vidattr(3XCURSES) X/Open Curses Library Functions vidattr(3XCURSES)NAME
vidattr, vid_attr, vidputs, vid_puts - output attributes to the termi‐
nal
SYNOPSIS
cc [ flag... ] file... -I /usr/xpg4/include -L /usr/xpg4/lib \
-R /usr/xpg4/lib -lcurses [ library... ]
c89 [ flag... ] file... -lcurses [ library... ]
#include <curses.h>
int vidattr(chtype attr);
int vid_attr(attr_t attr, short color_pair_number, void *opt);
int vidputs(chtype attr, int (*putfunc) (int));
int vid_puts(attr_t attr, short color_pair_number, void *opt, int
(*putfunc) (int));
PARAMETERS
attr Is the rendition of the foreground window.
color_pair_number Is a color pair.
opt Is reserved for future use. Currently, this
must be a null pointer.
putfunc Is a user-supplied output function.
DESCRIPTION
These functions output commands to the terminal that change the termi‐
nal's attributes.
If the terminfo database indicates that the terminal in use can display
characters in the rendition specified by attr, then vidattr() outputs
one or more commands to request that the terminal display subsequent
characters in that rendition. The function outputs by calling
putchar(3C). The vidattr() function neither relies on your updates the
model which Curses maintains of the prior rendition mode.
The vidputs() function computes the terminal output string that
vidattr() does, based on attr, but vidputs() outputs by calling the
user-supplied function putfunc. The vid_attr() and vid_puts() functions
correspond to vidattr() and vidputs() respectively, but take a set of
arguments, one of type attr_t for the attributes, one of type short for
the color pair number, and a void *, and thus support the attribute
constants with the WA_ prefix.
The opts argument is reserved for definition in a future release. Cur‐
rently, it is implemented as a null pointer.
The user-supplied function putfunc (which can be specified as an argu‐
ment to either vidputs() or vid_puts()) is either putchar() or some
other function with the same prototype. Both the vidputs() and
vid_puts() functions ignore the return value of putfunc.
RETURN VALUES
Upon successful completion, these functions return OK. Otherwise, they
return ERR.
ERRORS
No errors are defined.
USAGE
After use of any of these functions, the model Curses maintains of the
state of the terminal might not match the actual state of the terminal.
The application should touch and refresh the window before resuming
conventional use of Curses.
Of these functions requires that the application contain so much infor‐
mation about a particular class of terminal that it defeats the purpose
of using Curses.
On some terminals, a command to change rendition conceptually occupies
space in the screen buffer (with or without width). Thus, a command to
set the terminal to a new rendition would change the rendition of some
characters already displayed.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Interface Stability │Standard │
├─────────────────────────────┼─────────────────────────────┤
│MT-Level │Unsafe │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOdoupdate(3XCURSES), is_linetouched(3XCURSES), libcurses(3XCURSES),
putchar(3C), tigetflag(3XCURSES), attributes(5), standards(5)SunOS 5.10 5 Jun 2002 vidattr(3XCURSES)
