## Documentation

Table of Contents
Class Inheritance Tree
Widget Screenshots
Package groups

## Index

Package: Size_Group

- Goto spec source

# Description

    package Gtk.Size_Group is

Gtk_Size_Group provides a mechanism for grouping a number of widgets together so they all request the same amount of space. This is typically useful when you want a column of widgets to have the same size, but you can't use a Gtk_Table widget.

Note that size groups only affect the amount of space requested, not the size that the widgets finally receive. If you want the widgets in a Gtk_Size_Group to actually be the same size, you need to pack them in such a way that they get the size they request and not more. For example, if you are packing your widgets into a table, you would not include the Fill flag.

<testgtk>create_size_groups.adb</testgtk>

# Packages

### Size_Group_Mode_Properties (new Glib.Generic_Properties.Generic_Internal_Discrete_Property)

    package Size_Group_Mode_Properties is new
       Glib.Generic_Properties.Generic_Internal_Discrete_Property
         (Size_Group_Mode);

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

    package Implements_Buildable is new Glib.Types.Implements
         (Gtk.Buildable.Gtk_Buildable, Gtk_Size_Group_Record, Gtk_Size_Group);

# Classes

### Gtk_Size_Group_Record

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    type Gtk_Size_Group_Record is new GObject_Record with null record;

#### Ancestors:

Glib.Object.GObject_Record

#### Primitive operations:

Add_Widget

- To API doc
- To spec

Get_Ignore_Hidden

- To API doc
- To spec

Get_Mode

- To API doc
- To spec

Get_Widgets

- To API doc
- To spec

Glib.Object.Deallocate

- To API doc
- To spec

(Inherited)
Glib.Object.Get_Type

- To API doc
- To spec

(Inherited)
Glib.Object.Notify

- To API doc
- To spec

(Inherited)
Glib.Object.Ref

- To API doc
- To spec

(Inherited)
Glib.Object.Ref_Sink

- To API doc
- To spec

(Inherited)
Glib.Object.Unref

- To API doc
- To spec

(Inherited)
Remove_Widget

- To API doc
- To spec

Set_Ignore_Hidden

- To API doc
- To spec

Set_Mode

- To API doc
- To spec

# Types

### Gtk_Size_Group

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    type Gtk_Size_Group is access all Gtk_Size_Group_Record'Class;

### Size_Group_Mode

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    type Size_Group_Mode is (None, Horizontal, Vertical, Both);

### Property_Size_Group_Mode

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    type Property_Size_Group_Mode is new Size_Group_Mode_Properties.Property;

# Constants & Global variables

### Ignore_Hidden_Property

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(Glib.Properties.Property_Boolean)

    Ignore_Hidden_Property : constant Glib.Properties.Property_Boolean;

### Mode_Property

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(Property_Size_Group_Mode)

    Mode_Property : constant Gtk.Size_Group.Property_Size_Group_Mode;

# Subprograms & Entries

### Gtk_New

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    procedure Gtk_New (Size_Group: out Gtk_Size_Group;Mode: Size_Group_Mode := Both);

### Initialize

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    procedure Initialize (Size_Group: access Gtk_Size_Group_Record'Class;Mode: Size_Group_Mode := Both);

Create a new Gtk.Size_Group.Gtk_Size_Group. "mode": the mode for the new size group.

### Get_Type

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- Goto body in source

    function Get_Type return Glib.GType;

### Add_Widget

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    procedure Add_Widget (Size_Group: access Gtk_Size_Group_Record;Widget: access Gtk.Widget.Gtk_Widget_Record'Class);

Adds a widget to a Gtk.Size_Group.Gtk_Size_Group. In the future, the requisition of the widget will be determined as the maximum of its requisition and the requisition of the other widgets in the size group. Whether this applies horizontally, vertically, or in both directions depends on the mode of the size group. See Gtk.Size_Group.Set_Mode. When the widget is destroyed or no longer referenced elsewhere, it will be removed from the size group. "widget": the Gtk.Widget.Gtk_Widget to add

### Get_Ignore_Hidden

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    function Get_Ignore_Hidden (Size_Group: access Gtk_Size_Group_Record) return Boolean;

### Set_Ignore_Hidden

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    procedure Set_Ignore_Hidden (Size_Group: access Gtk_Size_Group_Record;Ignore_Hidden: Boolean);

Sets whether unmapped widgets should be ignored when calculating the size. Since: gtk+ 2.8 "ignore_hidden": whether unmapped widgets should be ignored when calculating the size

### Get_Mode

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    function Get_Mode (Size_Group: access Gtk_Size_Group_Record) return Size_Group_Mode;

### Set_Mode

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    procedure Set_Mode (Size_Group: access Gtk_Size_Group_Record;Mode: Size_Group_Mode);

Sets the Size_Group_Mode of the size group. The mode of the size group determines whether the widgets in the size group should all have the same horizontal requisition (%GTK_SIZE_GROUP_MODE_HORIZONTAL) all have the same vertical requisition (%GTK_SIZE_GROUP_MODE_VERTICAL), or should all have the same requisition in both directions (%GTK_SIZE_GROUP_MODE_BOTH). "mode": the mode to set for the size group.

### Get_Widgets

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    function Get_Widgets (Size_Group: access Gtk_Size_Group_Record) return Gtk.Widget.Widget_SList.GSlist;

Returns the list of widgets associated with Size_Group. widgets. The list is owned by GTK+ and should not be modified. Since: gtk+ 2.10

### Remove_Widget

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    procedure Remove_Widget (Size_Group: access Gtk_Size_Group_Record;Widget: access Gtk.Widget.Gtk_Widget_Record'Class);

Removes a widget from a Gtk.Size_Group.Gtk_Size_Group. "widget": the Gtk.Widget.Gtk_Widget to remove

### +

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

### -

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