I'm surprised that there hasn't been much interest in porting good applications from other platforms to OS4 using FLTK. I've found a really nice spreadsheet here: http://nab.pcug.org.au/
It's called simply sprsht1.2.2. Complete source (Window and Linux binaries too) is included and it has a configurable GUI. The only dependency is FLTK. I sold my PegII about 18 months ago or I'd take a stab at porting this to OS4 using Massimiliano's FLTK library. Is anybody here willing to take this on? I've looked over the source code and I don't think it would take more than a few hours to have a working OS4 binary.
I tried to use FLTK once, and discovered that our version was too old. That was quite a few years ago, but our FLTK hasn't been updated since it was initially released, as SpotUP says.
Dunno what version sprsht needs, but I'd be surprised if it worked on our old one.
abalaban over at AmigWorld has updated FLTK. He has a slight problem though.
I have on my HD an updated FLTK port that adds: - mousewheel support - abiliy to access volumes and assigns when accessing '/'
The only problem preventing its release is that it seems I'm unable to compile it with a working JPEG support anymore. My test program is an updated flPhoto and when using this version I can't save (or rotate I don't remember) a JPEG without obtaining an error message (I forgot right now but I can provide it if required).
I managed to recompile fltk with its companion libraries (there are three libjpeg, libpng and libz) and now flphoto works again. So I'll probably clean all this and release a new version of both fltk and flphoto relatively soon (though probably not before the end of the next week because of real-life constraints).