### Class

# Gtk Switch

since: 4.0

#### Description [src]

    final class Gtk.Switch : Gtk.Widget
      implements Gtk.Accessible, Gtk.Actionable, Gtk.Buildable, Gtk.ConstraintTarget {
      /* No available fields */
    }

`GtkSwitch` is a “light switch” that has two states: on or off.

The user can control which state should be active by clicking the empty area, or by dragging the slider.

`GtkSwitch` can also express situations where the underlying state changes with a delay. In this case, the slider position indicates the user’s recent change (represented by the `GtkSwitch:active` property), while the trough color indicates the present underlying state (represented by the `GtkSwitch:state` property).

See `GtkSwitch::state-set` for details.

# CSS nodes

    switch
    ├── image
    ├── image
    ╰── slider

`GtkSwitch` has four css nodes, the main node with the name switch and subnodes for the slider and the on and off images. Neither of them is using any style classes.

# Accessibility

`GtkSwitch` uses the `GTK_ACCESSIBLE_ROLE_SWITCH` role.

Available since: 4.0

#### Ancestors

- GtkWidget
- GInitiallyUnowned
- GObject

#### Implements

- GtkAccessible
- GtkActionable
- GtkBuildable
- GtkConstraintTarget

#### Constructors

###### gtk_switch_new

Creates a new `GtkSwitch` widget.

since: 4.0

#### Instance methods

###### gtk_switch_get_active

Gets whether the `GtkSwitch` is in its “on” or “off” state.

since: 4.0

###### gtk_switch_get_state

Gets the underlying state of the `GtkSwitch`.

since: 4.0

###### gtk_switch_set_active

Changes the state of `self` to the desired one.

since: 4.0

###### gtk_switch_set_state

Sets the underlying state of the `GtkSwitch`.

since: 4.0

##### 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.

since: 4.0

###### 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.

since: 4.0

###### gtk_accessible_reset_relation

Resets the accessible `relation` to its default value.

since: 4.0

###### gtk_accessible_reset_state

Resets the accessible `state` to its default value.

since: 4.0

###### 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.

since: 4.0

###### gtk_accessible_update_property_value

Updates an array of accessible properties.

since: 4.0

###### gtk_accessible_update_relation

Updates a list of accessible relations.

since: 4.0

###### gtk_accessible_update_relation_value

Updates an array of accessible relations.

since: 4.0

###### gtk_accessible_update_state

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

since: 4.0

###### gtk_accessible_update_state_value

Updates an array of accessible states.

since: 4.0

##### Methods inherited from GtkActionable (6)

###### gtk_actionable_get_action_name

Gets the action name for `actionable`.

since: 4.0

###### gtk_actionable_get_action_target_value

Gets the current target value of `actionable`.

since: 4.0

###### gtk_actionable_set_action_name

Specifies the name of the action with which this widget should be associated.

since: 4.0

###### gtk_actionable_set_action_target

Sets the target of an actionable widget.

since: 4.0

###### gtk_actionable_set_action_target_value

Sets the target value of an actionable widget.

since: 4.0

###### gtk_actionable_set_detailed_action_name

Sets the action-name and associated string target value of an actionable widget.

since: 4.0

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

###### gtk_buildable_get_buildable_id

Gets the ID of the `buildable` object.

since: 4.0

#### Properties

###### Gtk.Switch:active

Whether the `GtkSwitch` widget is in its on or off state.

since: 4.0

###### Gtk.Switch:state

The backend state that is controlled by the switch.

since: 4.0

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

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

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

since: 4.0

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

Whether the widget can receive pointer events.

since: 4.0

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

A list of css classes applied to this widget.

since: 4.0

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

The name of this widget in the CSS tree.

since: 4.0

###### Gtk.Widget:cursor

The cursor used by `widget`.

since: 4.0

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

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

since: 4.0

###### Gtk.Widget:focusable

Whether this widget itself will accept the input focus.

since: 4.0

###### Gtk.Widget:halign

How to distribute horizontal space if widget gets extra space.

since: 4.0

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

Whether the widget is the default widget.

since: 4.0

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

Whether the widget has the input focus.

since: 4.0

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

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

since: 4.0

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

Override for height request of the widget.

since: 4.0

###### Gtk.Widget:hexpand

Whether to expand horizontally.

since: 4.0

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

Whether to use the `hexpand` property.

since: 4.0

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

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

since: 4.0

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

Margin on bottom side of widget.

since: 4.0

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

Margin on end of widget, horizontally.

since: 4.0

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

Margin on start of widget, horizontally.

since: 4.0

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

Margin on top side of widget.

since: 4.0

###### Gtk.Widget:name

The name of the widget.

since: 4.0

###### Gtk.Widget:opacity

The requested opacity of the widget.

since: 4.0

###### Gtk.Widget:overflow

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

since: 4.0

###### Gtk.Widget:parent

The parent widget of this widget.

since: 4.0

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

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

since: 4.0

###### Gtk.Widget:root

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

since: 4.0

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

The scale factor of the widget.

since: 4.0

###### Gtk.Widget:sensitive

Whether the widget responds to input.

since: 4.0

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

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

since: 4.0

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

Sets the text of tooltip to be the given string.

since: 4.0

###### Gtk.Widget:valign

How to distribute vertical space if widget gets extra space.

since: 4.0

###### Gtk.Widget:vexpand

Whether to expand vertically.

since: 4.0

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

Whether to use the `vexpand` property.

since: 4.0

###### Gtk.Widget:visible

Whether the widget is visible.

since: 4.0

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

Override for width request of the widget.

since: 4.0

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

###### GtkAccessible:accessible-role

The accessible role of the given `GtkAccessible` implementation.

since: 4.0

##### Properties inherited from GtkActionable (2)

###### GtkActionable:action-name

No description available.

since: 4.0

###### GtkActionable:action-target

No description available.

since: 4.0

#### Signals

###### Gtk.Switch::activate

Emitted to animate the switch.

since: 4.0

###### Gtk.Switch::state-set

Emitted to change the underlying state.

since: 4.0

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

###### GtkWidget::destroy

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

since: 4.0

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

Emitted when the text direction of a widget changes.

since: 4.0

###### GtkWidget::hide

Emitted when `widget` is hidden.

since: 4.0

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

Emitted if keyboard navigation fails.

since: 4.0

###### GtkWidget::map

Emitted when `widget` is going to be mapped.

since: 4.0

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

Emitted when a widget is activated via a mnemonic.

since: 4.0

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

Emitted when the focus is moved.

since: 4.0

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

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

since: 4.0

###### GtkWidget::realize

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

since: 4.0

###### GtkWidget::show

Emitted when `widget` is shown.

since: 4.0

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

Emitted when the widget state changes.

since: 4.0

###### GtkWidget::unmap

Emitted when `widget` is going to be unmapped.

since: 4.0

###### GtkWidget::unrealize

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

since: 4.0

##### 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.

since: 2.0