtkTreeModelFilter</span></h2><p>GtkTreeModelFilter — A GtkTreeModel which hides parts of an underlying tree model</p></td><td valign="top" align="right"></td></tr></table></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="synopsis">#include <gtk/gtk.h> <a class="link" href="GtkTreeModelFilter.html#GtkTreeModelFilter-struct">GtkTreeModelFilter</a>;<ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean">gboolean</a> (<a class="link" href="GtkTreeModelFilter.html#GtkTreeModelFilterVisibleFunc">*GtkTreeModelFilterVisibleFunc</a>) (<a class="link" href="GtkTreeModel.html" title="GtkTreeModel">GtkTreeModel</a> *model, <a class="link" href="GtkTreeModel.html#GtkTreeIter">GtkTreeIter</a> *iter, <ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer">gpointer</a> data);void (<a class="link" href="GtkTreeModelFilter.html#GtkTreeModelFilterModifyFunc">*GtkTreeModelFilterModifyFunc</a>) (<a class="link" href="GtkTreeModel.html" title="GtkTreeModel">GtkTreeModel</a> *model, <a class="link" href="GtkTreeModel.html#GtkTreeIter">GtkTreeIter</a> *iter, <ahref="/usr/share/gtk-doc/html/gobject/gobject-Generic-values.html#GValue">GValue</a> *value, <ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint">gint</a> column, <ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer">gpointer</a> data);<a class="link" href="GtkTreeModel.html" title="GtkTreeModel">GtkTreeModel</a>* <a class="link" href="GtkTreeModelFilter.html#gtk-tree-model-filter-new">gtk_tree_model_filter_new</a> (<a class="link" href="GtkTreeModel.html" title="GtkTreeModel">GtkTreeModel</a> *child_model, <a class="link" href="GtkTreeModel.html#GtkTreePath">GtkTreePath</a> *root);void <a class="link" href="GtkTreeModelFilter.html#gtk-tree-model-filter-set-visible-func">gtk_tree_model_filter_set_visible_func</a> (<a class="link" href="GtkTreeModelFilter.html" title="GtkTreeModelFilter">GtkTreeModelFilter</a> *filter, <a class="link" href="GtkTreeModelFilter.html#GtkTreeModelFilterVisibleFunc">GtkTreeModelFilterVisibleFunc</a> func, <ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer">gpointer</a> data, <a class="link" href="gtk-Types.html#GtkDestroyNotify">GtkDestroyNotify</a> destroy);void <a class="link" href="GtkTreeModelFilter.html#gtk-tree-model-filter-set-modify-func">gtk_tree_model_filter_set_modify_func</a> (<a class="link" href="GtkTreeModelFilter.html" title="GtkTreeModelFilter">GtkTreeModelFilter</a> *filter, <ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint">gint</a> n_columns, <ahref="/usr/share/gtk-doc/html/gobject/gobject-Type-Information.html#GType">GType</a> *types, <a class="link" href="GtkTreeModelFilter.html#GtkTreeModelFilterModifyFunc">GtkTreeModelFilterModifyFunc</a> func, <ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer">gpointer</a> data, <a class="link" href="gtk-Types.html#GtkDestroyNotify">GtkDestroyNotify</a> destroy);void <a class="link" href="GtkTreeModelFilter.html#gtk-tree-model-filter-set-visible-column">gtk_tree_model_filter_set_visible_column</a> (<a class="link" href="GtkTreeModelFilter.html" title="GtkTreeModelFilter">GtkTreeModelFilter</a> *filter, <ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint">gint</a> column);<a class="link" href="GtkTreeModel.html" title="GtkTreeModel">GtkTreeModel</a>* <a class="link" href="GtkTreeModelFilter.html#gtk-tree-model-filter-get-model">gtk_tree_model_filter_get_model</a> (<a class="link" href="GtkTreeModelFilter.html" title="GtkTreeModelFilter">GtkTreeModelFilter</a> *filter);<ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean">gboolean</a> <a class="link" href="GtkTreeModelFilter.html#gtk-tree-model-filter-convert-child-iter-to-iter">gtk_tree_model_filter_convert_child_iter_to_iter</a> (<a class="link" href="GtkTreeModelFilter.html" title="GtkTreeModelFilter">GtkTreeModelFilter</a> *filter, <a class="link" href="GtkTreeModel.html#GtkTreeIter">GtkTreeIter</a> *filter_iter, <a class="link" href="GtkTreeModel.html#GtkTreeIter">GtkTreeIter</a> *child_iter);void <a class="link" href="GtkTreeModelFilter.html#gtk-tree-model-filter-convert-iter-to-child-iter">gtk_tree_model_filter_convert_iter_to_child_iter</a> (<a class="link" href="GtkTreeModelFilter.html" title="GtkTreeModelFilter">GtkTreeModelFilter</a> *filter, <a class="link" href="GtkTreeModel.html#GtkTreeIter">GtkTreeIter</a> *child_iter, <a class="link" href="GtkTreeModel.html#GtkTreeIter">GtkTreeIter</a> *filter_iter);<a class="link" href="GtkTreeModel.html#GtkTreePath">GtkTreePath</a>* <a class="link" href="GtkTreeModelFilter.html#gtk-tree-model-filter-convert-child-path-to-path">gtk_tree_model_filter_convert_child_path_to_path</a> (<a class="link" href="GtkTreeModelFilter.html" title="GtkTreeModelFilter">GtkTreeModelFilter</a> *filter, <a class="link" href="GtkTreeModel.html#GtkTreePath">GtkTreePath</a> *child_path);<a class="link" href="GtkTreeModel.html#GtkTreePath">GtkTreePath</a>* <a class="link" href="GtkTreeModelFilter.html#gtk-tree-model-filter-convert-path-to-child-path">gtk_tree_model_filter_convert_path_to_child_path</a> (<a class="link" href="GtkTreeModelFilter.html" title="GtkTreeModelFilter">GtkTreeModelFilter</a> *filter, <a class="link" href="GtkTreeModel.html#GtkTreePath">GtkTreePath</a> *filter_path);void <a class="link" href="GtkTreeModelFilter.html#gtk-tree-model-filter-refilter">gtk_tree_model_filter_refilter</a> (<a class="link" href="GtkTreeModelFilter.html" title="GtkTreeModelFilter">GtkTreeModelFilter</a> *filter);void <a class="link" href="GtkTreeModelFilter.html#gtk-tree-model-filter-clear-cache">gtk_tree_model_filter_clear_cache</a> (<a class="link" href="GtkTreeModelFilter.html" title="GtkTreeModelFilter">GtkTreeModelFilter</a> *filter);</pre></div><div class="refsect1" lang="en"><a name="id3809660"></a><h2>Object Hierarchy</h2><pre class="synopsis"> <ahref="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject">GObject</a> +----GtkTreeModelFilter</pre></div><div class="refsect1" lang="en"><a name="id3809685"></a><h2>Implemented Interfaces</h2><p>GtkTreeModelFilter implements <a class="link" href="GtkTreeModel.html" title="GtkTreeModel">GtkTreeModel</a> and <a class="link" href="gtk-GtkTreeView-drag-and-drop.html#GtkTreeDragSource">GtkTreeDragSource</a>.</p></div><div class="refsect1" lang="en"><a name="id3809715"></a><h2>Properties</h2><pre class="synopsis"> "<a class="link" href="GtkTreeModelFilter.html#GtkTreeModelFilter--child-model">child-model</a>" <a class="link" href="GtkTreeModel.html" title="GtkTreeModel">GtkTreeModel</a> : Read / Write / Construct Only "<a class="link" href="GtkTreeModelFilter.html#GtkTreeModelFilter--virtual-root">virtual-root</a>" <a class="link" href="GtkTreeModel.html#GtkTreePath">GtkTreePath</a> : Read / Write / Construct Only</pre></div><div class="refsect1" lang="en"><a name="id3809768"></a><h2>Description</h2><p>A <a class="link" href="GtkTreeModelFilter.html" title="GtkTreeModelFilter"><span class="type">GtkTreeModelFilter</span></a> is a tree model which wraps another tree model,and can do the following things:</p><div class="itemizedlist"><ul type="disc"><li><p>Filter specific rows, based on data from a "visible column", a columnstoring booleans indicating whether the row should be filtered or not,or based on the return value of a "visible function", which gets amodel, iter and user_data and returns a boolean indicating whether therow should be filtered or not.</p></li><li><p>Modify the "appearance" of the model, using a modify function. This is extremely powerful and allows for just changingsome values and also for creating a completely different model based onthe given child model. </p></li><li><p>Set a different root node, also known as a "virtual root". You can pass in a <a class="link" href="GtkTreeModel.html#GtkTreePath"><span class="type">GtkTreePath</span></a> indicating the root node for the filter at construction time.</p></li></ul></div><p></p></div><div class="refsect1" lang="en"><a name="id3809827"></a><h2>Details</h2><div class="refsect2" lang="en"><a name="id3809837"></a><h3><a name="GtkTreeModelFilter-struct"></a>GtkTreeModelFilter</h3><a class="indexterm" name="id3809851"></a><pre class="programlisting">typedef struct _GtkTreeModelFilter GtkTreeModelFilter;</pre><p>The GtkTreeModelFilter struct contains only private fields.</p></div><hr><div class="refsect2" lang="en"><a name="id3809868"></a><h3><a name="GtkTreeModelFilterVisibleFunc"></a>GtkTreeModelFilterVisibleFunc ()</h3><a class="indexterm" name="id3809880"></a><pre class="programlisting"><ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean">gboolean</a> (*GtkTreeModelFilterVisibleFunc) (<a class="link" href="GtkTreeModel.html" title="GtkTreeModel">GtkTreeModel</a> *model, <a class="link" href="GtkTreeModel.html#GtkTreeIter">GtkTreeIter</a> *iter, <ahref="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer">gpointer</a> data);</pre><p>A function which decides whether the row indicated by <em class="parameter"><code>iter</code></em> is visible.</p><div class="variablelist"><table border="0"><col align="left" valign="top"><tbody><tr><td><p><span class="term"><em class="parameter"><code>model</code></em> :</span></p></td><td>the child model of the <a class="link" href="GtkTreeModelFilter.html" title="GtkTreeModelFilter"><span class="type">GtkTreeModelFilter</span></a></td></tr><tr><td><p><span class="term"><em class="parameter"><code>iter</code></em> :</span></p></td><td>a <a class="link" href="GtkTreeModel.html#GtkTreeIter"><span class="type">GtkTreeIter</span></a> pointing to the row in <em class="parameter"><code>model</code></em> whose visibility is determined</td></tr><tr><td><p><span class="term"><em class="parameter"><code>data</code></em> :</span></p></td><td>user data given to <a class="link" href="GtkTreeModelFilter.html#gtk-tree-model-filter-set-visible-func"><code class="function">gtk_tree_model_filter_set_visible_func()</code></a></td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td>Whether the row indicated by <em class="parameter"><code>iter</code></em> is visible.</td></tr></tbody></table></div></div><hr><div class="refsect2" lang="en"><a name="id3810029"></a><h3><a name="GtkTreeModelFilterModifyFunc"></a>GtkTreeModelFilterModifyFunc ()</h3>⌨️ 快捷键说明
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