Function ncursesw::use_env

pub fn use_env(flag: bool)

If used, this function should be called before initscr() or newterm() are called. When flag is false, the values of lines and columns specified in the terminfo database will be used, even if environment variables LINES and COLUMNS (used by default) are set, or if NCurses is running in a window (in which case default behavior would be to use the window size if LINES and COLUMNS are not set).