http://www.gtk.org/
http://sourceforge.net/projects/gimp-win/
http://ftp.gnome.org/pub/gnome/binaries/
http://ftp.gnome.org/pub/GNOME/binaries/win64/gtkmm/
http://ftp.gnome.org/pub/GNOME/binaries/win32/gtkmm/
https://wiki.gnome.org/Attic/GtkmmOnWindows