Thomas Gummerer <t.gummerer@xxxxxxxxx> writes: > We seem to have plenty of structs defined in '.c' files, if they are > only needed there. Its use also seems to be single purpose for the > callback data, so I'm a bit puzzled how having this in a header file > instead of the .c file would be helpful? > > I feel like having only the "public" part in the header file also > helps developers that are just looking for documentation of the > functions they are looking at, by having less things to go through, > that they wouldn't necessarily care about. Yup, sounds like a sensible criterion to choose between <*.h> and <*.c>.