Well here's the latest screenshot which uses datatypes to load images.
Datatypes ... so outdated :) We use Reggae here.
If You want to add Reggae to FinalWriter feel free to ask if something is
not clear or check my internal reggae tester
Using Reggae one has ability to get aspect ratio / dpi of loaded images which is useful in such applications.
I would love to support Reggae which in the future there's a good chance the MorphOS version will. However currently we're using Datatypes because neither AROS nor AOS4 have Reggae.