Is "def_prog_mode()" implemented?

[xaionaro]

I need to run an external application. StackOverflow recommends this way [1]:

def_prog_mode() then endwin() execute system call and refresh() should restore it

[1] https://stackoverflow.com/questions/3258163/c-going-from-ncurses-ui-to-external-program-and-back

Is there a way to call def_prog_mode() via goncurses?