Many thanks for the help :) I'd like to note that I tried Arnavion's method and it worked. I initially tried Fan's method, but the file does not seem to exist among the files in the bundle available on gtk.org , so I modified the headers instead. Maybe someone should add that file to the bundle? Or make the modified headers the default headers, as the program seems to compile fine on both windows and linux with the modified files. My program compiles fine with gtk3 now, many thanks for the assistance! > _______________________________________________ > gtk-list mailing list > gtk-list@xxxxxxxxx > https://mail.gnome.org/mailman/listinfo/gtk-list > _______________________________________________ gtk-list mailing list gtk-list@xxxxxxxxx https://mail.gnome.org/mailman/listinfo/gtk-list