TYPEAHEAD(3XCURSES)TYPEAHEAD(3XCURSES)NAMEtypeahead - check for type-ahead characters
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 typeahead(int fd);
PARAMETERS
fd
Is the file descriptor that is used to check for type-ahead char‐
acters.
DESCRIPTION
The typeahead() function specifies the file descriptor (fd) to use to
check for type-ahead characters (characters typed by the user but not
yet processed by X/Open Curses).
X/Open Curses checks for type-ahead characters periodically while
updating the screen. If characters are found, the current update is
postponed until the next refresh(3XCURSES) or doupdate(3XCURSES). This
speeds up response to commands that have been typed ahead. Normally,
the input file pointer passed to newterm(3XCURSES), or stdin in the
case of initscr(3XCURSES), is used for type-ahead checking.
If fd is -1, no type-ahead checking is done.
RETURN VALUES
On success, the typeahead() function returns OK. Otherwise, it returns
ERR.
ERRORS
None.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌────────────────────┬─────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├────────────────────┼─────────────────┤
│Interface Stability │ Standard │
├────────────────────┼─────────────────┤
│MT-Level │ Unsafe │
└────────────────────┴─────────────────┘
SEE ALSOdoupdate(3XCURSES), getch(3XCURSES), initscr(3XCURSES),
libcurses(3XCURSES), attributes(5), standards(5)
Jun 5, 2002 TYPEAHEAD(3XCURSES)
