Struct gtk4::Window

#[repr(transparent)]
pub struct Window { /* private fields */ }

A Window is a toplevel window which can contain other widgets.

Windows normally have decorations that are under the control of the windowing system and allow the user to manipulate the window (resize it, move it, close it,…).

GtkWindow as GtkBuildable

The Window implementation of the Buildable interface supports setting a child as the titlebar by specifying “titlebar” as the “type” attribute of a <child> element.

CSS nodes

window.background [.csd / .solid-csd / .ssd] [.maximized / .fullscreen / .tiled]
├── <child>
╰── <titlebar child>.titlebar [.default-decoration]

Window has a main CSS node with name window and style class .background.

Style classes that are typically used with the main CSS node are .csd (when client-side decorations are in use), .solid-csd (for client-side decorations without invisible borders), .ssd (used by mutter when rendering server-side decorations). GtkWindow also represents window states with the following style classes on the main node: .maximized, .fullscreen, .tiled (when supported, also .tiled-top, .tiled-left, .tiled-right, .tiled-bottom).

Window subclasses often add their own discriminating style classes, such as .dialog, .popup or .tooltip.

Generally, some CSS properties don’t make sense on the toplevel window node, such as margins or padding. When client-side decorations without invisible borders are in use (i.e. the .solid-csd style class is added to the main window node), the CSS border of the toplevel window is used for resize drags. In the .csd case, the shadow area outside of the window can be used to resize it.

Window adds the .titlebar and .default-decoration style classes to the widget that is added as a titlebar child.

Accessibility

Window uses the AccessibleRole::Window role.

Actions

Window defines a set of built-in actions:

• default.activate: Activate the default widget.
• window.minimize: Minimize the window.
• window.toggle-maximized: Maximize or restore the window.
• window.close: Close the window.

Properties

application

The Application associated with the window.

The application will be kept alive for at least as long as it has any windows associated with it (see g_application_hold() for a way to keep it alive without windows).

Normally, the connection between the application and the window will remain until the window is destroyed, but you can explicitly remove it by setting the :application property to None.

Readable | Writeable

child

The child widget.

Readable | Writeable

decorated

Whether the window should have a frame (also known as decorations).

Readable | Writeable

default-height

The default height of the window.

Readable | Writeable

default-widget

The default widget.

Readable | Writeable

default-width

The default width of the window.

Readable | Writeable

deletable

Whether the window frame should have a close button.

Readable | Writeable

destroy-with-parent

If this window should be destroyed when the parent is destroyed.

Readable | Writeable

display

The display that will display this window.

Readable | Writeable

focus-visible

Whether ‘focus rectangles’ are currently visible in this window.

This property is maintained by GTK based on user input and should not be set by applications.

Readable | Writeable

focus-widget

The focus widget.

Readable | Writeable

fullscreened

Whether the window is fullscreen.

Setting this property is the equivalent of calling GtkWindowExt::fullscreen() or GtkWindowExt::unfullscreen(); either operation is asynchronous, which means you will need to connect to the ::notify signal in order to know whether the operation was successful.

Readable | Writeable | Construct

handle-menubar-accel

Whether the window frame should handle F10 for activating menubars.

Readable | Writeable

hide-on-close

If this window should be hidden when the users clicks the close button.

Readable | Writeable

icon-name

Specifies the name of the themed icon to use as the window icon.

See IconTheme for more details.

Readable | Writeable

is-active

Whether the toplevel is the currently active window.

Readable

maximized

Whether the window is maximized.

Setting this property is the equivalent of calling GtkWindowExt::maximize() or GtkWindowExt::unmaximize(); either operation is asynchronous, which means you will need to connect to the ::notify signal in order to know whether the operation was successful.

Readable | Writeable | Construct

mnemonics-visible

Whether mnemonics are currently visible in this window.

This property is maintained by GTK based on user input, and should not be set by applications.

Readable | Writeable

modal

If true, the window is modal.

Readable | Writeable

resizable

If true, users can resize the window.

Readable | Writeable

startup-id

A write-only property for setting window’s startup notification identifier.

Writeable

title

The title of the window.

Readable | Writeable

titlebar

The titlebar widget.

Readable | Writeable

transient-for

The transient parent of the window.

Readable | Writeable | Construct

Widget

can-focus

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

This property is meant to be set by widget implementations, typically in their instance init function.

Readable | Writeable

can-target

Whether the widget can receive pointer events.

Readable | Writeable

css-classes

A list of css classes applied to this widget.

Readable | Writeable

css-name

The name of this widget in the CSS tree.

This property is meant to be set by widget implementations, typically in their instance init function.

Readable | Writeable | Construct Only

cursor

The cursor used by @widget.

Readable | Writeable

focus-on-click

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

This property is only relevant for widgets that can take focus.

Readable | Writeable

focusable

Whether this widget itself will accept the input focus.

Readable | Writeable

halign

How to distribute horizontal space if widget gets extra space.

Readable | Writeable

has-default

Whether the widget is the default widget.

Readable

has-focus

Whether the widget has the input focus.

Readable

has-tooltip

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

A value of true indicates that @widget can have a tooltip, in this case the widget will be queried using query-tooltip to determine whether it will provide a tooltip or not.

Readable | Writeable

height-request

Override for height request of the widget.

If this is -1, the natural request will be used.

Readable | Writeable

hexpand

Whether to expand horizontally.

Readable | Writeable

hexpand-set

Whether to use the hexpand property.

Readable | Writeable

layout-manager

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

This property is meant to be set by widget implementations, typically in their instance init function.

Readable | Writeable

margin-bottom

Margin on bottom side of widget.

This property adds margin outside of the widget’s normal size request, the margin will be added in addition to the size from WidgetExt::set_size_request() for example.

Readable | Writeable

margin-end

Margin on end of widget, horizontally.

This property supports left-to-right and right-to-left text directions.

This property adds margin outside of the widget’s normal size request, the margin will be added in addition to the size from WidgetExt::set_size_request() for example.

Readable | Writeable

margin-start

Margin on start of widget, horizontally.

This property supports left-to-right and right-to-left text directions.

This property adds margin outside of the widget’s normal size request, the margin will be added in addition to the size from WidgetExt::set_size_request() for example.

Readable | Writeable

margin-top

Margin on top side of widget.

This property adds margin outside of the widget’s normal size request, the margin will be added in addition to the size from WidgetExt::set_size_request() for example.

Readable | Writeable

name

The name of the widget.

Readable | Writeable

opacity

The requested opacity of the widget.

Readable | Writeable

overflow

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

This property is meant to be set by widget implementations, typically in their instance init function.

Readable | Writeable

parent

The parent widget of this widget.

Readable

receives-default

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

Readable | Writeable

root

The Root widget of the widget tree containing this widget.

This will be None if the widget is not contained in a root widget.

Readable

scale-factor

The scale factor of the widget.

Readable

sensitive

Whether the widget responds to input.

Readable | Writeable

tooltip-markup

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

Also see Tooltip::set_markup().

This is a convenience property which will take care of getting the tooltip shown if the given string is not None: has-tooltip will automatically be set to true and there will be taken care of query-tooltip in the default signal handler.

Note that if both tooltip-text and tooltip-markup are set, the last one wins.

Readable | Writeable

tooltip-text

Sets the text of tooltip to be the given string.

Also see Tooltip::set_text().

This is a convenience property which will take care of getting the tooltip shown if the given string is not None: has-tooltip will automatically be set to true and there will be taken care of query-tooltip in the default signal handler.

Note that if both tooltip-text and tooltip-markup are set, the last one wins.

Readable | Writeable

valign

How to distribute vertical space if widget gets extra space.

Readable | Writeable

vexpand

Whether to expand vertically.

Readable | Writeable

vexpand-set

Whether to use the vexpand property.

Readable | Writeable

visible

Whether the widget is visible.

Readable | Writeable

width-request

Override for width request of the widget.

If this is -1, the natural request will be used.

Readable | Writeable

Accessible

accessible-role

The accessible role of the given Accessible implementation.

The accessible role cannot be changed once set.

Readable | Writeable

Signals

activate-default

Emitted when the user activates the default widget of @window.

This is a keybinding signal.

Action

activate-focus

Emitted when the user activates the currently focused widget of @window.

This is a keybinding signal.

Action

close-request

Emitted when the user clicks on the close button of the window.

enable-debugging

Emitted when the user enables or disables interactive debugging.

When @toggle is true, interactive debugging is toggled on or off, when it is false, the debugger will be pointed at the widget under the pointer.

This is a keybinding signal.

The default bindings for this signal are Ctrl-Shift-I and Ctrl-Shift-D.

Action

keys-changed

emitted when the set of accelerators or mnemonics that are associated with @window changes.

Widget

destroy

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

May result in finalization of the widget if all references are released.

This signal is not suitable for saving widget state.

direction-changed

Emitted when the text direction of a widget changes.

hide

Emitted when @widget is hidden.

keynav-failed

Emitted if keyboard navigation fails.

See WidgetExt::keynav_failed() for details.

map

Emitted when @widget is going to be mapped.

A widget is mapped when the widget is visible (which is controlled with visible) and all its parents up to the toplevel widget are also visible.

The ::map signal can be used to determine whether a widget will be drawn, for instance it can resume an animation that was stopped during the emission of unmap.

mnemonic-activate

Emitted when a widget is activated via a mnemonic.

The default handler for this signal activates @widget if @group_cycling is false, or just makes @widget grab focus if @group_cycling is true.

move-focus

Emitted when the focus is moved.

Action

query-tooltip

Emitted when the widgets tooltip is about to be shown.

This happens when the has-tooltip property is true and the hover timeout has expired with the cursor hovering “above” @widget; or emitted when @widget got focus in keyboard mode.

Using the given coordinates, the signal handler should determine whether a tooltip should be shown for @widget. If this is the case true should be returned, false otherwise. Note that if @keyboard_mode is true, the values of @x and @y are undefined and should not be used.

The signal handler is free to manipulate @tooltip with the therefore destined function calls.

realize

Emitted when @widget is associated with a gdk::Surface.

This means that WidgetExt::realize() has been called or the widget has been mapped (that is, it is going to be drawn).

show

Emitted when @widget is shown.

state-flags-changed

Emitted when the widget state changes.

See WidgetExt::state_flags().

unmap

Emitted when @widget is going to be unmapped.

A widget is unmapped when either it or any of its parents up to the toplevel widget have been set as hidden.

As ::unmap indicates that a widget will not be shown any longer, it can be used to, for example, stop an animation on the widget.

unrealize

Emitted when the gdk::Surface associated with @widget is destroyed.

This means that WidgetExt::unrealize() has been called or the widget has been unmapped (that is, it is going to be hidden).

Implements

GtkWindowExt, WidgetExt, glib::ObjectExt, AccessibleExt, BuildableExt, ConstraintTargetExt, NativeExt, RootExt, ShortcutManagerExt, WidgetExtManual, AccessibleExtManual

Implementations

impl Window

pub const NONE: Option<&'static Window> = None

pub fn new() -> Window

Creates a new Window.

To get an undecorated window (no window borders), use GtkWindowExt::set_decorated().

All top-level windows created by gtk_window_new() are stored in an internal top-level window list. This list can be obtained from list_toplevels(). Due to GTK keeping a reference to the window internally, gtk_window_new() does not return a reference to the caller.

To delete a Window, call Gtk::Window::destroy().

Returns

a new Window.

pub fn builder() -> WindowBuilder

Creates a new builder-pattern struct instance to construct Window objects.

This method returns an instance of WindowBuilder which can be used to create Window objects.

pub fn default_icon_name() -> Option<GString>

Returns the fallback icon name for windows.

The returned string is owned by GTK and should not be modified. It is only valid until the next call to set_default_icon_name().

Returns

the fallback icon name for windows

pub fn toplevels() -> ListModel

Returns a list of all existing toplevel windows.

If you want to iterate through the list and perform actions involving callbacks that might destroy the widgets or add new ones, be aware that the list of toplevels will change and emit the “items-changed” signal.

Returns

the list of toplevel widgets

pub fn list_toplevels() -> Vec<Widget>

Returns a list of all existing toplevel windows.

The widgets in the list are not individually referenced. If you want to iterate through the list and perform actions involving callbacks that might destroy the widgets, you must call g_list_foreach (result, (GFunc)g_object_ref, NULL) first, and then unref all the widgets afterwards.

Returns

list of toplevel widgets

pub fn set_auto_startup_notification(setting: bool)

Sets whether the window should request startup notification.

By default, after showing the first Window, GTK calls Gdk::Toplevel::set_startup_id(). Call this function to disable the automatic startup notification. You might do this if your first window is a splash screen, and you want to delay notification until after your real main window has been shown, for example.

In that example, you would disable startup notification temporarily, show your splash screen, then re-enable it so that showing the main window would automatically result in notification.

setting

true to automatically do startup notification

pub fn set_default_icon_name(name: &str)

Sets an icon to be used as fallback.

The fallback icon is used for windows that haven’t had GtkWindowExt::set_icon_name() called on them.

name

the name of the themed icon

pub fn set_interactive_debugging(enable: bool)

Opens or closes the interactive debugger.

The debugger offers access to the widget hierarchy of the application and to useful debugging tools.

enable

true to enable interactive debugging

Trait Implementations

impl Clone for Window

fn clone(&self) -> Self

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Window

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Window

fn default() -> Self

Returns the “default value” for a type.

impl Display for Window

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl HasParamSpec for Window

type ParamSpec = ParamSpecObject

type SetValue = Window

Preferred value to be used as setter for the associated ParamSpec.

type BuilderFn = fn(_: &str) -> ParamSpecObjectBuilder<'_, Window>

fn param_spec_builder() -> Self::BuilderFn

impl Hash for Window

fn hash<H>(&self, state: &mut H)where H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<T: WindowImpl> IsSubclassable<T> for Window

fn class_init(class: &mut Class<Self>)

Override the virtual methods of this class for the given subclass and do other class initialization.

fn instance_init(instance: &mut InitializingObject<T>)

Instance specific initialization.

impl Ord for Window

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval.

impl ParentClassIs for Window

type Parent = Widget

impl<OT: ObjectType> PartialEq<OT> for Window

fn eq(&self, other: &OT) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<OT: ObjectType> PartialOrd<OT> for Window

fn partial_cmp(&self, other: &OT) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl StaticType for Window

fn static_type() -> Type

Returns the type identifier of Self.

impl Eq for Window

impl IsA<Accessible> for Window

impl IsA<Buildable> for Window

impl IsA<ConstraintTarget> for Window

impl IsA<Native> for Window

impl IsA<Root> for Window

impl IsA<ShortcutManager> for Window

impl IsA<Widget> for Window

impl IsA<Window> for AboutDialog

impl IsA<Window> for AppChooserDialog

impl IsA<Window> for ApplicationWindow

impl IsA<Window> for Assistant

impl IsA<Window> for ColorChooserDialog

impl IsA<Window> for Dialog

impl IsA<Window> for FileChooserDialog

impl IsA<Window> for FontChooserDialog

impl IsA<Window> for MessageDialog

impl IsA<Window> for PageSetupUnixDialog

Available on Linux only.

impl IsA<Window> for PrintUnixDialog

Available on Linux only.

impl IsA<Window> for ShortcutsWindow