On Sat, 18 May 2019 13:04:16 +0200, Mike Wey wrote:

The current release of GtkD is based on GTK 3.22, and git master is at 3.24.

On a related topic...

How can I find out which features are implemented and which aren't? Is it a matter of digging through the source, or is there another way?

As to 'the source' I'm assuming there's something other than the generated wrapper code? (I really don't know how these wrapper things work.)