GTK+ Now Shows Activate Menu in VirtualBox, Requires XDG-Shell 6 for Wayland

A new development version of the GTK+ GUI (Graphical User Interface) toolkit used for creating beautiful and modern apps for the GNOME desktop environment has been released.

GTK+ 3.21.6 is now the latest development snapshot before the launch of the GNOME 3.22 desktop environment next Wednesday, September 21, 2016, and, as usual, we managed to get our hands on the internal changelog to tell you what new features and improvements have been implemented since the previous release.

According to the release notes, which have been attached at the end of the article for your viewing pleasure, it appears that GTK+ 3.21.6 requires XDG-Shell version 6 for Wayland support, improves scrollbars, updates the cross-fade() function to correctly apply the cross-fading effect, and modernizes the example apps for newcomers.