### Class

# Adw Application

since: 1

#### Description [src]

    class Adw.Application : Gtk.Application
      implements Gio.ActionGroup, Gio.ActionMap {
      /* No available fields */
    }

A base class for Adwaita applications.

`AdwApplication` handles library initialization by calling `adw_init()` in the default `GApplication::startup` signal handler, in turn chaining up as required by `GtkApplication`. Therefore, any subclass of `AdwApplication` should always chain up its `startup` handler before using any Adwaita or GTK API.

## Automatic Resources

`AdwApplication` will automatically load stylesheets located in the application’s resource base path (see `g_application_set_resource_base_path()`, if they’re present.

They can be used to add custom styles to the application, as follows:

- `style.css` contains styles that are always present.

- `style-dark.css` contains styles only used when `AdwStyleManager:dark` is `TRUE`.

- `style-hc.css` contains styles used when the system high contrast preference is enabled.

- `style-hc-dark.css` contains styles used when the system high contrast preference is enabled and `AdwStyleManager:dark` is `TRUE`.

Available since: 1

#### Hierarchy

#### Ancestors

- GtkApplication
- GApplication
- GObject

#### Implements

- GActionGroup
- GActionMap

#### Constructors

###### adw_application_new

Creates a new `AdwApplication`.

since: 1

#### Instance methods

###### adw_application_get_style_manager

Gets the style manager for `self`.

since: 1

##### Methods inherited from GtkApplication (14)

###### gtk_application_add_window

Adds a window to `application`.

unstable since: 4.0

###### gtk_application_get_accels_for_action

Gets the accelerators that are currently associated with the given action.

unstable since: 4.0

###### gtk_application_get_actions_for_accel

Returns the list of actions (possibly empty) that `accel` maps to.

unstable since: 4.0

###### gtk_application_get_active_window

Gets the “active” window for the application.

unstable since: 4.0

###### gtk_application_get_menu_by_id

Gets a menu from automatically loaded resources.

unstable since: 4.0

###### gtk_application_get_menubar

Returns the menu model that has been set with `gtk_application_set_menubar()`.

unstable since: 4.0

###### gtk_application_get_window_by_id

Returns the `GtkApplicationWindow` with the given ID.

unstable since: 4.0

###### gtk_application_get_windows

Gets a list of the `GtkWindow` instances associated with `application`.

unstable since: 4.0

###### gtk_application_inhibit

Inform the session manager that certain types of actions should be inhibited.

unstable since: 4.0

###### gtk_application_list_action_descriptions

Lists the detailed action names which have associated accelerators.

unstable since: 4.0

###### gtk_application_remove_window

Remove a window from `application`.

unstable since: 4.0

###### gtk_application_set_accels_for_action

Sets zero or more keyboard accelerators that will trigger the given action.

unstable since: 4.0

###### gtk_application_set_menubar

Sets or unsets the menubar for windows of `application`.

unstable since: 4.0

###### gtk_application_uninhibit

Removes an inhibitor that has been previously established.

unstable since: 4.0

##### Methods inherited from GApplication (34)

Please see GApplication for a full list of methods.

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

Please see GObject for a full list of methods.

##### Methods inherited from GActionGroup (14)

###### g_action_group_action_added

Emits the `GActionGroup::action-added` signal on `action_group`.

unstable since: 2.28

###### g_action_group_action_enabled_changed

Emits the `GActionGroup::action-enabled-changed` signal on `action_group`.

unstable since: 2.28

###### g_action_group_action_removed

Emits the `GActionGroup::action-removed` signal on `action_group`.

unstable since: 2.28

###### g_action_group_action_state_changed

Emits the `GActionGroup::action-state-changed` signal on `action_group`.

unstable since: 2.28

###### g_action_group_activate_action

Activate the named action within `action_group`.

unstable since: 2.28

###### g_action_group_change_action_state

Request for the state of the named action within `action_group` to be changed to `value`.

unstable since: 2.28

###### g_action_group_get_action_enabled

Checks if the named action within `action_group` is currently enabled.

unstable since: 2.28

###### g_action_group_get_action_parameter_type

Queries the type of the parameter that must be given when activating the named action within `action_group`.

unstable since: 2.28

###### g_action_group_get_action_state

Queries the current state of the named action within `action_group`.

unstable since: 2.28

###### g_action_group_get_action_state_hint

Requests a hint about the valid range of values for the state of the named action within `action_group`.

unstable since: 2.28

###### g_action_group_get_action_state_type

Queries the type of the state of the named action within `action_group`.

unstable since: 2.28

###### g_action_group_has_action

Checks if the named action exists within `action_group`.

unstable since: 2.28

###### g_action_group_list_actions

Lists the actions contained within `action_group`.

unstable since: 2.28

###### g_action_group_query_action

Queries all aspects of the named action within an `action_group`.

unstable since: 2.32

##### Methods inherited from GActionMap (5)

###### g_action_map_add_action

Adds an action to the `action_map`.

unstable since: 2.32

###### g_action_map_add_action_entries

A convenience function for creating multiple `GSimpleAction` instances and adding them to a `GActionMap`.

unstable since: 2.32

###### g_action_map_lookup_action

Looks up the action with the name `action_name` in `action_map`.

unstable since: 2.32

###### g_action_map_remove_action

Removes the named action from the action map.

unstable since: 2.32

###### g_action_map_remove_action_entries

Remove actions from a `GActionMap`. This is meant as the reverse of g_action_map_add_action_entries().

unstable since: 2.78

#### Properties

###### Adw.Application:style-manager

The style manager for this application.

since: 1

##### Properties inherited from GtkApplication (4)

###### Gtk.Application:active-window

The currently focused window of the application.

unstable since: 4.0

###### Gtk.Application:menubar

The `GMenuModel` to be used for the application’s menu bar.

unstable since: 4.0

###### Gtk.Application:register-session

Set this property to `TRUE` to register with the session manager.

unstable since: 4.0

###### Gtk.Application:screensaver-active

This property is `TRUE` if GTK believes that the screensaver is currently active.

unstable since: 4.0

##### Properties inherited from GApplication (8)

###### Gio.Application:action-group

No description available.

unstable since: 2.0

###### Gio.Application:application-id

No description available.

unstable since: 2.0

###### Gio.Application:flags

No description available.

unstable since: 2.0

###### Gio.Application:inactivity-timeout

No description available.

unstable since: 2.0

###### Gio.Application:is-busy

Whether the application is currently marked as busy through `g_application_mark_busy()` or g_application_bind_busy_property().

unstable since: 2.44

###### Gio.Application:is-registered

No description available.

unstable since: 2.0

###### Gio.Application:is-remote

No description available.

unstable since: 2.0

###### Gio.Application:resource-base-path

No description available.

unstable since: 2.0

#### Signals

##### Signals inherited from GtkApplication (3)

###### GtkApplication::query-end

Emitted when the session manager is about to end the session.

unstable since: 4.0

###### GtkApplication::window-added

Emitted when a `GtkWindow` is added to `application` through `gtk_application_add_window()`.

unstable since: 4.0

###### GtkApplication::window-removed

Emitted when a `GtkWindow` is removed from `application`.

unstable since: 4.0

##### Signals inherited from GApplication (7)

###### GApplication::activate

The ::activate signal is emitted on the primary instance when an activation occurs. See g_application_activate().

unstable since: 2.0

###### GApplication::command-line

The ::command-line signal is emitted on the primary instance when a commandline is not handled locally. See `g_application_run()` and the `GApplicationCommandLine` documentation for more information.

unstable since: 2.0

###### GApplication::handle-local-options

The ::handle-local-options signal is emitted on the local instance after the parsing of the commandline options has occurred.

unstable since: 2.40

###### GApplication::name-lost

The ::name-lost signal is emitted only on the registered primary instance when a new instance has taken over. This can only happen if the application is using the `G_APPLICATION_ALLOW_REPLACEMENT` flag.

unstable since: 2.60

###### GApplication::open

The ::open signal is emitted on the primary instance when there are files to open. See `g_application_open()` for more information.

unstable since: 2.0

###### GApplication::shutdown

The ::shutdown signal is emitted only on the registered primary instance immediately after the main loop terminates.

unstable since: 2.0

###### GApplication::startup

The ::startup signal is emitted on the primary instance immediately after registration. See g_application_register().

unstable since: 2.0

##### 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.

unstable since: 2.0

##### Signals inherited from GActionGroup (4)

###### GActionGroup::action-added

Signals that a new action was just added to the group. This signal is emitted after the action has been added and is now visible.

unstable since: 2.28

###### GActionGroup::action-enabled-changed

Signals that the enabled status of the named action has changed.

unstable since: 2.28

###### GActionGroup::action-removed

Signals that an action is just about to be removed from the group. This signal is emitted before the action is removed, so the action is still visible and can be queried from the signal handler.

unstable since: 2.28

###### GActionGroup::action-state-changed

Signals that the state of the named action has changed.

unstable since: 2.28

#### Class structure

    struct AdwApplicationClass {
      GtkApplicationClass parent_class;

    }

No description available.

###### Class members

`parent_class: GtkApplicationClass`

  The parent class.