Gtk.Accessible_Range

Description

An interface for accessible objects containing a numeric value.

GtkAccessibleRange describes ranged controls for Assistive Technologies.

Ranged controls have a single value within an allowed range that can optionally be changed by the user.

This interface is expected to be implemented by controls using the following roles:

• GTK_ACCESSIBLE_ROLE_METER - GTK_ACCESSIBLE_ROLE_PROGRESS_BAR -

GTK_ACCESSIBLE_ROLE_SCROLLBAR - GTK_ACCESSIBLE_ROLE_SLIDER - GTK_ACCESSIBLE_ROLE_SPIN_BUTTON

If that is not the case, a warning will be issued at run time.

In addition to this interface, its implementers are expected to provide the correct values for the following properties:

• GTK_ACCESSIBLE_PROPERTY_VALUE_MAX -

GTK_ACCESSIBLE_PROPERTY_VALUE_MIN - GTK_ACCESSIBLE_PROPERTY_VALUE_NOW - GTK_ACCESSIBLE_PROPERTY_VALUE_TEXT

"+"

function "+" (W : Gtk_Accessible_Range) return Gtk_Accessible_Range

Parameters

W

Return Value

Accessible_Range_Interface_Descr

subtype Accessible_Range_Interface_Descr is Glib.Object.Interface_Description;

Get_Type

function Get_Type return Glib.GType

Return Value

Gtk_Accessible_Range

type Gtk_Accessible_Range is new Glib.Types.GType_Interface;

Null_Gtk_Accessible_Range

Null_Gtk_Accessible_Range : constant Gtk_Accessible_Range;

Set_Set_Current_Value

procedure Set_Set_Current_Value
  (Self    : Accessible_Range_Interface_Descr;
   Handler : Virtual_Set_Current_Value)

See Glib.Object.Add_Interface

Parameters

Self

Handler

Virtual_Set_Current_Value

type Virtual_Set_Current_Value is access function
  (Self  : Gtk_Accessible_Range;
   Value : Gdouble) return Glib.Gboolean;

Sets the current value of the accessible range. This operation should behave similarly as if the user performed the action. Since: gtk+ 4.10

Parameters

Self

Value

the value to set

Return Value

true if the operation was performed, false otherwise