Hi,
I spend few evenings creating bindings for CFLTK / FLTK. It is not only call H2Pas but made own converter tool which convert macros as flatten C methods and do a lot of stuff.
Description: FLTK is very lightweight multiplatform GUI written in C++. It doesn't use Qt / GTK / WinCtrls in backend but pure X11 / GDI. It is similar to our fpGUI / MSEGUI for Free Pascal.
I need some testers for windows and macos because I'm not able do it by my self for now
Link:
https://github.com/dibok/PasFLTKRegards
EDIT: Version: 1.5.23.2 with fixed external library name for multiplatform support
EDIT2: Version 1.5.23.3 with experimental static linking. There is an issue which I could not solve. If there is FPC guru and could help me, please see section "Building project using PasFLTK and static libs (experimental with not solved bugs)" in the main page (README.md)
EDIT3: Version 1.5.23.4. Finally fixed issue with static linking and now this mode is default instead of shared libs. For more info go to the main page (README.md)