NAME¶
deleteln,
wdeleteln,
insdelln,
winsdelln,
insertln,
winsertln - delete and insert lines in a
curses
window
SYNOPSIS¶
#include <curses.h>
int deleteln(void);
int wdeleteln(WINDOW *win);
int insdelln(int n);
int winsdelln(WINDOW *win, int n);
int insertln(void);
int winsertln(WINDOW *win);
DESCRIPTION¶
The
deleteln and
wdeleteln routines delete the line under the
cursor in the window; all lines below the current line are moved up one line.
The bottom line of the window is cleared. The cursor position does not change.
The
insdelln and
winsdelln routines, for positive
n, insert
n lines into the specified window above the current line. The
n
bottom lines are lost. For negative
n, delete
n lines (starting
with the one under the cursor), and move the remaining lines up. The bottom
n lines are cleared. The current cursor position remains the same.
The
insertln and
winsertln routines insert a blank line above the
current line and the bottom line is lost.
RETURN VALUE¶
All routines return the integer
ERR upon failure and an
OK (SVr4
specifies only "an integer value other than
ERR") upon
successful completion.
X/Open defines no error conditions. In this implementation, if the window
parameter is null, an error is returned.
PORTABILITY¶
These functions are described in the XSI Curses standard, Issue 4. The standard
specifies that they return
ERR on failure, but specifies no error
conditions.
NOTES¶
Note that all but
winsdelln may be macros.
These routines do not require a hardware line delete or insert feature in the
terminal. In fact, they will not use hardware line delete/insert unless
idlok(..., TRUE) has been set on the current window.
SEE ALSO¶
ncurses(3NCURSES)
