1curs_deleteln(3X)                                            curs_deleteln(3X)
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NAME

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

10       #include <curses.h>
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12       int deleteln(void);
13       int wdeleteln(WINDOW *win);
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15       int insdelln(int n);
16       int winsdelln(WINDOW *win, int n);
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18       int insertln(void);
19       int winsertln(WINDOW *win);
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DESCRIPTION

22       The deleteln and wdeleteln routines delete the line under the cursor in
23       the  window;  all  lines  below the current line are moved up one line.
24       The bottom line of the window is cleared.  The cursor position does not
25       change.
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27       The  insdelln  and  winsdelln  routines, for positive n, insert n lines
28       into the specified window above the current line.  The n  bottom  lines
29       are  lost.  For negative n, delete n lines (starting with the one under
30       the cursor), and move the remaining lines up.  The bottom n  lines  are
31       cleared.  The current cursor position remains the same.
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33       The  insertln and winsertln routines insert a blank line above the cur‐
34       rent line and the bottom line is lost.
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RETURN VALUE

37       All routines return the integer ERR upon failure and an OK (SVr4 speci‐
38       fies  only  "an  integer value other than ERR") upon successful comple‐
39       tion.
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41       X/Open defines no error conditions.  In  this  implementation,  if  the
42       window parameter is null, an error is returned.
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PORTABILITY

45       These functions are described in the XSI Curses standard, Issue 4.  The
46       standard specifies that they return ERR on failure,  but  specifies  no
47       error conditions.
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NOTES

50       Note that all but winsdelln may be macros.
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52       These  routines do not require a hardware line delete or insert feature
53       in the terminal.  In fact, they will not use hardware  line  delete/in‐
54       sert unless idlok(..., TRUE) has been set on the current window.
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SEE ALSO

57       curses(3X)
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61                                                             curs_deleteln(3X)
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