reserved identifier violation

[elfring]

I would like to point out that identifiers like "__LIBUI_UI_UNIX_H__" and "_UI_EXTERN" do eventually not fit to the expected naming convention of the C++ language standard.
Would you like to adjust your selection for unique names?

[andlabs]

Yes, there's always a risk when anyone uses _ at the beginning of a name for the private namespace. I suppose I could use a different prefix like UI_I_ or something like that; not sure.

[elfring]

How do you think about to avoid that this software depends on undefined behaviour?

[andlabs]

I chose uipriv as a prefix. No ETA on changing existing things (especially since I need to go back and find the ones not in ui.h); that will be last in #308 though (which is basically a mass renaming project).