gtk-0.12.2: Binding to the Gtk+ graphical user interface library.

Portability | portable (depends on GHC)
Stability | provisional
Maintainer | gtk2hs-users@lists.sourceforge.net

Graphics.UI.Gtk.Abstract.Bin

Contents

- Detail
- Class Hierarchy
- Types
- Methods

Description

A container with just one child

Synopsis

- data Bin
- class ContainerClass o => BinClass o
- castToBin :: GObjectClass obj => obj -> Bin
- gTypeBin :: GType
- toBin :: BinClass o => o -> Bin
- binGetChild :: BinClass self => self -> IO (Maybe Widget)

# 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 |
ObjectClass Bin |

class ContainerClass o => BinClass o

Instances

BinClass SeparatorToolItem |
BinClass RadioToolButton |
BinClass ToggleToolButton |
BinClass MenuToolButton |
BinClass ToolButton |
BinClass ToolItem |
BinClass ComboBoxEntry |
BinClass ComboBox |
BinClass Expander |
BinClass Viewport |
BinClass ScrolledWindow |
BinClass HandleBox |
BinClass EventBox |
BinClass Plug |
BinClass MessageDialog |
BinClass InputDialog |
BinClass FontSelectionDialog |
BinClass FileChooserDialog |
BinClass FileSelection |
BinClass ColorSelectionDialog |
BinClass AboutDialog |
BinClass Dialog |
BinClass OffscreenWindow |
BinClass Assistant |
BinClass Window |
BinClass ListItem |
BinClass SeparatorMenuItem |
BinClass ImageMenuItem |
BinClass TearoffMenuItem |
BinClass RadioMenuItem |
BinClass CheckMenuItem |
BinClass MenuItem |
BinClass Item |
BinClass OptionMenu |
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 |

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.