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NAME    [Toc]    [Back]

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

SYNOPSIS    [Toc]    [Back]

       #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 vid_puts(attr_t attrs, short pair, void *opts, int (*putc)(char));
       int vid_attr(attr_t attrs, short pair, void *opts);
       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    [Toc]    [Back]

       These  low-level  routines must be called by programs that have to deal
       directly with the terminfo database to handle certain terminal capabilities,
 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 automatically
  called  by initscr and newterm.	This defines the set of terminal-dependent
 variables [listed in terminfo(5)].   The  terminfo  variables
  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  variables
  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 database
 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.  Parameterized
 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

       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 output
 is to file descriptor fildes which is initialized for  output.   If
       errret  is not null, then setupterm returns OK or ERR and stores a status
 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

       The set_curterm routine sets the variable cur_term to nterm, and  makes
       all of the terminfo boolean, numeric, and string variables use the values
 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, references
 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 example,
 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

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

       The vid_attr and vid_puts routines correspond to vidattr  and  vidputs,
       respectively.   They  use a set of arguments for representing the video
       attributes plus color, i.e., one of type attr_t for the attributes  and
       one of short for the color_pair number.	The vid_attr and vid_puts routines
 are designed to use the attribute constants with the WA_  prefix.
       The  opts argument is reserved for future use.  Currently, applications
       must provide a null pointer for that argument.

       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 description.

       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

       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

       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    [Toc]    [Back]

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

       Routines that return pointers always return NULL on error.

NOTES    [Toc]    [Back]

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

       Note that vidattr and vidputs may be macros.

PORTABILITY    [Toc]    [Back]

       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

       The XSI Curses standard prototypes tparm with a fixed number of parameters,
  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  System
  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 specified.

SEE ALSO    [Toc]    [Back]

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

[ Back ]
 Similar pages
Name OS Title
tigetnum Tru64 Curses interfaces to the terminfo database
vidputs Tru64 Curses interfaces to the terminfo database
mvcur Tru64 Curses interfaces to the terminfo database
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restartterm Tru64 Curses interfaces to the terminfo database
tigetflag Tru64 Curses interfaces to the terminfo database
tigetstr Tru64 Curses interfaces to the terminfo database
tparm Tru64 Curses interfaces to the terminfo database
tputs Tru64 Curses interfaces to the terminfo database
vidattr Tru64 Curses interfaces to the terminfo database
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