# curs_deleteln 3x

    curs_deleteln(3x)                                            curs_deleteln(3x)

## 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 cur-
           rent line and the bottom line is lost.

## RETURN VALUE

           All routines return the integer ERR upon failure and an OK (SVr4 speci-
           fies  only  "an  integer value other than ERR") upon successful comple-
           tion.

           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 win-
           dow.

## SEE ALSO

           curses(3x)

                                                                 curs_deleteln(3x)