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curs_util(3X)							 curs_util(3X)

NAME
       unctrl,	keyname, filter, use_env, putwin, getwin, delay_output, flush‐
       inp - miscellaneous curses utility routines

SYNOPSIS
       #include <curses.h>

       char *unctrl(chtype c);
       char *keyname(int c);
       void filter(void);
       void use_env(bool f);
       int putwin(WINDOW *win, FILE *filep);
       WINDOW *getwin(FILE *filep);
       int delay_output(int ms);
       int flushinp(void);

DESCRIPTION
       The unctrl macro expands to a character string  which  is  a  printable
       representation of the character c.  Control characters are displayed in
       the ^X notation.	 Printing characters are displayed as is.

       The keyname routine returns a character string corresponding to the key
       c.

       The  filter  routine, if used, must be called before initscr or newterm
       are called.  The effect is that, during those calls, LINES is set to 1;
       the  capabilities  clear,  cup, cud, cud1, cuu1, cuu, vpa are disabled;
       and the home string is set to the value of cr.

       The use_env routine, if used, is called before initscr or  newterm  are
       called.	When called with FALSE as an argument, the values of lines and
       columns specified in the terminfo database will be used, even if	 envi‐
       ronment	variables  LINES  and COLUMNS (used by default) are set, or if
       curses is running in a window (in which case default behavior would  be
       to use the window size if LINES and COLUMNS are not set).

       The  putwin routine writes all data associated with window win into the
       file to which filep points.  This information can  be  later  retrieved
       using the getwin function.

       The  getwin  routine  reads  window  related data stored in the file by
       putwin.	The routine then creates and initializes a  new	 window	 using
       that data.  It returns a pointer to the new window.

       The  delay_output  routine  inserts  an ms millisecond pause in output.
       This routine should not be used extensively because padding  characters
       are used rather than a CPU pause.

       The  flushinp  routine throws away any typeahead that has been typed by
       the user and has not yet been read by the program.

RETURN VALUE
       Except for flushinp, routines that return an integer  return  ERR  upon
       failure	and OK (SVr4 specifies only "an integer value other than ERR")
       upon successful completion.

       flushinp always returns OK.

       Routines that return pointers return NULL on error.

PORTABILITY
       The XSI Curses standard, Issue 4 describes these functions.

       The SVr4 documentation describes the  action  of	 filter	 only  in  the
       vaguest	terms.	 The  description  here is adapted from the XSI Curses
       standard (which erroneously fails to describe the disabling of cuu).

NOTES
       Note that unctrl is a macro, which is defined in <unctrl.h>.

SEE ALSO
       curses(3X), curs_initscr(3X), curs_scr_dump(3X).

								 curs_util(3X)
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