GTK_STYLE_CLASS_HORIZONTAL

• AccelFlags
• Align
• Allocation
• ApplicationInhibitFlags
• ArrowPlacement
• ArrowType
• AssistantPageType
• AttachOptions
• BaselinePosition
• BorderStyle
• BuilderError
• ButtonBoxStyle
• ButtonRole
• ButtonsType
• CalendarDisplayOptions
• CellRendererAccelMode
• CellRendererMode
• CellRendererState
• CornerType
• CssProviderError
• CssSectionType
• DebugFlag
• DeleteType
• DestDefaults
• DialogFlags
• DirectionType
• DragResult
• EntryIconPosition
• EventControllerScrollFlags
• EventSequenceState
• ExpanderStyle
• FileChooserAction
• FileChooserConfirmation
• FileChooserError
• FileFilterFlags
• FontChooserLevel
• GtkAllocation
• GtkStock
• IMPreeditStyle
• IMStatusStyle
• IconLookupFlags
• IconSize
• IconThemeError
• IconViewDropPosition
• ImageType
• InputHints
• InputPurpose
• JunctionSides
• Justification
• LevelBarMode
• License
• MenuDirectionType
• MessageType
• MovementStep
• NotebookTab
• NumberUpLayout
• Orientation
• PackDirection
• PackType
• PadActionType
• PageOrientation
• PageSet
• PanDirection
• PathPriorityType
• PathType
• PlacesOpenFlags
• PolicyType
• PopoverConstraint
• PositionType
• PrintDuplex
• PrintError
• PrintOperationAction
• PrintOperationResult
• PrintPages
• PrintQuality
• PrintStatus
• PropagationPhase
• RcFlags
• RcTokenType
• RecentChooserError
• RecentFilterFlags
• RecentManagerError
• RecentSortType
• RegionFlags
• ReliefStyle
• ResizeMode
• ResponseType
• RevealerTransitionType
• ScrollStep
• ScrollType
• ScrollablePolicy
• SelectionMode
• SensitivityType
• ShadowType
• ShortcutType
• SizeGroupMode
• SizeRequestMode
• SortType
• SpinButtonUpdatePolicy
• SpinType
• StackTransitionType
• StateFlags
• StateType
• StyleContextPrintFlags
• TargetFlags
• TextBufferTargetInfo
• TextDirection
• TextExtendSelection
• TextSearchFlags
• TextViewLayer
• TextWindowType
• ToolPaletteDragTargets
• ToolbarSpaceStyle
• ToolbarStyle
• TreeModelFlags
• TreeViewColumnSizing
• TreeViewDropPosition
• TreeViewGridLines
• UIManagerItemType
• Unit
• WidgetHelpType
• WindowPosition
• WindowType
• WrapMode

• GtkAccelFlags
• GtkAlign
• GtkApplicationInhibitFlags
• GtkArrowPlacement
• GtkArrowType
• GtkAssistantPageType
• GtkAttachOptions
• GtkBaselinePosition
• GtkBorderStyle
• GtkBuilderError
• GtkButtonBoxStyle
• GtkButtonRole
• GtkButtonsType
• GtkCalendarDisplayOptions
• GtkCellRendererAccelMode
• GtkCellRendererMode
• GtkCellRendererState
• GtkCornerType
• GtkCssProviderError
• GtkCssSectionType
• GtkDebugFlag
• GtkDeleteType
• GtkDestDefaults
• GtkDialogFlags
• GtkDirectionType
• GtkDragResult
• GtkEntryIconPosition
• GtkEventControllerScrollFlags
• GtkEventSequenceState
• GtkExpanderStyle
• GtkFileChooserAction
• GtkFileChooserConfirmation
• GtkFileChooserError
• GtkFileFilterFlags
• GtkFontChooserLevel
• GtkIMPreeditStyle
• GtkIMStatusStyle
• GtkIconLookupFlags
• GtkIconSize
• GtkIconThemeError
• GtkIconViewDropPosition
• GtkImageType
• GtkInputHints
• GtkInputPurpose
• GtkJunctionSides
• GtkJustification
• GtkLevelBarMode
• GtkLicense
• GtkMenuDirectionType
• GtkMessageType
• GtkMovementStep
• GtkNotebookTab
• GtkNumberUpLayout
• GtkOrientation
• GtkPackDirection
• GtkPackType
• GtkPadActionType
• GtkPageOrientation
• GtkPageSet
• GtkPanDirection
• GtkPathPriorityType
• GtkPathType
• GtkPlacesOpenFlags
• GtkPolicyType
• GtkPopoverConstraint
• GtkPositionType
• GtkPrintDuplex
• GtkPrintError
• GtkPrintOperationAction
• GtkPrintOperationResult
• GtkPrintPages
• GtkPrintQuality
• GtkPrintStatus
• GtkPropagationPhase
• GtkRcFlags
• GtkRcTokenType
• GtkRecentChooserError
• GtkRecentFilterFlags
• GtkRecentManagerError
• GtkRecentSortType
• GtkRegionFlags
• GtkReliefStyle
• GtkResizeMode
• GtkResponseType
• GtkRevealerTransitionType
• GtkScrollStep
• GtkScrollType
• GtkScrollablePolicy
• GtkSelectionMode
• GtkSensitivityType
• GtkShadowType
• GtkShortcutType
• GtkSizeGroupMode
• GtkSizeRequestMode
• GtkSortType
• GtkSpinButtonUpdatePolicy
• GtkSpinType
• GtkStackTransitionType
• GtkStateFlags
• GtkStateType
• GtkStyleContextPrintFlags
• GtkTargetFlags
• GtkTextBufferTargetInfo
• GtkTextDirection
• GtkTextExtendSelection
• GtkTextSearchFlags
• GtkTextViewLayer
• GtkTextWindowType
• GtkToolPaletteDragTargets
• GtkToolbarSpaceStyle
• GtkToolbarStyle
• GtkTreeModelFlags
• GtkTreeViewColumnSizing
• GtkTreeViewDropPosition
• GtkTreeViewGridLines
• GtkUIManagerItemType
• GtkUnit
• GtkWidgetHelpType
• GtkWindowPosition
• GtkWindowType
• GtkWrapMode

• GtkAboutDialog
• GtkAboutDialogClass
• GtkAboutDialogPrivate