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curs_terminfo(3X)					     curs_terminfo(3X)

NAME
       setupterm,   setterm,  set_curterm,  del_curterm,  restartterm,	tparm,
       tputs, putp, vidputs, vidattr, mvcur, tigetflag, tigetnum,  tigetstr  -
       curses interfaces to terminfo database

SYNOPSIS
       #include <curses.h>
       #include <term.h>

       int setupterm(const char *term, int fildes, int *errret);
       int setterm(const char *term);
       TERMINAL *set_curterm(TERMINAL *nterm);
       int del_curterm(TERMINAL *oterm);
       int restartterm(const char *term, int fildes, int *errret);
       char *tparm(const char *str, ...);
       int tputs(const char *str, int affcnt, int (*putc)(int));
       int putp(const char *str);
       int vidputs(chtype attrs, int (*putc)(char));
       int vidattr(chtype attrs);
       int mvcur(int oldrow, int oldcol, int newrow, int newcol);
       int tigetflag(const char *capname);
       int tigetnum(const char *capname);
       char *tigetstr(const char *capname);

DESCRIPTION
       These  low-level	 routines must be called by programs that have to deal
       directly with the terminfo database to handle certain terminal capabil‐
       ities, such as programming function keys.  For all other functionality,
       curses routines are more suitable and their use is recommended.

       Initially, setupterm should be called.  Note that setupterm is automat‐
       ically  called  by initscr and newterm.	This defines the set of termi‐
       nal-dependent variables [listed in terminfo(5)].	  The  terminfo	 vari‐
       ables  lines  and  columns  are initialized by setupterm as follows: If
       use_env(FALSE) has been called, values for lines and columns  specified
       in  terminfo  are  used.	 Otherwise, if the environment variables LINES
       and COLUMNS exist, their values are used.  If these  environment	 vari‐
       ables  do not exist and the program is running in a window, the current
       window size is used.  Otherwise, if the environment  variables  do  not
       exist, the values for lines and columns specified in the terminfo data‐
       base are used.

       The header files curses.h and term.h should be included (in this order)
       to  get the definitions for these strings, numbers, and flags.  Parame‐
       terized strings should be passed through	 tparm	to  instantiate	 them.
       All  terminfo strings [including the output of tparm] should be printed
       with tputs or putp.  Call the reset_shell_mode to restore the tty modes
       before  exiting	[see  curs_kernel(3X)].	  Programs  which  use	cursor
       addressing should output enter_ca_mode upon startup and	should	output
       exit_ca_mode  before  exiting.	Programs desiring shell escapes should
       call

       reset_shell_mode and output exit_ca_mode before the shell is called and
       should  output  enter_ca_mode  and call reset_prog_mode after returning
       from the shell.

       The setupterm routine reads in the terminfo database, initializing  the
       terminfo	 structures,  but  does	 not  set up the output virtualization
       structures used by curses.  The terminal type is the  character	string
       term; if term is null, the environment variable TERM is used.  All out‐
       put is to file descriptor fildes which is initialized for  output.   If
       errret  is not null, then setupterm returns OK or ERR and stores a sta‐
       tus value in the integer pointed to by errret.  A return	 value	of  OK
       combined	 with  status  of  1 in errret is normal.  If ERR is returned,
       examine errret:

	      1	   means that the terminal is hardcopy,	 cannot	 be  used  for
		   curses applications.

	      0	   means that the terminal could not be found, or that it is a
		   generic type, having	 too  little  information  for	curses
		   applications to run.

	      -1   means that the terminfo database could not be found.

       If  errret  is  null, setupterm prints an error message upon finding an
       error and exits.	 Thus, the simplest call is:

	     setupterm((char *)0, 1, (int *)0);,

       which uses all the defaults and sends the output to stdout.

       The setterm routine is being replaced by setupterm.  The call:

	     setupterm(term, 1, (int *)0)

       provides the same functionality as setterm(term).  The setterm  routine
       is  included here for BSD compatibility, and is not recommended for new
       programs.

       The set_curterm routine sets the variable cur_term to nterm, and	 makes
       all of the terminfo boolean, numeric, and string variables use the val‐
       ues from nterm.	It returns the old value of cur_term.

       The del_curterm routine frees the space pointed to by oterm  and	 makes
       it available for further use.  If oterm is the same as cur_term, refer‐
       ences to any of the terminfo boolean,  numeric,	and  string  variables
       thereafter   may	 refer	to  invalid  memory  locations	until  another
       setupterm has been called.

       The restartterm routine is similar to  setupterm	 and  initscr,	except
       that it is called after restoring memory to a previous state (for exam‐
       ple, when reloading a game saved as a core  image  dump).   It  assumes
       that  the windows and the input and output options are the same as when
       memory was saved, but the terminal type and baud rate may be different.
       Accordingly,  it	 saves	various	 tty state bits, does a setupterm, and
       then restores the bits.

       The tparm routine instantiates the string str with  parameters  pi.   A
       pointer is returned to the result of str with the parameters applied.

       The  tputs  routine  applies  padding information to the string str and
       outputs it.  The str must be a terminfo string variable or  the	return
       value  from  tparm,  tgetstr,  or tgoto.	 affcnt is the number of lines
       affected, or 1 if not applicable.  putc is a  putchar-like  routine  to
       which the characters are passed, one at a time.

       The putp routine calls tputs(str, 1, putchar).  Note that the output of
       putp always goes to stdout, not to the fildes specified in setupterm.

       The vidputs routine displays the string on the terminal	in  the	 video
       attribute mode attrs, which is any combination of the attributes listed
       in curses(3X).  The characters are passed to the	 putchar-like  routine
       putc.

       The vidattr routine is like the vidputs routine, except that it outputs
       through putchar.

       The mvcur routine provides low-level cursor motion.   It	 takes	effect
       immediately (rather than at the next refresh).

       The  tigetflag,	tigetnum and tigetstr routines return the value of the
       capability corresponding to the terminfo capname passed to  them,  such
       as xenl.

       The  tigetflag routine returns the value -1 if capname is not a boolean
       capability, or 0 if it is canceled or absent from the terminal descrip‐
       tion.

       The  tigetnum  routine returns the value -2 if capname is not a numeric
       capability, or -1 if  it	 is  canceled  or  absent  from	 the  terminal
       description.

       The  tigetstr  routine returns the value (char *)-1 if capname is not a
       string capability, or 0 if it is canceled or absent from	 the  terminal
       description.

       The  capname  for each capability is given in the table column entitled
       capname code in the capabilities section of terminfo(5).

       char *boolnames, *boolcodes, *boolfnames

       char *numnames, *numcodes, *numfnames

       char *strnames, *strcodes, *strfnames

       These null-terminated arrays contain the capnames, the  termcap	codes,
       and the full C names, for each of the terminfo variables.

RETURN VALUE
       Routines	 that  return  an integer return ERR upon failure and OK (SVr4
       only specifies "an integer value other than ERR") upon successful  com‐
       pletion, unless otherwise noted in the preceding routine descriptions.

       Routines that return pointers always return NULL on error.

NOTES
       The  setupterm  routine	should be used in place of setterm.  It may be
       useful when you want to test for terminal capabilities without  commit‐
       ting to the allocation of storage involved in initscr.

       Note that vidattr and vidputs may be macros.

PORTABILITY
       The  function  setterm  is not described in the XSI Curses standard and
       must be considered non-portable.	 All other functions are as  described
       in the XSI curses standard.

       In  System  V Release 4, set_curterm has an int return type and returns
       OK or ERR.  We have chosen to implement the XSI Curses semantics.

       In System V Release 4, the third argument of tputs  has	the  type  int
       (*putc)(char).

       The XSI Curses standard prototypes tparm with a fixed number of parame‐
       ters, rather than a variable argument  list.   That  prototype  assumes
       that  none  of the parameters are strings (or if so, that a long is big
       enough to hold a pointer).  The variable argument list  implemented  in
       ncurses does not rely on that assumption.

       XSI  notes that after calling mvcur, the curses state may not match the
       actual terminal state, and that an application should touch and refresh
       the  window before resuming normal curses calls.	 Both ncurses and Sys‐
       tem V Release 4 curses implement mvcur using the SCREEN data  allocated
       in either initscr or newterm.  So though it is documented as a terminfo
       function, mvcur is really a curses function which is  not  well	speci‐
       fied.

SEE ALSO
       curses(3X),    curs_initscr(3X),	  curs_kernel(3X),   curs_termcap(3X),
       putc(3S), terminfo(5)

							     curs_terminfo(3X)
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