curs_deleteln(3x) — Linux manual page

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | PORTABILITY | NOTES | SEE ALSO | COLOPHON

curs_deleteln(3X)                                      curs_deleteln(3X)

NAME         top

       deleteln, wdeleteln, insdelln, winsdelln, insertln, winsertln -
       delete and insert lines in a curses window

SYNOPSIS         top

       #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         top

       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         top

       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         top

       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         top

       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         top

       curses(3X)

COLOPHON         top

       This page is part of the ncurses (new curses) project.
       Information about the project can be found at 
       ⟨https://www.gnu.org/software/ncurses/ncurses.html⟩.  If you have
       a bug report for this manual page, send it to
       bug-ncurses-request@gnu.org.  This page was obtained from the
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       ⟨git://ncurses.scripts.mit.edu/ncurses.git⟩ on 2021-08-27.  (At
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                                                       curs_deleteln(3X)