curs_deleteln(3) Library calls curs_deleteln(3)
NAME
deleteln, wdeleteln, insdelln, winsdelln, insertln, winsertln - delete
or 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
These 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.
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.
PORTABILITY
These functions are described in X/Open Curses, Issue 4. The standard
specifies that they return ERR on failure, but specifies no error
conditions.
SEE ALSO
curses(3X)
ncurses 6.5 2024-04-20 curs_deleteln(3)
ncurses 6.5 - Generated Sat May 4 09:06:12 CDT 2024