NAME
ungetch, unget_wch — push a character onto the input queue
SYNOPSIS
#include <curses.h>
int ungetch(int ch);
int unget_wch(const wchar_t wch);
DESCRIPTION
The
ungetch()
function pushes the single-byte character ch onto the head of the input
queue.
The
unget_wch()
function pushes the wide character wch onto the head of the input queue.
One character of push-back is guaranteed. If these functions are called too
many times without an intervening call to
getch()
or
get_wch(),
the operation may fail.
RETURN VALUE
Upon successful completion, these functions return OK.
Otherwise, they return ERR.
ERRORS
No errors are defined.
CHANGE HISTORY
First released in X/Open Curses, Issue 4.
Printable version
