These functions are extensions to the curses library which do not fit easily into other categories.
Use curses_version() to get the version number, including patch level of the library, e.g., 5.0.19991023
The use_extended_names() function controls whether the calling application is able to use user-defined or nonstandard names which may be compiled into the terminfo description, i.e., via the terminfo or termcap interfaces. Normally these names are available for use, since the essential descision is made by using the -x option of tic to compile extended terminal definitions. However you can disable this feature to ensure compatiblity with other implementations of curses
These routines are specific to ncurses. They were not supported on Version 7, BSD or System V implementations. It is recommended that any code depending on them be conditioned using NCURSES_VERSION.
curs_getch(3), curs_mouse(3), curs_print(3), default_colors(3), define_key(3), keybound(3), keyok(3), resizeterm(3), wresize(3).