typeahead(3XCURSES) X/Open Curses Library Functions typeahead(3XCURSES)
NAME
typeahead - 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 characters.
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. Nor-
mally, 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 ALSO
doupdate(3XCURSES), getch(3XCURSES), initscr(3XCURSES), libcurses(3XCURSES), attributes(5), standards(5)
SunOS 5.10 5 Jun 2002 typeahead(3XCURSES)