Namespace

Gtk – 4.0

The GTK toolkit

Version	4.19.1
Authors	GTK Development Team
License	LGPL-2.1-or-later
Website	https://www.gtk.org
Source	https://gitlab.gnome.org/GNOME/gtk/

Build

C headers	`gtk/gtk.h`
pkg-config files	`gtk4`

Dependencies

Gdk—4.0	The GTK windowing system abstraction
	Browse documentation
Gsk—4.0	The GTK rendering abstraction
	Browse documentation

GObject	The base type system library
	Browse documentation
GIO	GObject Interfaces and Objects, Networking, IPC, and I/O
	Browse documentation
Graphene	A thin layer of mathematical types for 3D libraries
	Browse documentation
Pango	Text shaping and rendering
	Browse documentation

Additional documentation

Classes

AboutDialog	Displays information about a program.
ActionBar	Presents contextual actions.
ActivateAction	Activates a widget.
Adjustment	A model for a numeric value.
AlertDialog	Collects the arguments that are needed to present a message to the user. since: 4.10
AlternativeTrigger	Combines two shortcut triggers.
AnyFilter	Matches an item when at least one of its filters matches.
AppChooserButton	The `GtkAppChooserButton` lets the user select an application. deprecated: 4.10
AppChooserDialog	`GtkAppChooserDialog` shows a `GtkAppChooserWidget` inside a `GtkDialog`. deprecated: 4.10
AppChooserWidget	`GtkAppChooserWidget` is a widget for selecting applications. deprecated: 4.10
Application	A high-level API for writing applications.
ApplicationWindow	A `GtkWindow` subclass that integrates with `GtkApplication`.
AspectFrame	Preserves the aspect ratio of its child.
Assistant	`GtkAssistant` is used to represent a complex as a series of steps. deprecated: 4.10
AssistantPage	`GtkAssistantPage` is an auxiliary object used by `GtkAssistant`. deprecated: 4.10
ATContext	Communicates with platform-specific assistive technologies API.
BinLayout	A layout manager for widgets with a single child.
BookmarkList	A list model that wraps `GBookmarkFile`.
BoolFilter	Evaluates a boolean expression to determine whether to include items.
Box	Arranges child widgets into a single row or column.
BoxLayout	Arranges children in a single row or column.
Builder	Reads XML descriptions of a user interface and instantiates the described objects.
BuilderCScope	A `GtkBuilderScope` implementation for the C language.
BuilderListItemFactory	Creates widgets by instantiating `GtkBuilder` UI templates.
Button	Calls a callback function when the button is clicked.
Calendar	Displays a Gregorian calendar, one month at a time.
CallbackAction	Invokes a callback.
CClosureExpression	A variant of `GtkClosureExpression` using a C closure.
CellArea	An abstract class for laying out `GtkCellRenderer`s. deprecated: 4.10
CellAreaBox	A cell area that renders GtkCellRenderers into a row or a column. deprecated: 4.10
CellAreaContext	Stores geometrical information for a series of rows in a GtkCellArea. deprecated: 4.10
CellRenderer	An object for rendering a single cell. deprecated: 4.10
CellRendererAccel	Renders a keyboard accelerator in a cell. deprecated: 4.10
CellRendererCombo	Renders a combobox in a cell. deprecated: 4.10
CellRendererPixbuf	Renders a pixbuf in a cell. deprecated: 4.10
CellRendererProgress	Renders numbers as progress bars. deprecated: 4.10
CellRendererSpin	Renders a spin button in a cell. deprecated: 4.10
CellRendererSpinner	Renders a spinning animation in a cell. deprecated: 4.10
CellRendererText	Renders text in a cell. deprecated: 4.10
CellRendererToggle	Renders a toggle button in a cell. deprecated: 4.10
CellView	A widget displaying a single row of a GtkTreeModel. deprecated: 4.10
CenterBox	Arranges three children in a row, keeping the middle child centered as well as possible.
CenterLayout	Manages up to three children.
CheckButton	Places a label next to an indicator.
ClosureExpression	An expression using a custom `GClosure` to compute the value from its parameters.
ColorButton	The `GtkColorButton` allows to open a color chooser dialog to change the color. deprecated: 4.10
ColorChooserDialog	A dialog for choosing a color. deprecated: 4.10
ColorChooserWidget	The `GtkColorChooserWidget` widget lets the user select a color. deprecated: 4.10
ColorDialog	Asynchronous API to present a color chooser dialog. since: 4.10
ColorDialogButton	Opens a color chooser dialog to select a color. since: 4.10
ColumnView	Presents a large dynamic list of items using multiple columns with headers.
ColumnViewCell	Represents items in a cell in `GtkColumnView`. since: 4.12
ColumnViewColumn	Represents the columns in a `GtkColumnView`.
ColumnViewRow	Configures how rows are displayed in a `GtkColumnView`. since: 4.12
ColumnViewSorter	Sorts `GtkColumnView` columns. since: 4.10
ComboBox	A `GtkComboBox` is a widget that allows the user to choose from a list of valid choices. deprecated: 4.10
ComboBoxText	A `GtkComboBoxText` is a simple variant of `GtkComboBox` for text-only use cases. deprecated: 4.10
ConstantExpression	A constant value in a `GtkExpression`.
Constraint	Describes a constraint between attributes of two widgets, expressed as a linear equation.
ConstraintGuide	An invisible layout element in a `GtkConstraintLayout`.
ConstraintLayout	Uses constraints to describe relations between widgets.
ConstraintLayoutChild	`GtkLayoutChild` subclass for children in a `GtkConstraintLayout`.
CssProvider	A style provider for CSS.
CustomFilter	Determines whether to include items with a callback.
CustomLayout	Uses closures for size negotiation.
CustomSorter	Sorts items via a callback function.
Dialog	Dialogs are a convenient way to prompt the user for a small amount of input. deprecated: 4.10
DirectoryList	A list model that wraps `g_file_enumerate_children_async()`.
DragIcon	A `GtkRoot` implementation for drag icons.
DragSource	An event controller to initiate Drag-And-Drop operations.
DrawingArea	Allows drawing with cairo.
DropControllerMotion	An event controller tracking the pointer during Drag-and-Drop operations.
DropDown	Allows the user to choose an item from a list of options.
DropTarget	An event controller to receive Drag-and-Drop operations.
DropTargetAsync	An event controller to receive Drag-and-Drop operations, asynchronously.
EditableLabel	Allows users to edit the displayed text by switching to an “edit mode”.
EmojiChooser	Used by text widgets to let users insert Emoji characters.
Entry	A single-line text entry widget.
EntryBuffer	Holds the text that is displayed in a single-line text entry widget.
EntryCompletion	`GtkEntryCompletion` is an auxiliary object to provide completion functionality for `GtkEntry`. deprecated: 4.10
EventController	The base class for event controllers.
EventControllerFocus	Tracks keyboard focus.
EventControllerKey	Provides access to key events.
EventControllerLegacy	Provides raw access to the event stream.
EventControllerMotion	Tracks the pointer position.
EventControllerScroll	Handles scroll events.
EveryFilter	Matches an item when each of its filters matches.
Expander	Allows the user to reveal or conceal a child widget.
Expression	Provides a way to describe references to values.
FileChooserDialog	`GtkFileChooserDialog` is a dialog suitable for use with “File Open” or “File Save” commands. deprecated: 4.10
FileChooserNative	`GtkFileChooserNative` is an abstraction of a dialog suitable for use with “File Open” or “File Save as” commands. deprecated: 4.10
FileChooserWidget	`GtkFileChooserWidget` is a widget for choosing files. deprecated: 4.10
FileDialog	Asynchronous API to present a file chooser dialog. since: 4.10
FileFilter	Filters files by name or mime type.
FileLauncher	Asynchronous API to open a file with an application. since: 4.10
Filter	Describes the filtering to be performed by a `GtkFilterListModel`.
FilterListModel	A list model that filters the elements of another model.
Fixed	Places its child widgets at fixed positions and with fixed sizes.
FixedLayout	Places child widgets at fixed positions.
FixedLayoutChild	`GtkLayoutChild` subclass for children in a `GtkFixedLayout`.
FlattenListModel	A list model that concatenates other list models.
FlowBox	Puts child widgets in a reflowing grid.
FlowBoxChild	The kind of widget that can be added to a `GtkFlowBox`.
FontButton	The `GtkFontButton` allows to open a font chooser dialog to change the font. deprecated: 4.10
FontChooserDialog	The `GtkFontChooserDialog` widget is a dialog for selecting a font. deprecated: 4.10
FontChooserWidget	The `GtkFontChooserWidget` widget lets the user select a font. deprecated: 4.10
FontDialog	Asynchronous API to present a font chooser dialog. since: 4.10
FontDialogButton	Opens a font chooser dialog to select a font. since: 4.10
Frame	Surrounds its child with a decorative frame and an optional label.
Gesture	The base class for gesture recognition.
GestureClick	Recognizes click gestures.
GestureDrag	Recognizes drag gestures.
GestureLongPress	Recognizes long press gestures.
GesturePan	Recognizes pan gestures.
GestureRotate	Recognizes 2-finger rotation gestures.
GestureSingle	A `GtkGesture` subclass optimized for singe-touch and mouse gestures.
GestureStylus	Recognizes tablet stylus input.
GestureSwipe	Recognizes swipe gestures.
GestureZoom	Recognizes 2-finger pinch/zoom gestures.
GLArea	Allows drawing with OpenGL.
GraphicsOffload	Bypasses gsk rendering by passing the content of its child directly to the compositor. since: 4.14
Grid	Arranges its child widgets in rows and columns.
GridLayout	Arranges child widgets in rows and columns.
GridLayoutChild	`GtkLayoutChild` subclass for children in a `GtkGridLayout`.
GridView	Presents a large dynamic grid of items.
HeaderBar	Creates a custom titlebar for a window.
IconPaintable	Contains information found when looking up an icon in `GtkIconTheme`.
IconTheme	Loads themed icons.
IconView	`GtkIconView` is a widget which displays data in a grid of icons. deprecated: 4.10
Image	Displays an image.
IMContext	The interface for GTK input methods.
IMContextSimple	Supports compose sequences, dead keys and numeric Unicode input.
IMMulticontext	Supports switching between multiple input methods.
InfoBar	`GtkInfoBar` can be used to show messages to the user without a dialog. deprecated: 4.10
Inscription	Shows text in a predefined area. since: 4.8
KeyvalTrigger	Triggers when a specific keyval and modifiers are pressed.
Label	Displays a small amount of text.
LayoutChild	The base class for objects that are meant to hold layout properties.
LayoutManager	Handles the preferred size and allocation for children of a widget.
LevelBar	Shows a level indicator.
LinkButton	A button with a hyperlink.
ListBase	The abstract base class for GTK’s list widgets.
ListBox	Shows a vertical list.
ListBoxRow	The kind of widget that can be added to a `GtkListBox`.
ListHeader	Used by list widgets to represent the headers they display. since: 4.12
ListItem	Used by list widgets to represent items in a `GListModel`.
ListItemFactory	Creates widgets for the items taken from a `GListModel`.
ListStore	A list-like data structure that can be used with the `GtkTreeView`. deprecated: 4.10
ListView	Presents a large dynamic list of items.
LockButton	`GtkLockButton` is a widget to obtain and revoke authorizations needed to operate the controls. deprecated: 4.10
MapListModel	A list model that maps the items in another model to different items.
MediaControls	Shows controls for video playback.
MediaFile	Implements the `GtkMediaStream` interface for files.
MediaStream	The integration point for media playback inside GTK.
MenuButton	Displays a popup when clicked.
MessageDialog	`GtkMessageDialog` presents a dialog with some message text. deprecated: 4.10
MnemonicAction	Activates a widget with a mnemonic.
MnemonicTrigger	Triggers when a specific mnemonic is pressed.
MountOperation	Asks the user for passwords and other information required to mount a volume.
MultiFilter	Base class for filters that combine multiple filters.
MultiSelection	A selection model that allows selecting multiple elements.
MultiSorter	Combines multiple sorters by trying them in turn.
NamedAction	Activates a named action.
NativeDialog	Base class for platform dialogs that don’t use `GtkDialog`.
NeverTrigger	A `GtkShortcutTrigger` that never triggers.
NoSelection	A selection model that does not allow selecting anything.
Notebook	Switches between children using tabs.
NotebookPage	An auxiliary object used by `GtkNotebook`.
NothingAction	Does nothing.
NumericSorter	Sorts items numerically.
ObjectExpression	A `GObject` value in a `GtkExpression`.
Overlay	Places “overlay” widgets on top of a single main child.
OverlayLayout	The layout manager used by `GtkOverlay`.
OverlayLayoutChild	`GtkLayoutChild` subclass for children in a `GtkOverlayLayout`.
PadController	Handles input from the pads found in drawing tablets.
PageSetup	Stores page size, orientation and margins for printing.
PageSetupUnixDialog	Presents a page setup dialog for platforms which don’t provide a native page setup dialog, like Unix.
Paned	Arranges its children in two panes, horizontally or vertically.
ParamSpecExpression	A `GParamSpec` for properties holding a `GtkExpression`.
PasswordEntry	A single-line text entry widget for entering passwords and other secrets.
PasswordEntryBuffer	A `GtkEntryBuffer` that locks the underlying memory to prevent it from being swapped to disk. since: 4.4
Picture	Displays a `GdkPaintable`.
Popover	Presents a bubble-like popup.
PopoverMenu	A subclass of `GtkPopover` that implements menu behavior.
PopoverMenuBar	Presents a horizontal bar of items that pop up menus when clicked.
PrintContext	Encapsulates context information that is required when drawing pages for printing.
PrintDialog	Asynchronous API to present a print dialog to the user. since: 4.14
Printer	Represents a printer.
PrintJob	Represents a job that is sent to a printer.
PrintOperation	High-level, portable printing API.
PrintSettings	Collects the settings of a print dialog in a system-independent way.
PrintUnixDialog	A print dialog for platforms which don’t provide a native print dialog, like Unix.
ProgressBar	Displays the progress of a long-running operation.
PropertyExpression	A `GObject` property value in a `GtkExpression`.
Range	Base class for widgets which visualize an adjustment.
RecentManager	Manages and looks up recently used files.
Revealer	Animates the transition of its child from invisible to visible.
Scale	Allows to select a numeric value with a slider control.
ScaleButton	Provides a button which pops up a scale widget.
Scrollbar	Shows a horizontal or vertical scrollbar.
ScrolledWindow	Makes its child scrollable.
SearchBar	Reveals a search entry when search is started.
SearchEntry	A single-line text entry widget for use as a search entry.
SelectionFilterModel	A list model that presents the selection from a `GtkSelectionModel`.
Separator	Draws a horizontal or vertical line to separate other widgets.
Settings	Provides a mechanism to share global settings between applications.
Shortcut	Describes a keyboard shortcut.
ShortcutAction	Encodes an action that can be triggered by a keyboard shortcut.
ShortcutController	Manages keyboard shortcuts and their activation.
ShortcutLabel	`GtkShortcutLabel` displays a single keyboard shortcut or gesture. deprecated: 4.18
ShortcutsGroup	A `GtkShortcutsGroup` represents a group of related keyboard shortcuts or gestures. deprecated: 4.18
ShortcutsSection	A `GtkShortcutsSection` collects all the keyboard shortcuts and gestures for a major application mode. deprecated: 4.18
ShortcutsShortcut	A `GtkShortcutsShortcut` represents a single keyboard shortcut or gesture with a short text. deprecated: 4.18
ShortcutsWindow	A `GtkShortcutsWindow` shows information about the keyboard shortcuts and gestures of an application. deprecated: 4.18
ShortcutTrigger	Tracks how a `GtkShortcut` can be activated.
SignalAction	Emits a signal on a widget.
SignalListItemFactory	Emits signals to manage listitems.
SingleSelection	A selection model that allows selecting a single item.
SizeGroup	Groups widgets together so they all request the same size.
SliceListModel	A list model that presents a slice of another model.
Snapshot	Assists in creating `GskRenderNode`s for widgets.
Sorter	Describes sorting criteria for a `GtkSortListModel`.
SortListModel	A list model that sorts the elements of another model.
SpinButton	Allows to enter or change numeric values.
Spinner	Displays an icon-size spinning animation.
Stack	Shows one of its children at a time.
StackPage	An auxiliary class used by `GtkStack`.
StackSidebar	Uses a sidebar to switch between `GtkStack` pages.
StackSwitcher	Shows a row of buttons to switch between `GtkStack` pages.
Statusbar	A `GtkStatusbar` widget is usually placed along the bottom of an application’s main `GtkWindow`. deprecated: 4.10
StringFilter	Determines whether to include items by comparing strings to a fixed search term.
StringList	A list model that wraps an array of strings.
StringObject	The type of items in a `GtkStringList`.
StringSorter	Sorts items by comparing strings.
StyleContext	`GtkStyleContext` stores styling information affecting a widget. deprecated: 4.10
Switch	Shows a “light switch” that has two states: on or off.
Text	A single-line text entry.
TextBuffer	Stores text and attributes for display in a `GtkTextView`.
TextChildAnchor	Marks a spot in a `GtkTextBuffer` where child widgets can be “anchored”.
TextMark	Marks a position in a `GtkTextbuffer` that is preserved across modifications.
TextTag	Can be applied to text contained in a `GtkTextBuffer`.
TextTagTable	Collects the tags in a `GtkTextBuffer`.
TextView	Displays the contents of a `GtkTextBuffer`.
ToggleButton	Shows a button which remains “pressed-in” when clicked.
Tooltip	Represents a widget tooltip.
TreeExpander	Provides an expander for a tree-like list.
TreeListModel	A list model that can create child models on demand.
TreeListRow	The type of item used by `GtkTreeListModel`.
TreeListRowSorter	Applies a gives sorter to the levels in a tree.
TreeModelFilter	A `GtkTreeModel` which hides parts of an underlying tree model. deprecated: 4.10
TreeModelSort	A GtkTreeModel which makes an underlying tree model sortable. deprecated: 4.10
TreeSelection	The selection object for GtkTreeView. deprecated: 4.10
TreeStore	A tree-like data structure that can be used with the `GtkTreeView`. deprecated: 4.10
TreeView	A widget for displaying both trees and lists. deprecated: 4.10
TreeViewColumn	A visible column in a `GtkTreeView` widget. deprecated: 4.10
UriLauncher	Asynchronous API to open a uri with an application. since: 4.10
Video	Shows a `GtkMediaStream` with media controls.
Viewport	Implements scrollability for widgets that don’t support scrolling on their own.
VolumeButton	`GtkVolumeButton` is a `GtkScaleButton` subclass tailored for volume control. deprecated: 4.10
Widget	The base class for all widgets.
WidgetPaintable	A `GdkPaintable` that displays the contents of a widget.
Window	A toplevel window which can contain other widgets.
WindowControls	Shows window frame controls.
WindowGroup	Creates groups of windows that behave like separate applications.
WindowHandle	Implements titlebar functionality for a window.

Interfaces

Accessible	An interface for describing UI elements for Assistive Technologies.
AccessibleRange	An interface for accessible objects containing a numeric value. since: 4.10
AccessibleText	An interface for accessible objects containing formatted text. since: 4.14
Actionable	Provides a way to associate widgets with actions.
AppChooser	`GtkAppChooser` is an interface for widgets which allow the user to choose an application. deprecated: 4.10
Buildable	Allows objects to extend and customize deserialization from ui files.
BuilderScope	Provides language binding support to `GtkBuilder`.
CellEditable	Interface for widgets that can be used for editing cells. deprecated: 4.10
CellLayout	An interface for packing cells. deprecated: 4.10
ColorChooser	`GtkColorChooser` is an interface that is implemented by widgets for choosing colors. deprecated: 4.10
ConstraintTarget	Makes it possible to use an object as source or target in a `GtkConstraint`.
Editable	Interface for single-line text editing widgets.
FileChooser	`GtkFileChooser` is an interface that can be implemented by file selection widgets. deprecated: 4.10
FontChooser	`GtkFontChooser` is an interface that can be implemented by widgets for choosing fonts. deprecated: 4.10
Native	An interface for widgets that have their own `GdkSurface`.
Orientable	An interface for widgets that can be oriented horizontally or vertically.
PrintOperationPreview	The interface that is used to implement print preview.
Root	An interface for widgets that can act as the root of a widget hierarchy.
Scrollable	An interface for widgets with native scrolling ability.
SectionModel	An interface that adds support for sections to list models. since: 4.12
SelectionModel	An interface that adds support for selection to list models.
ShortcutManager	An interface that is used to implement shortcut scopes.
StyleProvider	An interface for style information used by `GtkStyleContext`.
SymbolicPaintable	An interface that supports symbolic colors in paintables. since: 4.6
TreeDragDest	Interface for Drag-and-Drop destinations in `GtkTreeView`. deprecated: 4.10
TreeDragSource	Interface for Drag-and-Drop destinations in `GtkTreeView`. deprecated: 4.10
TreeModel	The tree interface used by GtkTreeView. deprecated: 4.10
TreeSortable	The interface for sortable models used by GtkTreeView. deprecated: 4.10

Structs

AccessibleList	Wraps a list of references to `GtkAccessible` objects. since: 4.14
AccessibleTextRange	A range inside the text of an accessible object. since: 4.14
Bitset	A set of unsigned integers.
BitsetIter	Iterates over the elements of a `GtkBitset`.
Border	Specifies a border around a rectangular area.
BuildableParseContext	Provides context for parsing GtkBuilder UI files.
BuildableParser	A sub-parser for `GtkBuildable` implementations.
CssLocation	Points at a location inside a CSS stream.
CssSection	Defines a part of a CSS document.
CssStyleChange	A CSS style change.
ExpressionWatch	An opaque structure representing a watched `GtkExpression`.
PadActionEntry	Struct defining a pad action entry.
PageRange	A range of pages to print.
PaperSize	`GtkPaperSize` handles paper sizes.
PrintBackend	A print backend.
PrintSetup	An auxiliary object for printing that allows decoupling the setup from the printing. since: 4.14
RecentData	Meta-data to be passed to `gtk_recent_manager_add_full()` when registering a recently used resource.
RecentInfo	Contains the metadata associated with an item in the recently used files list.
RequestedSize	Represents a request of a screen object in a given orientation.
Requisition	Represents the desired size of a widget.
ScrollInfo	Provides detailed information on how a scroll operation should be performed. since: 4.12
TextIter	Iterates over the contents of a `GtkTextBuffer`.
TreeIter	The `GtkTreeIter` is the primary structure for accessing a `GtkTreeModel`. Models are expected to put a unique integer in the `stamp` member, and put model-specific data in the three `user_data` members. deprecated: 4.10
TreePath	An opaque structure representing a path to a row in a model. deprecated: 4.10
TreeRowReference	A GtkTreeRowReference tracks model changes so that it always refers to the same row (a `GtkTreePath` refers to a position, not a fixed row). Create a new GtkTreeRowReference with gtk_tree_row_reference_new(). deprecated: 4.10

Aliases

Allocation

The rectangle representing the area allocated for a widget by its parent.

Enumerations

AccessibleAnnouncementPriority	The priority of an accessibility announcement. since: 4.14
AccessibleAutocomplete	The possible values for the `GTK_ACCESSIBLE_PROPERTY_AUTOCOMPLETE` accessible property.
AccessibleInvalidState	The possible values for the `GTK_ACCESSIBLE_STATE_INVALID` accessible state.
AccessiblePlatformState	The various platform states which can be queried using `gtk_accessible_get_platform_state()`. since: 4.10
AccessibleProperty	The possible accessible properties of a `GtkAccessible`.
AccessibleRelation	The possible accessible relations of a `GtkAccessible`.
AccessibleRole	The accessible role for a `GtkAccessible` implementation.
AccessibleSort	The possible values for the `GTK_ACCESSIBLE_PROPERTY_SORT` accessible property.
AccessibleState	The possible accessible states of a `GtkAccessible`.
AccessibleTextContentChange	The type of contents change operation. since: 4.14
AccessibleTextGranularity	The granularity for queries about the text contents of a `GtkAccessibleText` implementation. since: 4.14
AccessibleTristate	The possible values for the `GTK_ACCESSIBLE_STATE_PRESSED` accessible state.
Align	Controls how a widget deals with extra space in a single dimension.
ArrowType	Indicates the direction in which an arrow should point.
AssistantPageType	Determines the role of a page inside a `GtkAssistant`. deprecated: 4.10
BaselinePosition	Baseline position in a row of widgets.
BorderStyle	Describes how the border of a UI element should be rendered.
ButtonsType	Prebuilt sets of buttons for `GtkDialog`.
CellRendererAccelMode	The available modes for `GtkCellRendererAccel:accel-mode`. deprecated: 4.20
CellRendererMode	Identifies how the user can interact with a particular cell. deprecated: 4.20
Collation	Describes how a `GtkStringSorter` turns strings into sort keys to compare them. since: 4.10
ConstraintAttribute	The widget attributes that can be used when creating a `GtkConstraint`.
ConstraintRelation	The relation between two terms of a constraint.
ConstraintStrength	The strength of a constraint, expressed as a symbolic constant.
ContentFit	Controls how a content should be made to fit inside an allocation. since: 4.8
CornerType	Specifies which corner a child widget should be placed in when packed into a `GtkScrolledWindow.`.
CssParserWarning	Warnings that can occur while parsing CSS.
DeleteType	Passed to various keybinding signals for deleting text.
DirectionType	Focus movement types.
EditableProperties	The identifiers for `GtkEditable` properties.
EntryIconPosition	Specifies the side of the entry at which an icon is placed.
EventSequenceState	Describes the state of a `GdkEventSequence` in a `GtkGesture`.
FileChooserAction	Describes whether a `GtkFileChooser` is being used to open existing files or to save to a possibly new file.
FilterChange	Describes changes in a filter in more detail and allows objects using the filter to optimize refiltering items.
FilterMatch	Describes the known strictness of a filter.
FontLevel	The level of granularity for the font selection. since: 4.10
FontRendering	Values for the `GtkSettings:gtk-font-rendering` setting that influence how GTK renders fonts. since: 4.16
GraphicsOffloadEnabled	Represents the state of graphics offloading. since: 4.14
IconSize	Built-in icon sizes.
IconViewDropPosition	An enum for determining where a dropped item goes. deprecated: 4.20
ImageType	Describes the image data representation used by a `GtkImage`.
InputPurpose	Describes primary purpose of the input widget.
InscriptionOverflow	The different methods to handle text in `GtkInscription` when it doesn’t fit the available space. since: 4.8
Justification	Used for justifying the text inside a `GtkLabel` widget.
LevelBarMode	Describes how `GtkLevelBar` contents should be rendered.
License	The type of license for an application.
ListTabBehavior	Used to configure the focus behavior in the `GTK_DIR_TAB_FORWARD` and `GTK_DIR_TAB_BACKWARD` direction, like the `Tab` key in a `GtkListView`. since: 4.12
MessageType	The type of message being displayed in a `GtkMessageDialog`.
MovementStep	Passed as argument to various keybinding signals for moving the cursor position.
NaturalWrapMode	Options for selecting a different wrap mode for natural size requests. since: 4.6
NotebookTab	The parameter used in the action signals of `GtkNotebook`.
NumberUpLayout	Used to determine the layout of pages on a sheet when printing multiple pages per sheet.
Ordering	Describes the way two values can be compared.
Orientation	Represents the orientation of widgets and other objects.
Overflow	Defines how content overflowing a given area should be handled.
PackType	Represents the packing location of a children in its parent.
PadActionType	The type of a pad action.
PageOrientation	See also gtk_print_settings_set_orientation().
PageSet	See also gtk_print_job_set_page_set().
PanDirection	Describes the panning direction of a `GtkGesturePan`.
PolicyType	Determines how the size should be computed to achieve the one of the visibility mode for the scrollbars.
PositionType	Describes which edge of a widget a certain feature is positioned at.
PrintDuplex	See also gtk_print_settings_set_duplex().
PrintOperationAction	Determines what action the print operation should perform.
PrintOperationResult	The result of a print operation.
PrintPages	See also gtk_print_job_set_pages().
PrintQuality	See also gtk_print_settings_set_quality().
PrintStatus	The status gives a rough indication of the completion of a running print operation.
PropagationLimit	Describes limits of a `GtkEventController` for handling events targeting other widgets.
PropagationPhase	Describes the stage at which events are fed into a `GtkEventController`.
ResponseType	Predefined values for use as response ids in gtk_dialog_add_button(). deprecated: 4.20
RevealerTransitionType	These enumeration values describe the possible transitions when the child of a `GtkRevealer` widget is shown or hidden.
ScrollablePolicy	Defines the policy to be used in a scrollable widget when updating the scrolled window adjustments in a given orientation.
ScrollStep	Passed as argument to various keybinding signals.
ScrollType	Scrolling types.
SelectionMode	Used to control what selections users are allowed to make.
SensitivityType	Determines how GTK handles the sensitivity of various controls, such as combo box buttons.
ShortcutScope	Describes where `GtkShortcut`s added to a `GtkShortcutController` get handled.
ShortcutType	GtkShortcutType specifies the kind of shortcut that is being described.
SizeGroupMode	The mode of the size group determines the directions in which the size group affects the requested sizes of its component widgets.
SizeRequestMode	Specifies a preference for height-for-width or width-for-height geometry management.
SorterChange	Describes changes in a sorter in more detail and allows users to optimize resorting.
SorterOrder	Describes the type of order that a `GtkSorter` may produce.
SortType	Determines the direction of a sort.
SpinButtonUpdatePolicy	Determines whether the spin button displays values outside the adjustment bounds.
SpinType	The values of the GtkSpinType enumeration are used to specify the change to make in gtk_spin_button_spin().
StackTransitionType	Possible transitions between pages in a `GtkStack` widget.
StringFilterMatchMode	Specifies how search strings are matched inside text.
SymbolicColor	The indexes of colors passed to symbolic color rendering, such as `Gtk.SymbolicPaintableInterface.snapshot_symbolic`. since: 4.6
SystemSetting	Values that can be passed to the `Gtk.WidgetClass.system_setting_changed` vfunc.
TextDirection	Reading directions for text.
TextExtendSelection	Granularity types that extend the text selection. Use the `GtkTextView::extend-selection` signal to customize the selection.
TextViewLayer	Used to reference the layers of `GtkTextView` for the purpose of customized drawing with the ::snapshot_layer vfunc.
TextWindowType	Used to reference the parts of `GtkTextView`.
TreeViewColumnSizing	The sizing method the column uses to determine its width. Please note that `GTK_TREE_VIEW_COLUMN_AUTOSIZE` are inefficient for large views, and can make columns appear choppy. deprecated: 4.20
TreeViewDropPosition	An enum for determining where a dropped row goes. deprecated: 4.20
TreeViewGridLines	Used to indicate which grid lines to draw in a tree view. deprecated: 4.20
Unit	See also gtk_print_settings_set_paper_width().
WindowGravity	Determines which point or edge of a window is meant to remain fixed when a window changes size. unstable since: 4.20
WrapMode	Describes a type of line wrapping.

Bitfields

ApplicationInhibitFlags	Types of user actions that may be blocked by `GtkApplication`.
BuilderClosureFlags	The list of flags that can be passed to gtk_builder_create_closure().
CellRendererState	Tells how a cell is to be rendered. deprecated: 4.20
DebugFlags	Flags to use with gtk_set_debug_flags().
DialogFlags	Flags used to influence dialog construction. deprecated: 4.20
EventControllerScrollFlags	Describes the behavior of a `GtkEventControllerScroll`.
FontChooserLevel	Specifies the granularity of font selection that is desired in a `GtkFontChooser`. deprecated: 4.20
IconLookupFlags	Used to specify options for gtk_icon_theme_lookup_icon().
InputHints	Describes hints that might be taken into account by input methods or applications.
ListScrollFlags	List of actions to perform when scrolling to items in a list widget. since: 4.12
PickFlags	Flags that influence the behavior of `gtk_widget_pick()`.
PopoverMenuFlags	Flags that affect how `GtkPopoverMenu` widgets built from a `GMenuModel` are created and displayed.
PrintCapabilities	Specifies which features the print dialog should offer.
ShortcutActionFlags	Flags that can be passed to action activation.
StateFlags	Describes a widget state.
StyleContextPrintFlags	Flags that modify the behavior of gtk_style_context_to_string().
TextBufferNotifyFlags	Values for `GtkTextBufferCommitNotify` to denote the point of the notification. since: 4.16
TextSearchFlags	Flags affecting how a search is done.
TreeModelFlags	These flags indicate various properties of a `GtkTreeModel`. deprecated: 4.10

Error Domains

BuilderError	Error codes that identify various errors that can occur while using `GtkBuilder`.
ConstraintVflParserError	Domain for VFL parsing errors.
CssParserError	Errors that can occur while parsing CSS.
DialogError	Error codes in the `GTK_DIALOG_ERROR` domain that can be returned by async dialog functions. since: 4.10
FileChooserError	These identify the various errors that can occur while calling `GtkFileChooser` functions. deprecated: 4.20
IconThemeError	Error codes for `GtkIconTheme` operations.
PrintError	Error codes that identify various errors that can occur while using the GTK printing support.
RecentManagerError	Error codes for `GtkRecentManager` operations.

Callbacks

AssistantPageFunc	Type of callback used to calculate the next page in a `GtkAssistant`.
CellAllocCallback	The type of the callback functions used for iterating over the cell renderers and their allocated areas inside a `GtkCellArea`, see gtk_cell_area_foreach_alloc(). deprecated: 4.20
CellCallback	The type of the callback functions used for iterating over the cell renderers of a `GtkCellArea`, see gtk_cell_area_foreach(). deprecated: 4.20
CellLayoutDataFunc	A function which should set the value of `cell_layout`’s cell renderer(s) as appropriate. deprecated: 4.20
CustomAllocateFunc	A function to be used by `GtkCustomLayout` to allocate a widget.
CustomFilterFunc	User function that is called to determine if the `item` should be matched.
CustomMeasureFunc	A function to be used by `GtkCustomLayout` to measure a widget.
CustomRequestModeFunc	Queries a widget for its preferred size request mode.
DrawingAreaDrawFunc	Whenever `drawing_area` needs to redraw, this function will be called.
EntryCompletionMatchFunc	A function which decides whether the row indicated by `iter` matches a given `key`, and should be displayed as a possible completion for `key`. deprecated: 4.20
ExpressionNotify	Callback called by `gtk_expression_watch()` when the expression value changes.
FlowBoxCreateWidgetFunc	Called for flow boxes that are bound to a `GListModel`.
FlowBoxFilterFunc	A function that will be called whenever a child changes or is added.
FlowBoxForeachFunc	A function used by gtk_flow_box_selected_foreach().
FlowBoxSortFunc	A function to compare two children to determine which should come first.
FontFilterFunc	The type of function that is used for deciding what fonts get shown in a `GtkFontChooser`. deprecated: 4.20
IconViewForeachFunc	A function used by `gtk_icon_view_selected_foreach()` to map all selected rows. deprecated: 4.20
ListBoxCreateWidgetFunc	Called for list boxes that are bound to a `GListModel` with `gtk_list_box_bind_model()` for each item that gets added to the model.
ListBoxFilterFunc	Will be called whenever the row changes or is added and lets you control if the row should be visible or not.
ListBoxForeachFunc	A function used by gtk_list_box_selected_foreach().
ListBoxSortFunc	Compare two rows to determine which should be first.
ListBoxUpdateHeaderFunc	Whenever `row` changes or which row is before `row` changes this is called, which lets you update the header on `row`.
MapListModelMapFunc	User function that is called to map an `item` of the original model to an item expected by the map model.
MenuButtonCreatePopupFunc	User-provided callback function to create a popup for a `GtkMenuButton` on demand.
PageSetupDoneFunc	The type of function that is passed to gtk_print_run_page_setup_dialog_async().
PrinterFunc	The type of function passed to gtk_enumerate_printers().
PrintJobCompleteFunc	The type of callback that is passed to gtk_print_job_send().
PrintSettingsFunc	Function called by `gtk_print_settings_foreach()` on every key/value pair inside a `GtkPrintSettings`.
ScaleFormatValueFunc	Function that formats the value of a scale.
ShortcutFunc	Type for shortcuts based on user callbacks.
TextBufferCommitNotify	A notification callback used by `gtk_text_buffer_add_commit_notify()`. since: 4.16
TextCharPredicate	The predicate function used by `gtk_text_iter_forward_find_char()` and gtk_text_iter_backward_find_char().
TextTagTableForeach	A function used with gtk_text_tag_table_foreach(), to iterate over every `GtkTextTag` inside a `GtkTextTagTable`.
TickCallback	Callback type for adding a function to update animations.
TreeCellDataFunc	A function to set the properties of a cell instead of just using the straight mapping between the cell and the model. deprecated: 4.20
TreeIterCompareFunc	A GtkTreeIterCompareFunc should return a negative integer, zero, or a positive integer if `a` sorts before `b`, `a` sorts with `b`, or `a` sorts after `b` respectively. deprecated: 4.20
TreeListModelCreateModelFunc	Prototype of the function called to create new child models when `gtk_tree_list_row_set_expanded()` is called.
TreeModelFilterModifyFunc	A function which calculates display values from raw values in the model. It must fill `value` with the display value for the column `column` in the row indicated by `iter`. deprecated: 4.20
TreeModelFilterVisibleFunc	A function which decides whether the row indicated by `iter` is visible. deprecated: 4.20
TreeModelForeachFunc	Type of the callback passed to `gtk_tree_model_foreach()` to iterate over the rows in a tree model. deprecated: 4.20
TreeSelectionForeachFunc	A function used by `gtk_tree_selection_selected_foreach()` to map all selected rows. It will be called on every selected row in the view. deprecated: 4.20
TreeSelectionFunc	A function used by `gtk_tree_selection_set_select_function()` to filter whether or not a row may be selected. It is called whenever a row’s state might change. deprecated: 4.20
TreeViewColumnDropFunc	Function type for determining whether `column` can be dropped in a particular spot (as determined by `prev_column` and `next_column`). In left to right locales, `prev_column` is on the left of the potential drop spot, and `next_column` is on the right. In right to left mode, this is reversed. This function should return `TRUE` if the spot is a valid drop spot. Please note that returning `TRUE` does not actually indicate that the column drop was made, but is meant only to indicate a possible drop spot to the user. deprecated: 4.20
TreeViewMappingFunc	Function used for gtk_tree_view_map_expanded_rows(). deprecated: 4.20
TreeViewRowSeparatorFunc	Function type for determining whether the row pointed to by `iter` should be rendered as a separator. A common way to implement this is to have a boolean column in the model, whose values the `GtkTreeViewRowSeparatorFunc` returns. deprecated: 4.20
TreeViewSearchEqualFunc	A function used for checking whether a row in `model` matches a search key string entered by the user. Note the return value is reversed from what you would normally expect, though it has some similarity to `strcmp()` returning 0 for equal strings. deprecated: 4.20
WidgetActionActivateFunc	The type of the callback functions used for activating actions installed with `gtk_widget_class_install_action()`.

Functions

accelerator_get_default_mod_mask	Gets the modifier mask.
accelerator_get_label	Converts an accelerator keyval and modifier mask into a string which can be used to represent the accelerator to the user.
accelerator_get_label_with_keycode	Converts an accelerator keyval and modifier mask into a string that can be displayed to the user.
accelerator_name	Converts an accelerator keyval and modifier mask into a string that can be parsed by `gtk_accelerator_parse()`.
accelerator_name_with_keycode	Converts an accelerator keyval and modifier mask into a string that can be parsed by `gtk_accelerator_parse_with_keycode()`.
accelerator_parse	Parses a string representing an accelerator.
accelerator_parse_with_keycode	Parses a string representing an accelerator.
accelerator_valid	Determines whether a given keyval and modifier mask constitute a valid keyboard accelerator.
check_version	Checks that the GTK library in use is compatible with the given version.
css_parser_error_quark	Registers an error quark for CSS parsing errors.
css_parser_warning_quark	Registers an error quark for CSS parsing warnings.
disable_portals	Prevents GTK from using portals. since: 4.18
disable_setlocale	Prevents `gtk_init()` and `gtk_init_check()` from calling `setlocale()`.
distribute_natural_allocation	Distributes `extra_space` to child `sizes` by bringing smaller children up to natural size first.
enumerate_printers	Calls a function for all printers that are known to GTK.
get_binary_age	Returns the binary age as passed to `libtool`.
get_debug_flags	Returns the GTK debug flags that are currently active.
get_default_language	Returns the `PangoLanguage` for the default language currently in effect.
get_interface_age	Returns the interface age as passed to `libtool`.
get_locale_direction	Gets the direction of the current locale.
get_major_version	Returns the major version number of the GTK library.
get_micro_version	Returns the micro version number of the GTK library.
get_minor_version	Returns the minor version number of the GTK library.
hsv_to_rgb	Converts a color from HSV space to RGB.
init	Initializes GTK.
init_check	Initializes GTK.
is_initialized	Returns whether GTK has been initialized.
param_spec_expression	Creates a new `GParamSpec` instance for a property holding a `GtkExpression`.
print_run_page_setup_dialog	Runs a page setup dialog, letting the user modify the values from `page_setup`.
print_run_page_setup_dialog_async	Runs a page setup dialog, letting the user modify the values from `page_setup`.
render_activity	Renders an activity indicator (such as in `GtkSpinner`). The state `GTK_STATE_FLAG_CHECKED` determines whether there is activity going on. deprecated: 4.10
render_arrow	Renders an arrow pointing to `angle`. deprecated: 4.10
render_background	Renders the background of an element. deprecated: 4.10
render_check	Renders a checkmark (as in a `GtkCheckButton`). deprecated: 4.10
render_expander	Renders an expander (as used in `GtkTreeView` and `GtkExpander`) in the area defined by `x`, `y`, `width`, `height`. The state `GTK_STATE_FLAG_CHECKED` determines whether the expander is collapsed or expanded. deprecated: 4.10
render_focus	Renders a focus indicator on the rectangle determined by `x`, `y`, `width`, `height`. deprecated: 4.10
render_frame	Renders a frame around the rectangle defined by `x`, `y`, `width`, `height`. deprecated: 4.10
render_handle	Renders a handle (as in `GtkPaned` and `GtkWindow`’s resize grip), in the rectangle determined by `x`, `y`, `width`, `height`. deprecated: 4.10
render_icon	Renders the icon in `texture` at the specified `x` and `y` coordinates. deprecated: 4.10
render_layout	Renders `layout` on the coordinates `x`, `y`. deprecated: 4.10
render_line	Renders a line from (x0, y0) to (x1, y1). deprecated: 4.10
render_option	Renders an option mark (as in a radio button), the `GTK_STATE_FLAG_CHECKED` state will determine whether the option is on or off, and `GTK_STATE_FLAG_INCONSISTENT` whether it should be marked as undefined. deprecated: 4.10
rgb_to_hsv	Converts a color from RGB space to HSV.
set_debug_flags	Sets the GTK debug flags.
show_about_dialog	A convenience function for showing an application’s about dialog.
show_uri	This function launches the default application for showing a given uri, or shows an error dialog if that fails. deprecated: 4.10
show_uri_full	This function launches the default application for showing a given uri. deprecated: 4.10
show_uri_full_finish	Finishes the `gtk_show_uri()` call and returns the result of the operation. deprecated: 4.10
test_accessible_assertion_message_role	Prints an assertion message for gtk_test_accessible_assert_role().
test_accessible_check_property	Checks whether the accessible `property` of `accessible` is set to a specific value.
test_accessible_check_relation	Checks whether the accessible `relation` of `accessible` is set to a specific value.
test_accessible_check_state	Checks whether the accessible `state` of `accessible` is set to a specific value.
test_accessible_has_property	Checks whether the `GtkAccessible` has `property` set.
test_accessible_has_relation	Checks whether the `GtkAccessible` has `relation` set.
test_accessible_has_role	Checks whether the `GtkAccessible:accessible-role` of the accessible is `role`.
test_accessible_has_state	Checks whether the `GtkAccessible` has `state` set.
test_init	This function is used to initialize a GTK test program.
test_list_all_types	Return the type ids that have been registered after calling gtk_test_register_all_types().
test_register_all_types	Force registration of all core GTK object types.
test_widget_wait_for_draw	Enters the main loop and waits for `widget` to be “drawn”.
tree_create_row_drag_content	Creates a content provider for dragging `path` from `tree_model`. deprecated: 4.10
tree_get_row_drag_data	Obtains a `tree_model` and `path` from value of target type `GTK_TYPE_TREE_ROW_DATA`. deprecated: 4.10
value_dup_expression	Retrieves the `GtkExpression` stored inside the given `value`, and acquires a reference to it.
value_get_expression	Retrieves the `GtkExpression` stored inside the given `value`.
value_set_expression	Stores the given `GtkExpression` inside `value`.
value_take_expression	Stores the given `GtkExpression` inside `value`.

Function Macros

builder_cscope_add_callback	Adds the `callback` to the scope of `builder` under its own name. since: 4.8
BUILDER_WARN_INVALID_CHILD_TYPE	This macro should be used to emit a warning about and unexpected `type` value in a `GtkBuildable` add_child implementation.
CELL_AREA_WARN_INVALID_CELL_PROPERTY_ID	This macro should be used to emit a standard warning about unexpected properties in `set_cell_property()` and `get_cell_property()` implementations. deprecated: 4.20
CHECK_VERSION	Returns true if the version of the GTK header files is the same as or newer than the passed-in version.
DEBUG_CHECK	Whether the `type` debug flag is set.
test_accessible_assert_property	Checks whether a `GtkAccessible` implementation has its accessible property set to the expected value, and raises an assertion if the condition is not satisfied.
test_accessible_assert_relation	Checks whether a `GtkAccessible` implementation has its accessible relation set to the expected value, and raises an assertion if the condition is not satisfied.
test_accessible_assert_role	Checks whether a `GtkAccessible` implementation has the given `role`, and raises an assertion if the condition is failed.
test_accessible_assert_state	Checks whether a `GtkAccessible` implementation has its accessible state set to the expected value, and raises an assertion if the condition is not satisfied.
VALUE_HOLDS_EXPRESSION	Evaluates to true if `value` was initialized with `GTK_TYPE_EXPRESSION`.
widget_class_bind_template_callback	Binds a callback function defined in a template to the `widget_class`.
widget_class_bind_template_child	Binds a child widget defined in a template to the `widget_class`.
widget_class_bind_template_child_internal	Binds a child widget defined in a template to the `widget_class`.
widget_class_bind_template_child_internal_private	Binds a child widget defined in a template to the `widget_class`.
widget_class_bind_template_child_private	Binds a child widget defined in a template to the `widget_class`.

Constants

ACCESSIBLE_ATTRIBUTE_BACKGROUND	An attribute for the background color, expressed as an RGB value encoded in a string using the format: `{r8},{g8},{b8}`.
ACCESSIBLE_ATTRIBUTE_FAMILY	An attribute for the font family name.
ACCESSIBLE_ATTRIBUTE_FOREGROUND	An attribute for the foreground color, expressed as an RGB value encoded in a string using the format: `{r8},{g8},{b8}`.
ACCESSIBLE_ATTRIBUTE_OVERLINE	An attribute for the overline style.
ACCESSIBLE_ATTRIBUTE_OVERLINE_NONE	The “none” overline value for `GTK_ACCESSIBLE_ATTRIBUTE_OVERLINE`.
ACCESSIBLE_ATTRIBUTE_OVERLINE_SINGLE	The “single” overline value for `GTK_ACCESSIBLE_ATTRIBUTE_OVERLINE`.
ACCESSIBLE_ATTRIBUTE_SIZE	An attribute for the font size, expressed in points.
ACCESSIBLE_ATTRIBUTE_STRETCH	An attribute for the font stretch type.
ACCESSIBLE_ATTRIBUTE_STRETCH_CONDENSED	The “condensed” stretch value for `GTK_ACCESSIBLE_ATTRIBUTE_STRETCH`.
ACCESSIBLE_ATTRIBUTE_STRETCH_EXPANDED	The “expanded” stretch value for `GTK_ACCESSIBLE_ATTRIBUTE_STRETCH`.
ACCESSIBLE_ATTRIBUTE_STRETCH_EXTRA_CONDENSED	The “extra condensed” stretch value for `GTK_ACCESSIBLE_ATTRIBUTE_STRETCH`.
ACCESSIBLE_ATTRIBUTE_STRETCH_EXTRA_EXPANDED	The “extra expanded” stretch value for `GTK_ACCESSIBLE_ATTRIBUTE_STRETCH`.
ACCESSIBLE_ATTRIBUTE_STRETCH_NORMAL	The “normal” stretch value for `GTK_ACCESSIBLE_ATTRIBUTE_STRETCH`.
ACCESSIBLE_ATTRIBUTE_STRETCH_SEMI_CONDENSED	The “semi condensed” stretch value for `GTK_ACCESSIBLE_ATTRIBUTE_STRETCH`.
ACCESSIBLE_ATTRIBUTE_STRETCH_SEMI_EXPANDED	The “semi expanded” stretch value for `GTK_ACCESSIBLE_ATTRIBUTE_STRETCH`.
ACCESSIBLE_ATTRIBUTE_STRETCH_ULTRA_CONDENSED	The “ultra condensed” stretch value for `GTK_ACCESSIBLE_ATTRIBUTE_STRETCH`.
ACCESSIBLE_ATTRIBUTE_STRETCH_ULTRA_EXPANDED	The “ultra expanded” stretch value for `GTK_ACCESSIBLE_ATTRIBUTE_STRETCH`.
ACCESSIBLE_ATTRIBUTE_STRIKETHROUGH	An attribute for strikethrough text.
ACCESSIBLE_ATTRIBUTE_STYLE	An attribute for the font style.
ACCESSIBLE_ATTRIBUTE_STYLE_ITALIC	The “italic” style value for `GTK_ACCESSIBLE_ATTRIBUTE_STYLE`.
ACCESSIBLE_ATTRIBUTE_STYLE_NORMAL	The “normal” style value for `GTK_ACCESSIBLE_ATTRIBUTE_STYLE`.
ACCESSIBLE_ATTRIBUTE_STYLE_OBLIQUE	The “oblique” style value for `GTK_ACCESSIBLE_ATTRIBUTE_STYLE`.
ACCESSIBLE_ATTRIBUTE_UNDERLINE	An attribute for the underline style.
ACCESSIBLE_ATTRIBUTE_UNDERLINE_DOUBLE	The “double” underline value for `GTK_ACCESSIBLE_ATTRIBUTE_UNDERLINE`.
ACCESSIBLE_ATTRIBUTE_UNDERLINE_ERROR	The “error” underline value for `GTK_ACCESSIBLE_ATTRIBUTE_UNDERLINE`.
ACCESSIBLE_ATTRIBUTE_UNDERLINE_NONE	The “none” underline value for `GTK_ACCESSIBLE_ATTRIBUTE_UNDERLINE`.
ACCESSIBLE_ATTRIBUTE_UNDERLINE_SINGLE	The “single” underline value for `GTK_ACCESSIBLE_ATTRIBUTE_UNDERLINE`.
ACCESSIBLE_ATTRIBUTE_VARIANT	An attribute for the font variant.
ACCESSIBLE_ATTRIBUTE_VARIANT_ALL_PETITE_CAPS	The “all petite caps” variant value for `GTK_ACCESSIBLE_ATTRIBUTE_VARIANT`.
ACCESSIBLE_ATTRIBUTE_VARIANT_ALL_SMALL_CAPS	The “all small caps” variant value for `GTK_ACCESSIBLE_ATTRIBUTE_VARIANT`.
ACCESSIBLE_ATTRIBUTE_VARIANT_PETITE_CAPS	The “petite caps” variant value for `GTK_ACCESSIBLE_ATTRIBUTE_VARIANT`.
ACCESSIBLE_ATTRIBUTE_VARIANT_SMALL_CAPS	The “small caps” variant value for `GTK_ACCESSIBLE_ATTRIBUTE_VARIANT`.
ACCESSIBLE_ATTRIBUTE_VARIANT_TITLE_CAPS	The “title caps” variant value for `GTK_ACCESSIBLE_ATTRIBUTE_VARIANT`.
ACCESSIBLE_ATTRIBUTE_VARIANT_UNICASE	The “unicase” variant value for `GTK_ACCESSIBLE_ATTRIBUTE_VARIANT`.
ACCESSIBLE_ATTRIBUTE_WEIGHT	An attribute for the font weight.
ACCESSIBLE_VALUE_UNDEFINED	An undefined value. The accessible attribute is either unset, or its value is undefined.
BINARY_AGE	Like `gtk_get_binary_age()`, but from the headers used at application compile time, rather than from the library linked against at application run time.
IM_MODULE_EXTENSION_POINT_NAME	The default name of the extension point.
INPUT_ERROR	Constant to return from a signal handler for the ::input signal in case of conversion failure.
INTERFACE_AGE	Like `gtk_get_interface_age()`, but from the headers used at application compile time, rather than from the library linked against at application run time.
INVALID_LIST_POSITION	The value used to refer to a guaranteed invalid position in a `GListModel`.
LEVEL_BAR_OFFSET_FULL	The name used for the stock full offset included by `GtkLevelBar`.
LEVEL_BAR_OFFSET_HIGH	The name used for the stock high offset included by `GtkLevelBar`.
LEVEL_BAR_OFFSET_LOW	The name used for the stock low offset included by `GtkLevelBar`.
MAJOR_VERSION	Like `gtk_get_major_version()`, but from the headers used at application compile time, rather than from the library linked against at application run time.
MAX_COMPOSE_LEN	Evaluates to the maximum length of a compose sequence.
MEDIA_FILE_EXTENSION_POINT_NAME	The default extension point name for media file.
MICRO_VERSION	Like `gtk_get_micro_version()`, but from the headers used at application compile time, rather than from the library linked against at application run time.
MINOR_VERSION	Like `gtk_get_minor_version()`, but from the headers used at application compile time, rather than from the library linked against at application run time.
PAPER_NAME_A3	Name for the A3 paper size.
PAPER_NAME_A4	Name for the A4 paper size.
PAPER_NAME_A5	Name for the A5 paper size.
PAPER_NAME_B5	Name for the B5 paper size.
PAPER_NAME_EXECUTIVE	Name for the Executive paper size.
PAPER_NAME_LEGAL	Name for the Legal paper size.
PAPER_NAME_LETTER	Name for the Letter paper size.
PRINT_SETTINGS_COLLATE	The key used by the “Print to file” printer to store whether to collate the printed pages.
PRINT_SETTINGS_DEFAULT_SOURCE	The key used by the “Print to file” printer to store the default source.
PRINT_SETTINGS_DITHER	The key used by the “Print to file” printer to store the dither used.
PRINT_SETTINGS_DUPLEX	The key used by the “Print to file” printer to store whether to print the output in duplex.
PRINT_SETTINGS_FINISHINGS	The key used by the “Print to file” printer to store the finishings.
PRINT_SETTINGS_MEDIA_TYPE	The key used by the “Print to file” printer to store the media type.
PRINT_SETTINGS_N_COPIES	The key used by the “Print to file” printer to store the number of copies.
PRINT_SETTINGS_NUMBER_UP	The key used by the “Print to file” printer to store the number of pages per sheet.
PRINT_SETTINGS_NUMBER_UP_LAYOUT	The key used by the “Print to file” printer to store the number of pages per sheet in number-up mode.
PRINT_SETTINGS_ORIENTATION	The key used by the “Print to file” printer to store the orientation.
PRINT_SETTINGS_OUTPUT_BASENAME	The key used by the “Print to file” printer to store the file name of the output without the path to the directory and the file extension.
PRINT_SETTINGS_OUTPUT_BIN	The key used by the “Print to file” printer to store the output bin.
PRINT_SETTINGS_OUTPUT_DIR	The key used by the “Print to file” printer to store the directory to which the output should be written.
PRINT_SETTINGS_OUTPUT_FILE_FORMAT	The key used by the “Print to file” printer to store the format of the output. The supported values are “PS” and “PDF”.
PRINT_SETTINGS_OUTPUT_URI	The key used by the “Print to file” printer to store the URI to which the output should be written. GTK itself supports only “file://” URIs.
PRINT_SETTINGS_PAGE_RANGES	The key used by the “Print to file” printer to store the array of page ranges to print.
PRINT_SETTINGS_PAGE_SET	The key used by the “Print to file” printer to store the set of pages to print.
PRINT_SETTINGS_PAPER_FORMAT	The key used by the “Print to file” printer to store the page format.
PRINT_SETTINGS_PAPER_HEIGHT	The key used by the “Print to file” printer to store the page height.
PRINT_SETTINGS_PAPER_WIDTH	The key used by the “Print to file” printer to store the paper width.
PRINT_SETTINGS_PRINT_PAGES	The key used by the “Print to file” printer to store which pages to print.
PRINT_SETTINGS_PRINTER	The key used by the “Print to file” printer to store the printer name.
PRINT_SETTINGS_PRINTER_LPI	The key used by the “Print to file” printer to store the resolution in lines per inch.
PRINT_SETTINGS_QUALITY	The key used by the “Print to file” printer to store the printing quality.
PRINT_SETTINGS_RESOLUTION	The key used by the “Print to file” printer to store the resolution in DPI.
PRINT_SETTINGS_RESOLUTION_X	The key used by the “Print to file” printer to store the horizontal resolution in DPI.
PRINT_SETTINGS_RESOLUTION_Y	The key used by the “Print to file” printer to store the vertical resolution in DPI.
PRINT_SETTINGS_REVERSE	The key used by the “Print to file” printer to store whether to reverse the order of the printed pages.
PRINT_SETTINGS_SCALE	The key used by the “Print to file” printer to store the scale.
PRINT_SETTINGS_USE_COLOR	The key used by the “Print to file” printer to store whether to print with colors.
PRINT_SETTINGS_WIN32_DRIVER_EXTRA	The key used by the “Print to file” printer to store 32-bit Windows extra driver.
PRINT_SETTINGS_WIN32_DRIVER_VERSION	The key used by the “Print to file” printer to store the 32-bit Windows driver version.
PRIORITY_RESIZE	Use this priority for functionality related to size allocation.
STYLE_PROVIDER_PRIORITY_APPLICATION	A priority that can be used when adding a `GtkStyleProvider` for application-specific style information.
STYLE_PROVIDER_PRIORITY_FALLBACK	The priority used for default style information that is used in the absence of themes.
STYLE_PROVIDER_PRIORITY_SETTINGS	The priority used for style information provided via `GtkSettings`.
STYLE_PROVIDER_PRIORITY_THEME	The priority used for style information provided by themes.
STYLE_PROVIDER_PRIORITY_USER	The priority used for the style information from `$XDG_CONFIG_HOME/gtk-4.0/gtk.css`.
TEXT_VIEW_PRIORITY_VALIDATE	The priority at which the text view validates onscreen lines in an idle job in the background.
TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID	Uses the default sort function in a `GtkTreeSortable`. deprecated: 4.20
TREE_SORTABLE_UNSORTED_SORT_COLUMN_ID	Disables sorting in a `GtkTreeSortable`. deprecated: 4.20

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