https://docs.oracle.com/cd/E86824_01/html/E54767/mvwinwch-3curses.html
mvwinwch - man pages section 3: Curses Library Functions
curs_inwch , inwch , winwch , mvinwch , mvwinwch - get a wchar_t character and its attributes from a curses window
man pagessectioncurseslibraryfunctions