### Class

# GtkRange

#### Description [src]

    class Gtk.Range : Gtk.Widget
      implements Gtk.Accessible, Gtk.AccessibleRange, Gtk.Buildable, Gtk.ConstraintTarget, Gtk.Orientable {
      /* No available fields */
    }

`GtkRange` is the common base class for widgets which visualize an adjustment.

Widgets that are derived from `GtkRange` include `GtkScale` and `GtkScrollbar`.

Apart from signals for monitoring the parameters of the adjustment, `GtkRange` provides properties and methods for setting a “fill level” on range widgets. See `gtk_range_set_fill_level()`.

#### Hierarchy

#### Ancestors

- GtkWidget
- GInitiallyUnowned
- GObject

#### Descendants

- GtkScale

#### Implements

- GtkAccessible
- GtkAccessibleRange
- GtkBuildable
- GtkConstraintTarget
- GtkOrientable

#### Instance methods

###### gtk_range_get_adjustment

Get the adjustment which is the “model” object for `GtkRange`.

###### gtk_range_get_fill_level

Gets the current position of the fill level indicator.

###### gtk_range_get_flippable

Gets whether the `GtkRange` respects text direction.

###### gtk_range_get_inverted

Gets whether the range is inverted.

###### gtk_range_get_range_rect

This function returns the area that contains the range’s trough, in coordinates relative to `range`‘s origin.

###### gtk_range_get_restrict_to_fill_level

Gets whether the range is restricted to the fill level.

###### gtk_range_get_round_digits

Gets the number of digits to round the value to when it changes.

###### gtk_range_get_show_fill_level

Gets whether the range displays the fill level graphically.

###### gtk_range_get_slider_range

This function returns sliders range along the long dimension, in widget->window coordinates.

###### gtk_range_get_slider_size_fixed

This function is useful mainly for `GtkRange` subclasses.

###### gtk_range_get_value

Gets the current value of the range.

###### gtk_range_set_adjustment

Sets the adjustment to be used as the “model” object for the `GtkRange`

###### gtk_range_set_fill_level

Set the new position of the fill level indicator.

###### gtk_range_set_flippable

Sets whether the `GtkRange` respects text direction.

###### gtk_range_set_increments

Sets the step and page sizes for the range.

###### gtk_range_set_inverted

Sets whether to invert the range.

###### gtk_range_set_range

Sets the allowable values in the `GtkRange`.

###### gtk_range_set_restrict_to_fill_level

Sets whether the slider is restricted to the fill level.

###### gtk_range_set_round_digits

Sets the number of digits to round the value to when it changes.

###### gtk_range_set_show_fill_level

Sets whether a graphical fill level is show on the trough.

###### gtk_range_set_slider_size_fixed

Sets whether the range’s slider has a fixed size, or a size that depends on its adjustment’s page size.

###### gtk_range_set_value

Sets the current value of the range.

##### Methods inherited from GtkWidget (162)

Please see GtkWidget for a full list of methods.

##### Methods inherited from GObject (43)

Please see GObject for a full list of methods.

##### Methods inherited from GtkAccessible (19)

###### gtk_accessible_announce

Requests the user’s screen reader to announce the given message.

since: 4.14

###### gtk_accessible_get_accessible_parent

Retrieves the accessible parent for an accessible object.

since: 4.10

###### gtk_accessible_get_accessible_role

Retrieves the accessible role of an accessible object.

###### gtk_accessible_get_at_context

Retrieves the accessible implementation for the given `GtkAccessible`.

since: 4.10

###### gtk_accessible_get_bounds

Queries the coordinates and dimensions of this accessible.

since: 4.10

###### gtk_accessible_get_first_accessible_child

Retrieves the first accessible child of an accessible object.

since: 4.10

###### gtk_accessible_get_next_accessible_sibling

Retrieves the next accessible sibling of an accessible object.

since: 4.10

###### gtk_accessible_get_platform_state

Query a platform state, such as focus.

since: 4.10

###### gtk_accessible_reset_property

Resets the accessible `property` to its default value.

###### gtk_accessible_reset_relation

Resets the accessible `relation` to its default value.

###### gtk_accessible_reset_state

Resets the accessible `state` to its default value.

###### gtk_accessible_set_accessible_parent

Sets the parent and sibling of an accessible object.

since: 4.10

###### gtk_accessible_update_next_accessible_sibling

Updates the next accessible sibling of `self`.

since: 4.10

###### gtk_accessible_update_property

Updates a list of accessible properties.

###### gtk_accessible_update_property_value

Updates an array of accessible properties.

###### gtk_accessible_update_relation

Updates a list of accessible relations.

###### gtk_accessible_update_relation_value

Updates an array of accessible relations.

###### gtk_accessible_update_state

Updates a list of accessible states. See the `GtkAccessibleState` documentation for the value types of accessible states.

###### gtk_accessible_update_state_value

Updates an array of accessible states.

##### Methods inherited from GtkBuildable (1)

###### gtk_buildable_get_buildable_id

Gets the ID of the `buildable` object.

##### Methods inherited from GtkOrientable (2)

###### gtk_orientable_get_orientation

Retrieves the orientation of the `orientable`.

###### gtk_orientable_set_orientation

Sets the orientation of the `orientable`.

#### Properties

###### Gtk.Range:adjustment

The adjustment that is controlled by the range.

###### Gtk.Range:fill-level

The fill level (e.g. prebuffering of a network stream).

###### Gtk.Range:inverted

If `TRUE`, the direction in which the slider moves is inverted.

###### Gtk.Range:restrict-to-fill-level

Controls whether slider movement is restricted to an upper boundary set by the fill level.

###### Gtk.Range:round-digits

The number of digits to round the value to when it changes.

###### Gtk.Range:show-fill-level

Controls whether fill level indicator graphics are displayed on the trough.

##### Properties inherited from GtkWidget (34)

###### Gtk.Widget:can-focus

Whether the widget or any of its descendents can accept the input focus.

###### Gtk.Widget:can-target

Whether the widget can receive pointer events.

###### Gtk.Widget:css-classes

A list of css classes applied to this widget.

###### Gtk.Widget:css-name

The name of this widget in the CSS tree.

###### Gtk.Widget:cursor

The cursor used by `widget`.

###### Gtk.Widget:focus-on-click

Whether the widget should grab focus when it is clicked with the mouse.

###### Gtk.Widget:focusable

Whether this widget itself will accept the input focus.

###### Gtk.Widget:halign

How to distribute horizontal space if widget gets extra space.

###### Gtk.Widget:has-default

Whether the widget is the default widget.

###### Gtk.Widget:has-focus

Whether the widget has the input focus.

###### Gtk.Widget:has-tooltip

Enables or disables the emission of the ::query-tooltip signal on `widget`.

###### Gtk.Widget:height-request

Override for height request of the widget.

###### Gtk.Widget:hexpand

Whether to expand horizontally.

###### Gtk.Widget:hexpand-set

Whether to use the `hexpand` property.

###### Gtk.Widget:layout-manager

The `GtkLayoutManager` instance to use to compute the preferred size of the widget, and allocate its children.

###### Gtk.Widget:margin-bottom

Margin on bottom side of widget.

###### Gtk.Widget:margin-end

Margin on end of widget, horizontally.

###### Gtk.Widget:margin-start

Margin on start of widget, horizontally.

###### Gtk.Widget:margin-top

Margin on top side of widget.

###### Gtk.Widget:name

The name of the widget.

###### Gtk.Widget:opacity

The requested opacity of the widget.

###### Gtk.Widget:overflow

How content outside the widget’s content area is treated.

###### Gtk.Widget:parent

The parent widget of this widget.

###### Gtk.Widget:receives-default

Whether the widget will receive the default action when it is focused.

###### Gtk.Widget:root

The `GtkRoot` widget of the widget tree containing this widget.

###### Gtk.Widget:scale-factor

The scale factor of the widget.

###### Gtk.Widget:sensitive

Whether the widget responds to input.

###### Gtk.Widget:tooltip-markup

Sets the text of tooltip to be the given string, which is marked up with Pango markup.

###### Gtk.Widget:tooltip-text

Sets the text of tooltip to be the given string.

###### Gtk.Widget:valign

How to distribute vertical space if widget gets extra space.

###### Gtk.Widget:vexpand

Whether to expand vertically.

###### Gtk.Widget:vexpand-set

Whether to use the `vexpand` property.

###### Gtk.Widget:visible

Whether the widget is visible.

###### Gtk.Widget:width-request

Override for width request of the widget.

##### Properties inherited from GtkAccessible (1)

###### GtkAccessible:accessible-role

The accessible role of the given `GtkAccessible` implementation.

##### Properties inherited from GtkOrientable (1)

###### GtkOrientable:orientation

The orientation of the orientable.

#### Signals

###### Gtk.Range::adjust-bounds

Emitted before clamping a value, to give the application a chance to adjust the bounds.

###### Gtk.Range::change-value

Emitted when a scroll action is performed on a range.

###### Gtk.Range::move-slider

Virtual function that moves the slider.

###### Gtk.Range::value-changed

Emitted when the range value changes.

##### Signals inherited from GtkWidget (13)

###### GtkWidget::destroy

Signals that all holders of a reference to the widget should release the reference that they hold.

###### GtkWidget::direction-changed

Emitted when the text direction of a widget changes.

###### GtkWidget::hide

Emitted when `widget` is hidden.

###### GtkWidget::keynav-failed

Emitted if keyboard navigation fails.

###### GtkWidget::map

Emitted when `widget` is going to be mapped.

###### GtkWidget::mnemonic-activate

Emitted when a widget is activated via a mnemonic.

###### GtkWidget::move-focus

Emitted when the focus is moved.

###### GtkWidget::query-tooltip

Emitted when the widget’s tooltip is about to be shown.

###### GtkWidget::realize

Emitted when `widget` is associated with a `GdkSurface`.

###### GtkWidget::show

Emitted when `widget` is shown.

###### GtkWidget::state-flags-changed

Emitted when the widget state changes.

###### GtkWidget::unmap

Emitted when `widget` is going to be unmapped.

###### GtkWidget::unrealize

Emitted when the `GdkSurface` associated with `widget` is destroyed.

##### Signals inherited from GObject (1)

###### GObject::notify

The notify signal is emitted on an object when one of its properties has its value set through g_object_set_property(), g_object_set(), et al.

#### Class structure

    struct GtkRangeClass {
      GtkWidgetClass parent_class;
      void (* value_changed) (
        GtkRange* range
      );
      void (* adjust_bounds) (
        GtkRange* range,
        double new_value
      );
      void (* move_slider) (
        GtkRange* range,
        GtkScrollType scroll
      );
      void (* get_range_border) (
        GtkRange* range,
        GtkBorder* border_
      );
      gboolean (* change_value) (
        GtkRange* range,
        GtkScrollType scroll,
        double new_value
      );

    }

No description available.

###### Class members

`parent_class: GtkWidgetClass`
  No description available.
`value_changed: void (* value_changed) ( GtkRange* range )`
  No description available.
`adjust_bounds: void (* adjust_bounds) ( GtkRange* range, double new_value )`
  No description available.
`move_slider: void (* move_slider) ( GtkRange* range, GtkScrollType scroll )`
  No description available.
`get_range_border: void (* get_range_border) ( GtkRange* range, GtkBorder* border_ )`
  No description available.
`change_value: gboolean (* change_value) ( GtkRange* range, GtkScrollType scroll, double new_value )`
  No description available.

#### Virtual methods

###### Gtk.RangeClass.adjust_bounds

No description available.

###### Gtk.RangeClass.change_value

No description available.

###### Gtk.RangeClass.get_range_border

No description available.

###### Gtk.RangeClass.move_slider

No description available.

###### Gtk.RangeClass.value_changed

No description available.