I'm using Lubuntu 12.10 and I know of two ways to tell if a specific program uses GTK2 or GTK3:
- I can make changes in
~/.themes/theme_name/gtk-2.0/gtkrc, for example, and see if a specific application's appearance is altered.
- I can run
ldd /usr/bin/specific_application | grep gtk
Both these work on a per-app basis.
Is there a way to get a list of installed applications based on whether they use GTK2 or GTK3?