Graphics.UI.Gtk.Abstract.Bin

A container with just one child

Detail

The Bin 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.

Many Gtk+ widgets are subclasses of Bin, including Window, Button, Frame, HandleBox, and ScrolledWindow.

Class Hierarchy

| GObject
| +----Object
| +----Widget
| +----Container
| +----Bin
| +----Window
| +----Alignment
| +----Frame
| +----Button
| +----Item
| +----ComboBox
| +----EventBox
| +----Expander
| +----HandleBox
| +----ToolItem
| +----ScrolledWindow
| +----Viewport

Types

data Bin

Instances

Eq Bin

Ord Bin

GObjectClass Bin

BinClass Bin

ContainerClass Bin

WidgetClass Bin

class ContainerClass o => BinClass o

Instances

BinClass SeparatorToolItem

BinClass RadioToolButton

BinClass ToggleToolButton

BinClass MenuToolButton

BinClass ToolButton

BinClass ToolItem

BinClass ComboBox

BinClass Expander

BinClass Viewport

BinClass ScrolledWindow

BinClass HandleBox

BinClass EventBox

BinClass MessageDialog

BinClass FontSelectionDialog

BinClass FileChooserDialog

BinClass ColorSelectionDialog

BinClass AboutDialog

BinClass Dialog

BinClass OffscreenWindow

BinClass Assistant

BinClass Window

BinClass Overlay

BinClass SeparatorMenuItem

BinClass ImageMenuItem

BinClass TearoffMenuItem

BinClass RadioMenuItem

BinClass CheckMenuItem

BinClass MenuItem

BinClass FontButton

BinClass ColorButton

BinClass RadioButton

BinClass CheckButton

BinClass ToggleButton

BinClass LinkButton

BinClass VolumeButton

BinClass ScaleButton

BinClass Button

BinClass AspectFrame

BinClass Frame

BinClass Alignment

BinClass Bin

BinClass Plug

castToBin :: GObjectClass obj => obj -> Bin

gTypeBin :: GType

toBin :: BinClass o => o -> Bin

Methods

binGetChild

Arguments

:: BinClass self

=> self

-> IO (Maybe Widget)

returns pointer to child of the Bin

Gets the child of the Bin, or Nothing if the bin contains no child widget.