use_env(3X)                                                     use_env(3X)

NAME
     useenv - specify source of screen size information

SYNOPSIS
     cc [flag ...] file ... -lcurses [library ...]

     #include <curses.h>

     void useenv(bool boolval);

DESCRIPTION
     The useenv() function specifies the technique by which the implemen-
     tation determines the size of the screen. If boolval is FALSE, the
     implementation uses the values of lines and columns specified in the
     terminfo database. If boolval is TRUE, the implementation uses the
     LINES and COLUMNS environment variables. The initial value is TRUE.

     Any call to useenv() must precede calls to initscr(), newterm() or
     setupterm().

RETURN VALUE
     The function does not return a value.

ERRORS
     No errors are defined.

SEE ALSO
     curses(3X), delcurterm(3X), initscr(3X), curses(5).



























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