Release Notes: The configuration file and immodules cache locations were backported from GTK+3. Various minor bugs were fixed.
Release Notes: GtkSearchBar, a pop-up search toolbar, and GtkListBox, a vertical container that can sort and filter its children, were added. GtkStack gained position-dependent transitions. Various minor bugs were fixed.
Release Notes: GtkWindow gained support for client-side decorations, for use with Wayland. GtkFileChooser was improved. Various new APIs, widgets, and features were added, such as GtkHeaderBar, GtkPlacesSidebar, GtkStack, and GtkRevealer. The Wayland and Broadway backends were improved. GdkDisplayManager is no longer backend-specific. The symbol exporting functionality was refactored. Further improvements and many bugfixes were made.
Release Notes: Several minor bugs were fixed.
Release Notes: Cycle detection was added to CSS color resolving. The Broadway backend gained various improvements. Several bugs were fixed.
Release Notes: Many significant improvements and enhancements were made, notably in the fields of touch, theming, geometry management, and accessibility. Bugs were fixed.
Release Notes: Various GtkFileChooserButton fixes were made, along with other minor fixes.
Release Notes: The Window Manager frame synchronization protocol draft is now supported. An opacity can now be set to any GtkWidget, not just toplevels. The GtkIconTheme gained asynchronous loaders for GtkIconInfo objects. GtkIconInfo has changed from being a boxed type to a GObject. Various minor bugs were fixed.
Release Notes: GtkItemFactory now produces GtkSeparatorMenuItems. GtkFileChooserButton no longer overwrites the previously-determined filename if a subsequent dialog is closed/cancelled. Spinning now stops reliably when a GtkSpinButton is hidden.
Release Notes: GtkTreeView and GtkIconView now allow single-click activation. GtkImage can now be set from a resource. GdkWaylandDisplay is now public. A new function to let windows be fullscreened across multiple monitors was added. Minor bugs were fixed.