Description |
 |
The typeahead() routine specifies the file descriptor
(fd) to use to check for type-ahead characters (characters typed by the user but not yet processed by
CURSES).
CURSES checks for type-ahead characters periodically
while updating the screen. If characters are found,
the current update is postponed until the next
wrefresh() or doupdate(). This speeds up response to commands that have been typed ahead. Normally, the
input FILE passed to newterm(), or stdin in the case of
initscr(), is used for type-ahead checking.
If fd is -1, no type-ahead checking is done.
