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)