## Documentation

Table of Contents
Class Inheritance Tree
Widget Screenshots
Package groups

## Index

Package: Expander

- Goto spec source

# Description

    package Gtk.Expander is

A container that can hide its child.
gtk-expanded

# Packages

### Implements_Buildable (new Glib.Types.Implements)

    package Implements_Buildable is new Glib.Types.Implements
         (Gtk.Buildable.Gtk_Buildable, Gtk_Expander_Record, Gtk_Expander);

# Classes

### Gtk_Expander_Record

- Goto declaration in source

    type Gtk_Expander_Record is new Gtk_Bin_Record with null record;

#### Ancestors:

Gtk.Bin.Gtk_Bin_Record
Gtk.Container.Gtk_Container_Record
Gtk.Widget.Gtk_Widget_Record
Glib.Object.GObject_Record

#### Primitive operations:

Get_Expanded

- To API doc
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Get_Label

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Get_Label_Fill

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Get_Label_Widget

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Get_Spacing

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Get_Use_Markup

- To API doc
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Get_Use_Underline

- To API doc
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Glib.Object.Deallocate

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(Inherited)
Glib.Object.Get_Type

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(Inherited)
Glib.Object.Notify

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(Inherited)
Glib.Object.Ref

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(Inherited)
Glib.Object.Ref_Sink

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(Inherited)
Glib.Object.Unref

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(Inherited)
Gtk.Bin.Get_Child

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(Inherited)
Gtk.Container.Add

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(Inherited)
Gtk.Container.Check_Resize

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(Inherited)
Gtk.Container.Child_Get_Property

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(Inherited)
Gtk.Container.Child_Set_Property

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(Inherited)
Gtk.Container.Child_Type

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(Inherited)
Gtk.Container.Forall

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(Inherited)
Gtk.Container.Foreach

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(Inherited)
Gtk.Container.Get_Border_Width

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(Inherited)
Gtk.Container.Get_Children

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(Inherited)
Gtk.Container.Get_Focus_Chain

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(Inherited)
Gtk.Container.Get_Focus_Child

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(Inherited)
Gtk.Container.Get_Focus_Hadjustment

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(Inherited)
Gtk.Container.Get_Focus_Vadjustment

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(Inherited)
Gtk.Container.Get_Resize_Mode

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(Inherited)
Gtk.Container.Propagate_Expose

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(Inherited)
Gtk.Container.Remove

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(Inherited)
Gtk.Container.Resize_Children

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(Inherited)
Gtk.Container.Set_Border_Width

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(Inherited)
Gtk.Container.Set_Focus_Chain

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(Inherited)
Gtk.Container.Set_Focus_Child

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(Inherited)
Gtk.Container.Set_Focus_Hadjustment

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(Inherited)
Gtk.Container.Set_Focus_Vadjustment

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(Inherited)
Gtk.Container.Set_Reallocate_Redraws

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(Inherited)
Gtk.Container.Set_Resize_Mode

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(Inherited)
Gtk.Container.Unset_Focus_Chain

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(Inherited)
Gtk.Widget.Activate

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(Inherited)
Gtk.Widget.Add_Accelerator

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(Inherited)
Gtk.Widget.Add_Events

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(Inherited)
Gtk.Widget.Add_Mnemonic_Label

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(Inherited)
Gtk.Widget.Can_Activate_Accel

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(Inherited)
Gtk.Widget.Child_Notify

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(Inherited)
Gtk.Widget.Class_Path

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(Inherited)
Gtk.Widget.Class_Path_Reversed

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(Inherited)
Gtk.Widget.Create_Pango_Context

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(Inherited)
Gtk.Widget.Create_Pango_Layout

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(Inherited)
Gtk.Widget.Destroy

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(Inherited)
Gtk.Widget.Draw

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(Inherited)
Gtk.Widget.Ensure_Style

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(Inherited)
Gtk.Widget.Error_Bell

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(Inherited)
Gtk.Widget.Flag_Is_Set

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(Inherited)
Gtk.Widget.Flags

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(Inherited)
Gtk.Widget.Freeze_Child_Notify

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(Inherited)
Gtk.Widget.Get_Allocation_Height

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(Inherited)
Gtk.Widget.Get_Allocation_Width

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(Inherited)
Gtk.Widget.Get_Allocation_X

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(Inherited)
Gtk.Widget.Get_Allocation_Y

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(Inherited)
Gtk.Widget.Get_Ancestor

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(Inherited)
Gtk.Widget.Get_Child_Requisition

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(Inherited)
Gtk.Widget.Get_Child_Visible

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(Inherited)
Gtk.Widget.Get_Colormap

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(Inherited)
Gtk.Widget.Get_Composite_Name

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(Inherited)
Gtk.Widget.Get_Direction

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(Inherited)
Gtk.Widget.Get_Events

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(Inherited)
Gtk.Widget.Get_Extension_Events

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(Inherited)
Gtk.Widget.Get_Has_Tooltip

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(Inherited)
Gtk.Widget.Get_Name

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(Inherited)
Gtk.Widget.Get_No_Show_All

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(Inherited)
Gtk.Widget.Get_Pango_Context

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(Inherited)
Gtk.Widget.Get_Parent

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(Inherited)
Gtk.Widget.Get_Parent_Window

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(Inherited)
Gtk.Widget.Get_Pointer

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(Inherited)
Gtk.Widget.Get_Root_Window

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(Inherited)
Gtk.Widget.Get_Size_Request

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(Inherited)
Gtk.Widget.Get_Snapshot

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(Inherited)
Gtk.Widget.Get_State

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(Inherited)
Gtk.Widget.Get_Style

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(Inherited)
Gtk.Widget.Get_Tooltip_Markup

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(Inherited)
Gtk.Widget.Get_Tooltip_Text

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(Inherited)
Gtk.Widget.Get_Tooltip_Window

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(Inherited)
Gtk.Widget.Get_Toplevel

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(Inherited)
Gtk.Widget.Get_Visual

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(Inherited)
Gtk.Widget.Get_Window

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(Inherited)
Gtk.Widget.Grab_Default

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(Inherited)
Gtk.Widget.Grab_Focus

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(Inherited)
Gtk.Widget.Has_Screen

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(Inherited)
Gtk.Widget.Hide

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(Inherited)
Gtk.Widget.Hide_All

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(Inherited)
Gtk.Widget.Input_Shape_Combine_Mask

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(Inherited)
Gtk.Widget.Intersect

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(Inherited)
Gtk.Widget.Is_Ancestor

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(Inherited)
Gtk.Widget.Is_Composited

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(Inherited)
Gtk.Widget.Is_Focus

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(Inherited)
Gtk.Widget.Keynav_Failed

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(Inherited)
Gtk.Widget.List_Mnemonic_Labels

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(Inherited)
Gtk.Widget.Map

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(Inherited)
Gtk.Widget.Mnemonic_Activate

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(Inherited)
Gtk.Widget.Modify_Base

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(Inherited)
Gtk.Widget.Modify_Bg

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(Inherited)
Gtk.Widget.Modify_Cursor

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(Inherited)
Gtk.Widget.Modify_Fg

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(Inherited)
Gtk.Widget.Modify_Font

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(Inherited)
Gtk.Widget.Modify_Text

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(Inherited)
Gtk.Widget.Path

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(Inherited)
Gtk.Widget.Path_Reversed

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(Inherited)
Gtk.Widget.Queue_Clear

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(Inherited)
Gtk.Widget.Queue_Clear_Area

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(Inherited)
Gtk.Widget.Queue_Draw

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(Inherited)
Gtk.Widget.Queue_Draw_Area

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(Inherited)
Gtk.Widget.Queue_Resize

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(Inherited)
Gtk.Widget.Queue_Resize_No_Redraw

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(Inherited)
Gtk.Widget.Realize

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(Inherited)
Gtk.Widget.Region_Intersect

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(Inherited)
Gtk.Widget.Remove_Accelerator

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(Inherited)
Gtk.Widget.Remove_Mnemonic_Label

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(Inherited)
Gtk.Widget.Render_Icon

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(Inherited)
Gtk.Widget.Reparent

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(Inherited)
Gtk.Widget.Reset_Rc_Styles

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(Inherited)
Gtk.Widget.Reset_Shapes

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(Inherited)
Gtk.Widget.Restore_Default_Style

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(Inherited)
Gtk.Widget.Send_Expose

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(Inherited)
Gtk.Widget.Set_Accel_Path

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(Inherited)
Gtk.Widget.Set_App_Paintable

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(Inherited)
Gtk.Widget.Set_Child_Visible

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(Inherited)
Gtk.Widget.Set_Colormap

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(Inherited)
Gtk.Widget.Set_Composite_Name

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(Inherited)
Gtk.Widget.Set_Direction

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(Inherited)
Gtk.Widget.Set_Double_Buffered

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(Inherited)
Gtk.Widget.Set_Events

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(Inherited)
Gtk.Widget.Set_Extension_Events

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(Inherited)
Gtk.Widget.Set_Flags

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(Inherited)
Gtk.Widget.Set_Has_Tooltip

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(Inherited)
Gtk.Widget.Set_Name

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(Inherited)
Gtk.Widget.Set_No_Show_All

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(Inherited)
Gtk.Widget.Set_Parent

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(Inherited)
Gtk.Widget.Set_Parent_Window

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(Inherited)
Gtk.Widget.Set_Redraw_On_Allocate

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(Inherited)
Gtk.Widget.Set_Scroll_Adjustments

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(Inherited)
Gtk.Widget.Set_Sensitive

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(Inherited)
Gtk.Widget.Set_Size_Request

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(Inherited)
Gtk.Widget.Set_State

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(Inherited)
Gtk.Widget.Set_Style

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(Inherited)
Gtk.Widget.Set_Tooltip_Markup

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(Inherited)
Gtk.Widget.Set_Tooltip_Text

- To API doc
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(Inherited)
Gtk.Widget.Set_Tooltip_Window

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(Inherited)
Gtk.Widget.Set_UPosition

- To API doc
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(Inherited)
Gtk.Widget.Set_USize

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(Inherited)
Gtk.Widget.Set_Window

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(Inherited)
Gtk.Widget.Shape_Combine_Mask

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(Inherited)
Gtk.Widget.Show

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(Inherited)
Gtk.Widget.Show_All

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(Inherited)
Gtk.Widget.Show_Now

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(Inherited)
Gtk.Widget.Size_Allocate

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(Inherited)
Gtk.Widget.Size_Request

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(Inherited)
Gtk.Widget.Style_Get_Property

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(Inherited)
Gtk.Widget.Thaw_Child_Notify

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(Inherited)
Gtk.Widget.Trigger_Tooltip_Query

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(Inherited)
Gtk.Widget.Unmap

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(Inherited)
Gtk.Widget.Unrealize

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(Inherited)
Gtk.Widget.Unset_Flags

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(Inherited)
Set_Expanded

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Set_Label

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Set_Label_Fill

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Set_Label_Widget

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Set_Spacing

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Set_Use_Markup

- To API doc
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Set_Use_Underline

- To API doc
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# Types

### Gtk_Expander

- Goto declaration in source

    type Gtk_Expander is access all Gtk_Expander_Record'Class;

# Constants & Global variables

### Expanded_Property

- Goto declaration in source

(Glib.Properties.Property_Boolean)

    Expanded_Property : constant Glib.Properties.Property_Boolean;

### Label_Property

- Goto declaration in source

(Glib.Properties.Property_String)

    Label_Property : constant Glib.Properties.Property_String;

### Label_Fill_Property

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(Glib.Properties.Property_Boolean)

    Label_Fill_Property : constant Glib.Properties.Property_Boolean;

### Label_Widget_Property

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(Glib.Properties.Property_Object)

    Label_Widget_Property : constant Glib.Properties.Property_Object;

### Spacing_Property

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(Glib.Properties.Property_Int)

    Spacing_Property : constant Glib.Properties.Property_Int;

### Use_Markup_Property

- Goto declaration in source

(Glib.Properties.Property_Boolean)

    Use_Markup_Property : constant Glib.Properties.Property_Boolean;

### Use_Underline_Property

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(Glib.Properties.Property_Boolean)

    Use_Underline_Property : constant Glib.Properties.Property_Boolean;

### Signal_Activate

- Goto declaration in source

(Glib.Signal_Name)

    Signal_Activate : constant Glib.Signal_Name := "activate";

# Subprograms & Entries

### Gtk_New

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    procedure Gtk_New (Expander: out Gtk_Expander;Label: UTF8_String);

### Initialize

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    procedure Initialize (Expander: access Gtk_Expander_Record'Class;Label: UTF8_String);

Creates a new expander using Label as the text of the label. Since: gtk+ 2.4 "label": the text of the label

### Gtk_New_With_Mnemonic

- Goto spec in source

    procedure Gtk_New_With_Mnemonic (Expander: out Gtk_Expander;Label: UTF8_String);

### Initialize_With_Mnemonic

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    procedure Initialize_With_Mnemonic (Expander: access Gtk_Expander_Record'Class;Label: UTF8_String);

Creates a new expander using Label as the text of the label. If characters in Label are preceded by an underscore, they are underlined. If you need a literal underscore character in a label, use '__' (two underscores). The first underlined character represents a keyboard accelerator called a mnemonic. Pressing Alt and that key activates the button. Since: gtk+ 2.4 "label": the text of the label with an underscore in front of the mnemonic character

### Get_Type

- Goto spec in source
- Goto body in source

    function Get_Type return Glib.GType;

### Get_Expanded

- Goto spec in source

    function Get_Expanded (Expander: access Gtk_Expander_Record) return Boolean;

### Set_Expanded

- Goto spec in source

    procedure Set_Expanded (Expander: access Gtk_Expander_Record;Expanded: Boolean);

Sets the state of the expander. Set to True, if you want the child widget to be revealed, and False if you want the child widget to be hidden. Since: gtk+ 2.4 "expanded": whether the child widget is revealed

### Get_Label

- Goto spec in source

    function Get_Label (Expander: access Gtk_Expander_Record) return UTF8_String;

### Set_Label

- Goto spec in source

    procedure Set_Label (Expander: access Gtk_Expander_Record;Label: UTF8_String);

Sets the text of the label of the expander to Label. This will also clear any previously set labels. Since: gtk+ 2.4 "label": a string

### Get_Label_Fill

- Goto spec in source

    function Get_Label_Fill (Expander: access Gtk_Expander_Record) return Boolean;

### Set_Label_Fill

- Goto spec in source

    procedure Set_Label_Fill (Expander: access Gtk_Expander_Record;Label_Fill: Boolean);

Sets whether the label widget should fill all available horizontal space allocated to Expander. Since: gtk+ 2.22 "label_fill": True if the label should should fill all available horizontal space

### Get_Label_Widget

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    function Get_Label_Widget (Expander: access Gtk_Expander_Record) return Gtk.Widget.Gtk_Widget;

### Set_Label_Widget

- Goto spec in source

    procedure Set_Label_Widget (Expander: access Gtk_Expander_Record;Label_Widget: access Gtk.Widget.Gtk_Widget_Record'Class);

Set the label widget for the expander. This is the widget that will appear embedded alongside the expander arrow. Since: gtk+ 2.4 "label_widget": the new label widget

### Get_Spacing

- Goto spec in source

    function Get_Spacing (Expander: access Gtk_Expander_Record) return Gint;

### Set_Spacing

- Goto spec in source

    procedure Set_Spacing (Expander: access Gtk_Expander_Record;Spacing: Gint);

Sets the spacing field of Expander, which is the number of pixels to place between expander and the child. Since: gtk+ 2.4 "spacing": distance between the expander and child in pixels.

### Get_Use_Markup

- Goto spec in source

    function Get_Use_Markup (Expander: access Gtk_Expander_Record) return Boolean;

### Set_Use_Markup

- Goto spec in source

    procedure Set_Use_Markup (Expander: access Gtk_Expander_Record;Use_Markup: Boolean);

Sets whether the text of the label contains markup in <link linkend="PangoMarkupFormat">Pango's text markup language</link>. See Gtk.Label.Set_Markup. Since: gtk+ 2.4 "use_markup": True if the label's text should be parsed for markup

### Get_Use_Underline

- Goto spec in source

    function Get_Use_Underline (Expander: access Gtk_Expander_Record) return Boolean;

### Set_Use_Underline

- Goto spec in source

    procedure Set_Use_Underline (Expander: access Gtk_Expander_Record;Use_Underline: Boolean);

If true, an underline in the text of the expander label indicates the next character should be used for the mnemonic accelerator key. Since: gtk+ 2.4 "use_underline": True if underlines in the text indicate mnemonics

### +

- Goto spec in source

    function "+" (Widget: access Gtk_Expander_Record'Class) return Gtk.Buildable.Gtk_Buildable renames Implements_Buildable.To_Interface;

### -

- Goto spec in source

    function "-" (Interf: Gtk.Buildable.Gtk_Buildable) return Gtk_Expander renames Implements_Buildable.To_Object;