<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>GtkBin: GTK+ 3 Reference Manual</title> <meta name="generator" content="DocBook XSL Stylesheets Vsnapshot"> <link rel="home" href="index.html" title="GTK+ 3 Reference Manual"> <link rel="up" href="AbstractObjects.html" title="Abstract Base Classes"> <link rel="prev" href="GtkContainer.html" title="GtkContainer"> <link rel="next" href="GtkMenuShell.html" title="GtkMenuShell"> <meta name="generator" content="GTK-Doc V1.33.1 (XML mode)"> <link rel="stylesheet" href="style.css" type="text/css"> </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="#GtkBin.description" class="shortcut">Description</a></span><span id="nav_hierarchy"> <span class="dim">|</span> <a href="#GtkBin.object-hierarchy" class="shortcut">Object Hierarchy</a></span><span id="nav_interfaces"> <span class="dim">|</span> <a href="#GtkBin.implemented-interfaces" class="shortcut">Implemented Interfaces</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="AbstractObjects.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td> <td><a accesskey="p" href="GtkContainer.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td> <td><a accesskey="n" href="GtkMenuShell.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td> </tr></table> <div class="refentry"> <a name="GtkBin"></a><div class="titlepage"></div> <div class="refnamediv"><table width="100%"><tr> <td valign="top"> <h2><span class="refentrytitle"><a name="GtkBin.top_of_page"></a>GtkBin</span></h2> <p>GtkBin — A container with just one child</p> </td> <td class="gallery_image" valign="top" align="right"></td> </tr></table></div> <div class="refsect1"> <a name="GtkBin.functions"></a><h2>Functions</h2> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="functions_proto_type"> <col class="functions_proto_name"> </colgroup> <tbody><tr> <td class="function_type"> <a class="link" href="GtkWidget.html" title="GtkWidget"><span class="returnvalue">GtkWidget</span></a> * </td> <td class="function_name"> <a class="link" href="GtkBin.html#gtk-bin-get-child" title="gtk_bin_get_child ()">gtk_bin_get_child</a> <span class="c_punctuation">()</span> </td> </tr></tbody> </table></div> </div> <div class="refsect1"> <a name="GtkBin.other"></a><h2>Types and Values</h2> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="other_proto_type"> <col class="other_proto_name"> </colgroup> <tbody> <tr> <td class="datatype_keyword">struct</td> <td class="function_name"><a class="link" href="GtkBin.html#GtkBin-struct" title="struct GtkBin">GtkBin</a></td> </tr> <tr> <td class="datatype_keyword">struct</td> <td class="function_name"><a class="link" href="GtkBin.html#GtkBinClass" title="struct GtkBinClass">GtkBinClass</a></td> </tr> </tbody> </table></div> </div> <div class="refsect1"> <a name="GtkBin.object-hierarchy"></a><h2>Object Hierarchy</h2> <pre class="screen"> GObject <span class="lineart">╰──</span> GInitiallyUnowned <span class="lineart">╰──</span> <a class="link" href="GtkWidget.html" title="GtkWidget">GtkWidget</a> <span class="lineart">╰──</span> <a class="link" href="GtkContainer.html" title="GtkContainer">GtkContainer</a> <span class="lineart">╰──</span> GtkBin <span class="lineart">├──</span> <a class="link" href="GtkWindow.html" title="GtkWindow">GtkWindow</a> <span class="lineart">├──</span> <a class="link" href="GtkActionBar.html" title="GtkActionBar">GtkActionBar</a> <span class="lineart">├──</span> <a class="link" href="GtkAlignment.html" title="GtkAlignment">GtkAlignment</a> <span class="lineart">├──</span> <a class="link" href="GtkComboBox.html" title="GtkComboBox">GtkComboBox</a> <span class="lineart">├──</span> <a class="link" href="GtkFrame.html" title="GtkFrame">GtkFrame</a> <span class="lineart">├──</span> <a class="link" href="GtkButton.html" title="GtkButton">GtkButton</a> <span class="lineart">├──</span> <a class="link" href="GtkMenuItem.html" title="GtkMenuItem">GtkMenuItem</a> <span class="lineart">├──</span> <a class="link" href="GtkEventBox.html" title="GtkEventBox">GtkEventBox</a> <span class="lineart">├──</span> <a class="link" href="GtkExpander.html" title="GtkExpander">GtkExpander</a> <span class="lineart">├──</span> <a class="link" href="GtkFlowBox.html#GtkFlowBoxChild">GtkFlowBoxChild</a> <span class="lineart">├──</span> <a class="link" href="GtkHandleBox.html" title="GtkHandleBox">GtkHandleBox</a> <span class="lineart">├──</span> <a class="link" href="GtkListBox.html#GtkListBoxRow">GtkListBoxRow</a> <span class="lineart">├──</span> <a class="link" href="GtkToolItem.html" title="GtkToolItem">GtkToolItem</a> <span class="lineart">├──</span> <a class="link" href="GtkOverlay.html" title="GtkOverlay">GtkOverlay</a> <span class="lineart">├──</span> <a class="link" href="GtkScrolledWindow.html" title="GtkScrolledWindow">GtkScrolledWindow</a> <span class="lineart">├──</span> <a class="link" href="GtkPopover.html" title="GtkPopover">GtkPopover</a> <span class="lineart">├──</span> <a class="link" href="GtkRevealer.html" title="GtkRevealer">GtkRevealer</a> <span class="lineart">├──</span> <a class="link" href="GtkSearchBar.html" title="GtkSearchBar">GtkSearchBar</a> <span class="lineart">├──</span> <a class="link" href="GtkStackSidebar.html" title="GtkStackSidebar">GtkStackSidebar</a> <span class="lineart">╰──</span> <a class="link" href="GtkViewport.html" title="GtkViewport">GtkViewport</a> </pre> </div> <div class="refsect1"> <a name="GtkBin.implemented-interfaces"></a><h2>Implemented Interfaces</h2> <p> GtkBin implements AtkImplementorIface and <a class="link" href="GtkBuildable.html" title="GtkBuildable">GtkBuildable</a>.</p> </div> <div class="refsect1"> <a name="GtkBin.includes"></a><h2>Includes</h2> <pre class="synopsis">#include <gtk/gtk.h> </pre> </div> <div class="refsect1"> <a name="GtkBin.description"></a><h2>Description</h2> <p>The <a class="link" href="GtkBin.html" title="GtkBin"><span class="type">GtkBin</span></a> widget is a container with just one child. It is not very useful itself, but it is useful for deriving subclasses, since it provides common code needed for handling a single child widget.</p> <p>Many GTK+ widgets are subclasses of <a class="link" href="GtkBin.html" title="GtkBin"><span class="type">GtkBin</span></a>, including <a class="link" href="GtkWindow.html" title="GtkWindow"><span class="type">GtkWindow</span></a>, <a class="link" href="GtkButton.html" title="GtkButton"><span class="type">GtkButton</span></a>, <a class="link" href="GtkFrame.html" title="GtkFrame"><span class="type">GtkFrame</span></a>, <a class="link" href="GtkHandleBox.html" title="GtkHandleBox"><span class="type">GtkHandleBox</span></a> or <a class="link" href="GtkScrolledWindow.html" title="GtkScrolledWindow"><span class="type">GtkScrolledWindow</span></a>.</p> </div> <div class="refsect1"> <a name="GtkBin.functions_details"></a><h2>Functions</h2> <div class="refsect2"> <a name="gtk-bin-get-child"></a><h3>gtk_bin_get_child ()</h3> <pre class="programlisting"><a class="link" href="GtkWidget.html" title="GtkWidget"><span class="returnvalue">GtkWidget</span></a> * gtk_bin_get_child (<em class="parameter"><code><a class="link" href="GtkBin.html" title="GtkBin"><span class="type">GtkBin</span></a> *bin</code></em>);</pre> <p>Gets the child of the <a class="link" href="GtkBin.html" title="GtkBin"><span class="type">GtkBin</span></a>, or <code class="literal">NULL</code> if the bin contains no child widget. The returned widget does not have a reference added, so you do not need to unref it.</p> <div class="refsect3"> <a name="gtk-bin-get-child.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>bin</p></td> <td class="parameter_description"><p>a <a class="link" href="GtkBin.html" title="GtkBin"><span class="type">GtkBin</span></a></p></td> <td class="parameter_annotations"> </td> </tr></tbody> </table></div> </div> <div class="refsect3"> <a name="gtk-bin-get-child.returns"></a><h4>Returns</h4> <p>the child of <em class="parameter"><code>bin</code></em> , or <code class="literal">NULL</code> if it does not have a child. </p> <p><span class="annotation">[<acronym title="The data is owned by the callee, which is responsible of freeing it."><span class="acronym">transfer none</span></acronym>][<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></p> </div> </div> </div> <div class="refsect1"> <a name="GtkBin.other_details"></a><h2>Types and Values</h2> <div class="refsect2"> <a name="GtkBin-struct"></a><h3>struct GtkBin</h3> <pre class="programlisting">struct GtkBin;</pre> </div> <hr> <div class="refsect2"> <a name="GtkBinClass"></a><h3>struct GtkBinClass</h3> <pre class="programlisting">struct GtkBinClass { GtkContainerClass parent_class; }; </pre> <div class="refsect3"> <a name="GtkBinClass.members"></a><h4>Members</h4> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="300px" class="struct_members_name"> <col class="struct_members_description"> <col width="200px" class="struct_members_annotations"> </colgroup> <tbody></tbody> </table></div> </div> </div> </div> </div> <div class="footer"> <hr>Generated by GTK-Doc V1.33.1</div> </body> </html>