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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
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