CURSES_LINE(3)

CURSES_LINE(3) | Library Functions Manual | CURSES_LINE(3)

# NAME

`curses_line`, `hline`, `whline`, `vline`, `wvline`, `mvhline`, `mvwhline`, `mvvline`, `mvwvline` —
curses draw lines on windows routines

# LIBRARY

Curses Library (libcurses, -lcurses)

# SYNOPSIS

`#include <curses.h>`

int
`hline`(chtype ch, int n);

int
`whline`(WINDOW *win, chtype ch, int n);

int
`mvhline`(int y, int x, chtype ch, int n);

int
`mvwvline`(WINDOW *win, int y, int x, chtype c, int n);

int
`vline`(chtype c, int n);

int
`wvline`(WINDOW *win, chtype c, int n);

int
`mvvline`(int y, int x, chtype ch, int n);

int
`mvwhline`(WINDOW *win, int y, int x, chtype c, int n);

# DESCRIPTION

These functions draw lines on `stdscr` or on the specified window.

The `hline`() function draws a horizontal line of the character ch on `stdscr` starting at the current cursor position and extending for n characters, or until the right hand side of `stdscr` is reached. If the text portion of ch is 0 then the line will be drawn with the `ACS_HLINE` character.

The `whline`() function is the same as the `hline`() function, excepting that the line is drawn in the window specified by win.

The `vline`() function draws a vertical line of character ch on `stdscr` starting at the current cursor position and moving down until either n characters have been drawn or the bottom of `stdscr` is reached. If the text portion of ch is 0 then the line will be drawn with the `ACS_VLINE` character.

The `wvline`() function is the same as the `vline`() function, excepting that the line is drawn on the given window.

The `mvhline`(), `mvwhline`(), `mvvline`() and `mvwvline`() functions are the same as the `hline`(), `whline`(), `vline`() and `wvline`() functions, respectively, excepting that `wmove`() is called to move the cursor to the position specified by y, x before the line is drawn on the window.

# RETURN VALUES

Functions returning pointers will return `NULL` if an error is detected. The functions that return an int will return one of the following values:

`OK`
  The function completed successfully.
`ERR`
  An error occurred in the function.

# SEE ALSO

curses_border(3)

# STANDARDS

The NetBSD Curses library complies with the X/Open Curses specification, part of the Single Unix Specification.

The use of `ACS_HLINE` and `ACS_VLINE` as default drawing character in `hline`() and `vline`() is a NetBSD extension which should not be relied on in portable code.

# HISTORY

The Curses package appeared in 4.0BSD.

February 19, 2010 | NetBSD 9.4