- inch, winch, mvinch, mvwinch - get a character and attributes from a
- curses window
+ inch, winch, mvinch, mvwinch - get a curses character from a window
- These routines return the character, of type chtype, at the current
- position in the named window. If any attributes are set for that
- position, their values are OR'ed into the value returned. Constants
- defined in <curses.h> can be used with the & (logical AND) operator to
+ These routines return the character, of type chtype, at the current
+ position in the named window. If any attributes are set for that
+ position, their values are OR'ed into the value returned. Constants
+ defined in <curses.h> can be used with the & (logical AND) operator to
extract the character or attributes alone.
- The following bit-masks may be AND-ed with characters returned by
+ The following bit-masks may be AND-ed with characters returned by
winch.
A_CHARTEXT Bit-mask to extract character
@@ -80,12 +79,12 @@
- Functions with a "mv" prefix first perform a cursor movement using
+ Functions with a "mv" prefix first perform a cursor movement using
wmove, and return an error if the position is outside the window, or if
the window pointer is null.
- The winch function does not return an error if the window contains
- characters larger than 8-bits (255). Only the low-order 8 bits of the
+ The winch function does not return an error if the window contains
+ characters larger than 8-bits (255). Only the low-order 8 bits of the
character are used by winch.
@@ -96,44 +95,45 @@
These functions are described in the XSI Curses standard, Issue 4.
- Very old systems (before standardization) provide a different function
+ Very old systems (before standardization) provide a different function
with the same name:
- o The winch function was part of the original BSD curses library,
- which stored a 7-bit character combined with the standout
+ o The winch function was part of the original BSD curses library,
+ which stored a 7-bit character combined with the standout
attribute.
- In BSD curses, winch returned only the character (as an integer)
+ In BSD curses, winch returned only the character (as an integer)
with the standout attribute removed.
- o System V curses added support for several video attributes which
+ o System V curses added support for several video attributes which
could be combined with characters in the window.
Reflecting this improvement, the function was altered to return the
character combined with all video attributes in a chtype value.
X/Open Curses does not specify the size and layout of attributes, color
- and character values in chtype; it is implementation-dependent. This
- implementation uses 8 bits for character values. An application using
- more bits, e.g., a Unicode value, should use the wide-character
+ and character values in chtype; it is implementation-dependent. This
+ implementation uses 8 bits for character values. An application using
+ more bits, e.g., a Unicode value, should use the wide-character
equivalents to these functions.
curses(3x)
- gives an overview of the WINDOW and chtype data types.
+ gives an overview of the WINDOW and chtype data types.
curs_attr(3x)
- goes into more detail, pointing out portability problems and
- constraints on the use of chtype for returning window information.
+ goes into more detail, pointing out portability problems and
+ constraints on the use of chtype for returning window
+ information.
curs_in_wch(3x)
- describes comparable functions for the wide-character (ncursesw)
- library.
+ describes comparable functions for the wide-character (ncursesw)
+ library.
- curs_inch(3x)
+ncurses 6.4 2023-10-07 curs_inch(3x)