<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Graphics.UI.Gtk.Abstract.Bin</title><link href="ocean.css" rel="stylesheet" type="text/css" title="Ocean" /><script src="haddock-util.js" type="text/javascript"></script><script type="text/javascript">//<![CDATA[
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</script></head><body><div id="package-header"><ul class="links" id="page-menu"><li><a href="src/Graphics-UI-Gtk-Abstract-Bin.html">Source</a></li><li><a href="index.html">Contents</a></li><li><a href="doc-index.html">Index</a></li></ul><p class="caption">gtk-0.12.0: Binding to the Gtk+ graphical user interface library.</p></div><div id="content"><div id="module-header"><table class="info"><tr><th>Portability</th><td>portable (depends on GHC)</td></tr><tr><th>Stability</th><td>provisional</td></tr><tr><th>Maintainer</th><td>gtk2hs-users@lists.sourceforge.net</td></tr></table><p class="caption">Graphics.UI.Gtk.Abstract.Bin</p></div><div id="table-of-contents"><p class="caption">Contents</p><ul><li><a href="#g:1">Detail
</a></li><li><a href="#g:2">Class Hierarchy
</a></li><li><a href="#g:3">Types
</a></li><li><a href="#g:4">Methods
</a></li></ul></div><div id="description"><p class="caption">Description</p><div class="doc"><p>A container with just one child
</p></div></div><div id="synopsis"><p id="control.syn" class="caption expander" onclick="toggleSection('syn')">Synopsis</p><ul id="section.syn" class="hide" onclick="toggleSection('syn')"><li class="src short"><span class="keyword">data</span> <a href="#t:Bin">Bin</a> </li><li class="src short"><span class="keyword">class</span> <a href="Graphics-UI-Gtk-Abstract-Container.html#t:ContainerClass">ContainerClass</a> o => <a href="#t:BinClass">BinClass</a> o </li><li class="src short"><a href="#v:castToBin">castToBin</a> :: <a href="/usr/share/doc/ghc/html/libraries/glib-0.12.0/System-Glib-GObject.html#t:GObjectClass">GObjectClass</a> obj => obj -> <a href="Graphics-UI-Gtk-Abstract-Bin.html#t:Bin">Bin</a></li><li class="src short"><a href="#v:gTypeBin">gTypeBin</a> :: <a href="Graphics-UI-Gtk-Abstract-Widget.html#t:GType">GType</a></li><li class="src short"><a href="#v:toBin">toBin</a> :: <a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> o => o -> <a href="Graphics-UI-Gtk-Abstract-Bin.html#t:Bin">Bin</a></li><li class="src short"><a href="#v:binGetChild">binGetChild</a> :: <a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> self => self -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> (<a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Maybe.html#t:Maybe">Maybe</a> <a href="Graphics-UI-Gtk-Abstract-Widget.html#t:Widget">Widget</a>)</li></ul></div><div id="interface"><h1 id="g:1">Detail
</h1><div class="doc"><p>The <code><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:Bin">Bin</a></code> 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 <code><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:Bin">Bin</a></code>, including <code><a href="Graphics-UI-Gtk-Windows-Window.html#t:Window">Window</a></code>, <code><a href="Graphics-UI-Gtk-Buttons-Button.html#t:Button">Button</a></code>,
<code><a href="Graphics-UI-Gtk-Ornaments-Frame.html#t:Frame">Frame</a></code>, <code><a href="Graphics-UI-Gtk-Misc-HandleBox.html#t:HandleBox">HandleBox</a></code>, and <code><a href="Graphics-UI-Gtk-Scrolling-ScrolledWindow.html#t:ScrolledWindow">ScrolledWindow</a></code>.
</p></div><h1 id="g:2">Class Hierarchy
</h1><div class="doc"><pre>
| <code><a href="/usr/share/doc/ghc/html/libraries/glib-0.12.0/System-Glib-GObject.html#t:GObject">GObject</a></code>
| +----<code><a href="Graphics-UI-Gtk-Abstract-Object.html#t:Object">Object</a></code>
| +----<code><a href="Graphics-UI-Gtk-Abstract-Widget.html#t:Widget">Widget</a></code>
| +----<code><a href="Graphics-UI-Gtk-Abstract-Container.html#t:Container">Container</a></code>
| +----Bin
| +----<code><a href="Graphics-UI-Gtk-Windows-Window.html#t:Window">Window</a></code>
| +----<code><a href="Graphics-UI-Gtk-Layout-Alignment.html#t:Alignment">Alignment</a></code>
| +----<code><a href="Graphics-UI-Gtk-Ornaments-Frame.html#t:Frame">Frame</a></code>
| +----<code><a href="Graphics-UI-Gtk-Buttons-Button.html#t:Button">Button</a></code>
| +----<code>Item</code>
| +----<code><a href="Graphics-UI-Gtk-MenuComboToolbar-ComboBox.html#t:ComboBox">ComboBox</a></code>
| +----<code><a href="Graphics-UI-Gtk-Misc-EventBox.html#t:EventBox">EventBox</a></code>
| +----<code><a href="Graphics-UI-Gtk-Layout-Expander.html#t:Expander">Expander</a></code>
| +----<code><a href="Graphics-UI-Gtk-Misc-HandleBox.html#t:HandleBox">HandleBox</a></code>
| +----<code><a href="Graphics-UI-Gtk-MenuComboToolbar-ToolItem.html#t:ToolItem">ToolItem</a></code>
| +----<code><a href="Graphics-UI-Gtk-Scrolling-ScrolledWindow.html#t:ScrolledWindow">ScrolledWindow</a></code>
| +----<code><a href="Graphics-UI-Gtk-Misc-Viewport.html#t:Viewport">Viewport</a></code>
</pre></div><h1 id="g:3">Types
</h1><div class="top"><p class="src"><span class="keyword">data</span> <a name="t:Bin" class="def">Bin</a> <a href="src/Graphics-UI-Gtk-Types.html#Bin" class="link">Source</a></p><div class="subs instances"><p id="control.i:Bin" class="caption collapser" onclick="toggleSection('i:Bin')">Instances</p><div id="section.i:Bin" class="show"><table><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Eq.html#t:Eq">Eq</a> <a href="Graphics-UI-Gtk-Abstract-Bin.html#t:Bin">Bin</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Ord.html#t:Ord">Ord</a> <a href="Graphics-UI-Gtk-Abstract-Bin.html#t:Bin">Bin</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/glib-0.12.0/System-Glib-GObject.html#t:GObjectClass">GObjectClass</a> <a href="Graphics-UI-Gtk-Abstract-Bin.html#t:Bin">Bin</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-Abstract-Bin.html#t:Bin">Bin</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Container.html#t:ContainerClass">ContainerClass</a> <a href="Graphics-UI-Gtk-Abstract-Bin.html#t:Bin">Bin</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Widget.html#t:WidgetClass">WidgetClass</a> <a href="Graphics-UI-Gtk-Abstract-Bin.html#t:Bin">Bin</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Object.html#t:ObjectClass">ObjectClass</a> <a href="Graphics-UI-Gtk-Abstract-Bin.html#t:Bin">Bin</a></td><td class="doc empty"> </td></tr></table></div></div></div><div class="top"><p class="src"><span class="keyword">class</span> <a href="Graphics-UI-Gtk-Abstract-Container.html#t:ContainerClass">ContainerClass</a> o => <a name="t:BinClass" class="def">BinClass</a> o <a href="src/Graphics-UI-Gtk-Types.html#BinClass" class="link">Source</a></p><div class="subs instances"><p id="control.i:BinClass" class="caption collapser" onclick="toggleSection('i:BinClass')">Instances</p><div id="section.i:BinClass" class="show"><table><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-MenuComboToolbar-SeparatorToolItem.html#t:SeparatorToolItem">SeparatorToolItem</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-MenuComboToolbar-RadioToolButton.html#t:RadioToolButton">RadioToolButton</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-MenuComboToolbar-ToggleToolButton.html#t:ToggleToolButton">ToggleToolButton</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-MenuComboToolbar-MenuToolButton.html#t:MenuToolButton">MenuToolButton</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-MenuComboToolbar-ToolButton.html#t:ToolButton">ToolButton</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-MenuComboToolbar-ToolItem.html#t:ToolItem">ToolItem</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-MenuComboToolbar-ComboBoxEntry.html#t:ComboBoxEntry">ComboBoxEntry</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-MenuComboToolbar-ComboBox.html#t:ComboBox">ComboBox</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-Layout-Expander.html#t:Expander">Expander</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-Misc-Viewport.html#t:Viewport">Viewport</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-Scrolling-ScrolledWindow.html#t:ScrolledWindow">ScrolledWindow</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-Misc-HandleBox.html#t:HandleBox">HandleBox</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-Misc-EventBox.html#t:EventBox">EventBox</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-Embedding-Plug.html#t:Plug">Plug</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-Windows-MessageDialog.html#t:MessageDialog">MessageDialog</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> InputDialog</td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-Selectors-FontSelectionDialog.html#t:FontSelectionDialog">FontSelectionDialog</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-Selectors-FileChooserDialog.html#t:FileChooserDialog">FileChooserDialog</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-Selectors-FileSelection.html#t:FileSelection">FileSelection</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-Selectors-ColorSelectionDialog.html#t:ColorSelectionDialog">ColorSelectionDialog</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-Windows-AboutDialog.html#t:AboutDialog">AboutDialog</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-Windows-Dialog.html#t:Dialog">Dialog</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-Windows-OffscreenWindow.html#t:OffscreenWindow">OffscreenWindow</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-Windows-Assistant.html#t:Assistant">Assistant</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-Windows-Window.html#t:Window">Window</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> ListItem</td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-MenuComboToolbar-SeparatorMenuItem.html#t:SeparatorMenuItem">SeparatorMenuItem</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-MenuComboToolbar-ImageMenuItem.html#t:ImageMenuItem">ImageMenuItem</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-MenuComboToolbar-TearoffMenuItem.html#t:TearoffMenuItem">TearoffMenuItem</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-MenuComboToolbar-RadioMenuItem.html#t:RadioMenuItem">RadioMenuItem</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-MenuComboToolbar-CheckMenuItem.html#t:CheckMenuItem">CheckMenuItem</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-MenuComboToolbar-MenuItem.html#t:MenuItem">MenuItem</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> Item</td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-MenuComboToolbar-OptionMenu.html#t:OptionMenu">OptionMenu</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-Selectors-FontButton.html#t:FontButton">FontButton</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-Selectors-ColorButton.html#t:ColorButton">ColorButton</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-Buttons-RadioButton.html#t:RadioButton">RadioButton</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-Buttons-CheckButton.html#t:CheckButton">CheckButton</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-Buttons-ToggleButton.html#t:ToggleButton">ToggleButton</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-Buttons-LinkButton.html#t:LinkButton">LinkButton</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-Buttons-VolumeButton.html#t:VolumeButton">VolumeButton</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-Buttons-ScaleButton.html#t:ScaleButton">ScaleButton</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-Buttons-Button.html#t:Button">Button</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-Layout-AspectFrame.html#t:AspectFrame">AspectFrame</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-Ornaments-Frame.html#t:Frame">Frame</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-Layout-Alignment.html#t:Alignment">Alignment</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> <a href="Graphics-UI-Gtk-Abstract-Bin.html#t:Bin">Bin</a></td><td class="doc empty"> </td></tr></table></div></div></div><div class="top"><p class="src"><a name="v:castToBin" class="def">castToBin</a> :: <a href="/usr/share/doc/ghc/html/libraries/glib-0.12.0/System-Glib-GObject.html#t:GObjectClass">GObjectClass</a> obj => obj -> <a href="Graphics-UI-Gtk-Abstract-Bin.html#t:Bin">Bin</a><a href="src/Graphics-UI-Gtk-Types.html#castToBin" class="link">Source</a></p></div><div class="top"><p class="src"><a name="v:gTypeBin" class="def">gTypeBin</a> :: <a href="Graphics-UI-Gtk-Abstract-Widget.html#t:GType">GType</a><a href="src/Graphics-UI-Gtk-Types.html#gTypeBin" class="link">Source</a></p></div><div class="top"><p class="src"><a name="v:toBin" class="def">toBin</a> :: <a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> o => o -> <a href="Graphics-UI-Gtk-Abstract-Bin.html#t:Bin">Bin</a><a href="src/Graphics-UI-Gtk-Types.html#toBin" class="link">Source</a></p></div><h1 id="g:4">Methods
</h1><div class="top"><p class="src"><a name="v:binGetChild" class="def">binGetChild</a><a href="src/Graphics-UI-Gtk-Abstract-Bin.html#binGetChild" class="link">Source</a></p><div class="subs arguments"><p class="caption">Arguments</p><table><tr><td class="src">:: <a href="Graphics-UI-Gtk-Abstract-Bin.html#t:BinClass">BinClass</a> self</td><td class="doc empty"> </td></tr><tr><td class="src">=> self</td><td class="doc empty"> </td></tr><tr><td class="src">-> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> (<a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Maybe.html#t:Maybe">Maybe</a> <a href="Graphics-UI-Gtk-Abstract-Widget.html#t:Widget">Widget</a>)</td><td class="doc"><p>returns pointer to child of the <code><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:Bin">Bin</a></code>
</p></td></tr></table></div><div class="doc"><p>Gets the child of the <code><a href="Graphics-UI-Gtk-Abstract-Bin.html#t:Bin">Bin</a></code>, or <code>Nothing</code> if the bin contains no child
widget.
</p></div></div></div></div><div id="footer"><p>Produced by <a href="http://www.haskell.org/haddock/">Haddock</a> version 2.9.2</p></div></body></html>
