X-Git-Url: http://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=doc%2Fhtml%2Fman%2Fcurs_terminfo.3x.html;h=a10c39e7cee2111bab3a5b1e129cac51d041d484;hp=e9f873d14d43d185a69c7a2ddf191a3c575fa92a;hb=b793748293cd1a764b1a858455399ad899b5a8a1;hpb=3eda6f30a84d53844d2ebceadb457e2e7e9cfbf3
diff --git a/doc/html/man/curs_terminfo.3x.html b/doc/html/man/curs_terminfo.3x.html
index e9f873d1..a10c39e7 100644
--- a/doc/html/man/curs_terminfo.3x.html
+++ b/doc/html/man/curs_terminfo.3x.html
@@ -45,16 +45,15 @@
-curs_terminfo(3x) curs_terminfo(3x)
+curs_terminfo(3x) curs_terminfo(3x)
- del_curterm, mvcur, putp, restartterm, set_curterm,
- setterm, setupterm, tigetflag, tigetnum, tigetstr, tiparm,
- tparm, tputs, vid_attr, vid_puts, vidattr, vidputs -
- curses interfaces to terminfo database
+ del_curterm, mvcur, putp, restartterm, set_curterm, setterm, setupterm,
+ tigetflag, tigetnum, tigetstr, tiparm, tparm, tputs, vid_attr,
+ vid_puts, vidattr, vidputs - curses interfaces to terminfo database
@@ -98,44 +97,39 @@
- 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 func-
- tion keys. For all other functionality, curses routines
- are more suitable and their use is recommended.
+ 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. The high-level
- curses functions initscr and newterm call setupterm to
- initialize the low-level set of terminal-dependent vari-
- ables [listed in terminfo(5)].
-
- Applications can use the terminal capabilities either di-
- rectly (via header definitions), or by special functions.
- The header files curses.h and term.h should be included
- (in this order) to get the definitions for these strings,
- numbers, and flags.
-
- The terminfo variables lines and columns are initialized
- by setupterm as follows:
-
- o If use_env(FALSE) has been called, values for lines
- and columns specified in terminfo are used.
-
- o Otherwise, if the environment variables LINES and COL-
- UMNS exist, their values are used. If these environ-
- ment variables do not exist and the program is running
- in a window, the current window size is used. Other-
- wise, if the environment variables do not exist, the
- values for lines and columns specified in the terminfo
- database are used.
-
- 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 reset_shell_mode to restore the tty modes before ex-
- iting [see curs_kernel(3x)].
+ Initially, setupterm should be called. The high-level curses functions
+ initscr and newterm call setupterm to initialize the low-level set of
+ terminal-dependent variables [listed in terminfo(5)].
+
+ Applications can use the terminal capabilities either directly (via
+ header definitions), or by special functions. The header files curs-
+ es.h and term.h should be included (in this order) to get the defini-
+ tions for these strings, numbers, and flags.
+
+ The terminfo variables lines and columns are initialized by setupterm
+ as follows:
+
+ o If use_env(FALSE) has been called, values for lines and columns
+ specified in terminfo are used.
+
+ o 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.
+
+ 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 reset_shell_mode to restore the tty
+ modes before exiting [see curs_kernel(3x)].
Programs which use cursor addressing should
@@ -145,178 +139,159 @@
Programs which execute shell subprocesses should
- o call reset_shell_mode and output exit_ca_mode before
- the shell is called and
+ o call reset_shell_mode and output exit_ca_mode before the shell is
+ called and
- o output enter_ca_mode and call reset_prog_mode after
- returning from the shell.
+ o output enter_ca_mode and call reset_prog_mode after returning from
+ the shell.
- The setupterm routine reads in the terminfo database, ini-
- tializing the terminfo structures, but does not set up the
- output virtualization structures used by curses. These
- are its parameters:
+ The setupterm routine reads in the terminfo database, initializing the
+ terminfo structures, but does not set up the output virtualization
+ structures used by curses. These are its parameters:
- term is the terminal type, a character string. If term
- is null, the environment variable TERM is used.
+ term is the terminal type, a character string. If term is null, the
+ environment variable TERM is used.
filedes
is the file descriptor used for all output.
errret
- points to an optional location where an error sta-
- tus can be returned to the caller. 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.
+ points to an optional location where an error status can be re-
+ turned to the caller. 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 sta-
+ tus 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.
+ 1 means that the terminal is hardcopy, cannot be used for
+ curses applications.
- setupterm determines if the entry is a hard-
- copy type by checking the hc (hardcopy) capa-
- bility.
+ setupterm determines if the entry is a hardcopy type by
+ checking the hc (hardcopy) capability.
- 0 means that the terminal could not be found,
- or that it is a generic type, having too lit-
- tle information for curses applications to
- run.
+ 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.
- setupterm determines if the entry is a gener-
- ic type by checking the gn (generic) capabil-
- ity.
+ setupterm determines if the entry is a generic type by
+ checking the gn (generic) capability.
- -1 means that the terminfo database could not be
- found.
+ -1 means that the terminfo database could not be found.
- If errret is null, setupterm prints an error mes-
- sage upon finding an error and exits. Thus, the
- simplest call is:
+ If errret is null, setupterm prints an error message upon find-
+ ing 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.
+ which uses all the defaults and sends the output to stdout.
The setterm routine was replaced by setupterm. The call:
setupterm(term, 1, (int *)0)
- provides the same functionality as setterm(term). The
- setterm routine is provided for BSD compatibility, and is
- not recommended for new programs.
+ provides the same functionality as setterm(term). The setterm routine
+ is provided for BSD compatibility, and is not recommended for new pro-
+ grams.
- The setupterm routine stores its information about the
- terminal in a TERMINAL structure pointed to by the global
- variable cur_term. If it detects an error, or decides
- that the terminal is unsuitable (hardcopy or generic), it
- discards this information, making it not available to ap-
- plications.
-
- If setupterm is called repeatedly for the same terminal
- type, it will reuse the information. It maintains only
- one copy of a given terminal's capabilities in memory. If
- it is called for different terminal types, setupterm allo-
- cates new storage for each set of terminal capabilities.
-
- The set_curterm routine sets 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 re-
- fer 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). restartterm 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, restartterm saves various
- tty state bits, calls setupterm, and then restores the
- bits.
+ The setupterm routine stores its information about the terminal in a
+ TERMINAL structure pointed to by the global variable cur_term. If it
+ detects an error, or decides that the terminal is unsuitable (hardcopy
+ or generic), it discards this information, making it not available to
+ applications.
+
+ If setupterm is called repeatedly for the same terminal type, it will
+ reuse the information. It maintains only one copy of a given termi-
+ nal's capabilities in memory. If it is called for different terminal
+ types, setupterm allocates new storage for each set of terminal capa-
+ bilities.
+
+ The set_curterm routine sets 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, refer-
+ ences to any of the terminfo boolean, numeric, and string variables
+ thereafter may refer to invalid memory locations until another se-
+ tupterm 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). restartterm
+ 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, restartterm saves various tty state bits,
+ calls setupterm, and then restores the bits.
- The tparm routine instantiates the string str with parame-
- ters pi. A pointer is returned to the result of str with
- the parameters applied. Application developers should
- keep in mind these quirks of the interface:
+ The tparm routine instantiates the string str with parameters pi. A
+ pointer is returned to the result of str with the parameters applied.
+ Application developers should keep in mind these quirks of the inter-
+ face:
- o Although tparm's actual parameters may be integers or
- strings, the prototype expects long (integer) values.
+ o Although tparm's actual parameters may be integers or strings, the
+ prototype expects long (integer) values.
- o Aside from the set_attributes (sgr) capability, most
- terminal capabilities require no more than one or two
- parameters.
+ o Aside from the set_attributes (sgr) capability, most terminal capa-
+ bilities require no more than one or two parameters.
- tiparm is a newer form of tparm which uses <stdarg.h>
- rather than a fixed-parameter list. Its numeric parame-
- ters are integers (int) rather than longs.
+ tiparm is a newer form of tparm which uses <stdarg.h> rather than a
+ fixed-parameter list. Its numeric parameters are integers (int) rather
+ than longs.
- The tputs routine applies padding information to the
- string str and outputs it:
+ The tputs routine applies padding information to the string str and
+ outputs it:
- o The str must be a terminfo string variable or the re-
- turn value from tparm, tgetstr, or tgoto.
+ o The str must be a terminfo string variable or the return value from
+ tparm, tgetstr, or tgoto.
- o affcnt is the number of lines affected, or 1 if not
- applicable.
+ o affcnt is the number of lines affected, or 1 if not applicable.
- o putc is a putchar-like routine to which the characters
- are passed, one at a time.
+ o putc is a putchar-like routine to which the characters are passed,
+ one at a time.
- The putp routine calls tputs(str, 1, putchar). The output
- of putp always goes to stdout, rather than the filedes
- specified in setupterm.
+ The putp routine calls tputs(str, 1, putchar). The output of putp al-
+ ways goes to stdout, rather than the filedes 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 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 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.,
+ 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.,
o attrs of type attr_t for the attributes and
o pair of type 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 vid_attr and vid_puts routines are designed to use the attribute
+ constants with the WA_ prefix.
- X/Open Curses reserves the opts argument for future use,
- saying that applications must provide a null pointer for
- that argument. As an extension, this implementation al-
- lows opts to be used as a pointer to int, which overrides
- the pair (short) argument.
+ X/Open Curses reserves the opts argument for future use, saying that
+ applications must provide a null pointer for that argument. As an ex-
+ tension, this implementation allows opts to be used as a pointer to
+ int, which overrides the pair (short) argument.
- The mvcur routine provides low-level cursor motion. It
- takes effect immediately (rather than at the next re-
- fresh).
+ 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 cap-
- name passed to them, such as xenl. The capname for each
- capability is given in the table column entitled capname
- code in the capabilities section of terminfo(5).
+ The tigetflag, tigetnum and tigetstr routines return the value of the
+ capability corresponding to the terminfo capname passed to them, such
+ as xenl. The capname for each capability is given in the table column
+ entitled capname code in the capabilities section of terminfo(5).
These routines return special values to denote errors.
@@ -324,23 +299,20 @@
-1 if capname is not a boolean capability, or
- 0 if it is canceled or absent from the terminal de-
- scription.
+ 0 if it is canceled or absent from the terminal description.
The tigetnum routine returns
-2 if capname is not a numeric capability, or
- -1 if it is canceled or absent from the terminal de-
- scription.
+ -1 if it is canceled or absent from the terminal description.
The tigetstr routine returns
(char *)-1
if capname is not a string capability, or
- 0 if it is canceled or absent from the terminal de-
- scription.
+ 0 if it is canceled or absent from the terminal description.
@@ -354,44 +326,38 @@
for each of the predefined terminfo variables:
- const char *boolnames[], *boolcodes[], *boolf-
- names[]
+ const char *boolnames[], *boolcodes[], *boolfnames[]
const char *numnames[], *numcodes[], *numfnames[]
const char *strnames[], *strcodes[], *strfnames[]
- 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 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.
- X/Open defines no error conditions. In this implementa-
- tion
+ X/Open defines no error conditions. In this implementation
del_curterm
- returns an error if its terminal parameter is
- null.
+ returns an error if its terminal parameter is null.
putp calls tputs, returning the same error-codes.
restartterm
- returns an error if the associated call to se-
- tupterm returns an error.
+ returns an error if the associated call to setupterm returns an
+ error.
setupterm
- returns an error if it cannot allocate enough mem-
- ory, or create the initial windows (stdscr,
- curscr, newscr). Other error conditions are docu-
- mented above.
+ returns an error if it cannot allocate enough memory, or create
+ the initial windows (stdscr, curscr, newscr). Other error con-
+ ditions are documented above.
tputs
- returns an error if the string parameter is null.
- It does not detect I/O errors: X/Open states that
- tputs ignores the return value of the output func-
- tion putc.
+ returns an error if the string parameter is null. It does not
+ detect I/O errors: X/Open states that tputs ignores the return
+ value of the output function putc.
@@ -399,120 +365,106 @@
X/Open notes that vidattr and vidputs may be macros.
- The function setterm is not described by X/Open and must
- be considered non-portable. All other functions are as
- described by X/Open.
+ The function setterm is not described by X/Open and must be considered
+ non-portable. All other functions are as described by X/Open.
- setupterm copies the terminal name to the array ttytype.
- This is not part of X/Open Curses, but is assumed by some
- applications.
+ setupterm copies the terminal name to the array ttytype. This is not
+ part of X/Open Curses, but is assumed by some applications.
- Other implementions may not declare the capability name
- arrays. Some provide them without declaring them. X/Open
- does not specify them.
+ Other implementions may not declare the capability name arrays. Some
+ provide them without declaring them. X/Open does not specify them.
- Extended terminal capability names, e.g., as defined by
- tic -x, are not stored in the arrays described here.
+ Extended terminal capability names, e.g., as defined by tic -x, are not
+ stored in the arrays described here.
- Older versions of ncurses assumed that the file descriptor
- passed to setupterm from initscr or newterm uses buffered
- I/O, and would write to the corresponding stream. In ad-
- dition to the limitation that the terminal was left in
- block-buffered mode on exit (like System V curses), it was
- problematic because ncurses did not allow a reliable way
- to cleanup on receiving SIGTSTP.
-
- The current version (ncurses6) uses output buffers managed
- directly by ncurses. Some of the low-level functions de-
- scribed in this manual page write to the standard output.
- They are not signal-safe. The high-level functions in
- ncurses use alternate versions of these functions using
+ Older versions of ncurses assumed that the file descriptor passed to
+ setupterm from initscr or newterm uses buffered I/O, and would write to
+ the corresponding stream. In addition to the limitation that the ter-
+ minal was left in block-buffered mode on exit (like System V curses),
+ it was problematic because ncurses did not allow a reliable way to
+ cleanup on receiving SIGTSTP.
+
+ The current version (ncurses6) uses output buffers managed directly by
+ ncurses. Some of the low-level functions described in this manual page
+ write to the standard output. They are not signal-safe. The high-lev-
+ el functions in ncurses use alternate versions of these functions using
the more reliable buffering scheme.
- The X/Open Curses prototypes are based on the SVr4 curses
- header declarations, which were defined at the same time
- the C language was first standardized in the late 1980s.
+ The X/Open Curses prototypes are based on the SVr4 curses header decla-
+ rations, which were defined at the same time the C language was first
+ standardized in the late 1980s.
- o X/Open Curses uses const less effectively than a later
- design might, in some cases applying it needlessly to
- values are already constant, and in most cases over-
- looking parameters which normally would use const.
- Using constant parameters for functions which do not
- use const may prevent the program from compiling. On
- the other hand, writable strings are an obsolescent
- feature.
+ o X/Open Curses uses const less effectively than a later design
+ might, in some cases applying it needlessly to values are already
+ constant, and in most cases overlooking parameters which normally
+ would use const. Using constant parameters for functions which do
+ not use const may prevent the program from compiling. On the other
+ hand, writable strings are an obsolescent feature.
- As an extension, this implementation can be configured
- to change the function prototypes to use the const
- keyword. The ncurses ABI 6 enables this feature by
- default.
+ As an extension, this implementation can be configured to change
+ the function prototypes to use the const keyword. The ncurses ABI
+ 6 enables this feature by default.
- o X/Open Curses prototypes tparm with a fixed number of
- parameters, rather than a variable argument list.
+ o X/Open Curses prototypes tparm with a fixed number of parameters,
+ rather than a variable argument list.
- This implementation uses a variable argument list, but
- can be configured to use the fixed-parameter list.
- Portable applications should provide 9 parameters af-
- ter the format; zeroes are fine for this purpose.
+ This implementation uses a variable argument list, but can be con-
+ figured to use the fixed-parameter list. Portable applications
+ should provide 9 parameters after the format; zeroes are fine for
+ this purpose.
- In response to review comments by Thomas E. Dickey,
- X/Open Curses Issue 7 proposed the tiparm function in
- mid-2009.
+ In response to review comments by Thomas E. Dickey, X/Open Curses
+ Issue 7 proposed the tiparm function in mid-2009.
- If configured to use the terminal-driver, e.g., for the
- MinGW port,
+ If configured to use the terminal-driver, e.g., for the MinGW port,
- o setupterm interprets a missing/empty TERM variable as
- the special value "unknown".
+ o setupterm interprets a missing/empty TERM variable as the special
+ value "unknown".
- o setupterm allows explicit use of the the windows con-
- sole driver by checking if $TERM is set to "#win32con"
- or an abbreviation of that string.
+ o setupterm allows explicit use of the the windows console driver by
+ checking if $TERM is set to "#win32con" or an abbreviation of that
+ string.
- In System V Release 4, set_curterm has an int return type
- and returns OK or ERR. We have chosen to implement the
- X/Open Curses semantics.
+ In System V Release 4, set_curterm has an int return type and returns
+ OK or ERR. We have chosen to implement the X/Open Curses semantics.
- In System V Release 4, the third argument of tputs has the
- type int (*putc)(char).
+ In System V Release 4, the third argument of tputs has the type int
+ (*putc)(char).
- At least one implementation of X/Open Curses (Solaris) re-
- turns a value other than OK/ERR from tputs. That returns
- the length of the string, and does no error-checking.
+ At least one implementation of X/Open Curses (Solaris) returns a value
+ other than OK/ERR from tputs. That returns the length of the string,
+ and does no error-checking.
- X/Open notes that after calling mvcur, the curses state
- may not match the actual terminal state, and that an ap-
- plication should touch and refresh the window before re-
- suming normal curses calls. Both ncurses and System V Re-
- lease 4 curses implement mvcur using the SCREEN data allo-
- cated in either initscr or newterm. So though it is docu-
- mented as a terminfo function, mvcur is really a curses
- function which is not well specified.
+ X/Open notes that after calling mvcur, the curses state may not match
+ the actual terminal state, and that an application should touch and re-
+ fresh the window before resuming normal curses calls. Both ncurses and
+ System V Release 4 curses implement mvcur using the SCREEN data allo-
+ cated 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.
- X/Open states that the old location must be given for
- mvcur. This implementation allows the caller to use -1's
- for the old ordinates. In that case, the old location is
- unknown.
+ X/Open states that the old location must be given for mvcur. This im-
+ plementation allows the caller to use -1's for the old ordinates. In
+ that case, the old location is unknown.
- curses(3x), curs_initscr(3x), curs_kernel(3x), curs_term-
- cap(3x), curs_variables(3x), term_variables(3x), putc(3),
- terminfo(5)
+ curses(3x), curs_initscr(3x), curs_kernel(3x), curs_termcap(3x),
+ curs_variables(3x), term_variables(3x), putc(3), terminfo(5)
- curs_terminfo(3x)
+ curs_terminfo(3x)