curs_slk(S)

curs_slk: slk_init, slk_set, slk_refresh, slk_noutrefresh, slk_label, slk_clear, slk_restore, slk_touch, slk_attron, slk_attrset, slk_attroff -- curses soft label routines

Syntax

cc ... -lcurses

#include <curses.h>

int slk_init(int fmt);
int slk_set(int labnum, char *label, int fmt);
int slk_refresh(void);
int slk_noutrefresh(void);
char *slk_label(int labnum);
int slk_clear(void);
int slk_restore(void);
int slk_touch(void);
int slk_attron(chtype attrs);
int slk_attrset(chtype attrs);
int slk_attroff(chtype attrs);

Description

curses(S) manipulates the set of soft function-key labels that exist on many terminals. For those terminals that do not have soft labels, curses( ) takes over the bottom line of stdscr, reducing the size of stdscr; and the variable LINES. curses( ) standardizes on eight labels of up to eight characters each.

To use soft labels, the slk_init(S) routine must be called before initscr(S) or newterm(S) is called. If initscr( ) eventually uses a line from stdscr to emulate the soft labels, then fmt determines how the labels are arranged on the screen. Setting fmt to 0 indicates a 3-2-3 arrangement of the labels; 1 indicates a 4-4 arrangement.

With the slk_set(S) routine, labnum is the label number, from 1 to 8. label is the string to be put on the label, up to eight characters in length. A null string or a null pointer sets up a blank label. fmt is either 0, 1, or 2, indicating whether the label is to be left-justified, centered, or right-justified, respectively, within the label.

The slk_refresh(S) and slk_noutrefresh(S) routines correspond to the wrefresh(S) and wnoutrefresh(S) routines. That is, slk_noutrefresh( ) copies the labels to a virtual screen; and slk_refresh( ) compares that to the physical screen and updates the physical screen if necessary.

The slk_label(S) routine returns the current label for label number labnum, with leading and trailing blanks stripped.

The slk_clear(S) routine clears the soft labels from the screen.

The slk_restore(S) routine restores the soft labels to the screen after a slk_clear( ).

With the slk_touch(S) routine, all the soft labels are forced to be output the next time a slk_noutrefresh( ) is done.

The slk_attron(S), slk_attrset(S) and slk_attroff(S) routines correspond to attron(S), attrset(S), and attroff(S). They have an effect only if soft labels are simulated on the bottom line of the screen.

Return values

Routines that return an integer return ERR on failure and an integer value other than ERR on successful completion.

slk_label( ) returns NULL on error.

Warning

The header file curses.h automatically includes the header files stdio.h and unctrl.h.

Most applications use slk_noutrefresh( ) because a wrefresh( ) is likely to follow soon.

Files

/usr/lib/libcurses.a: the library

Standards conformance

slk_init(S), slk_set(S), slk_refresh(S), slk_noutrefresh(S), slk_label(S), slk_clear(S), slk_restore(S), slk_attron(S), slk_attroff(S), slk_attrset(S), and slk_touch(S) are not part of any currently supported standard; they were developed by UNIX System Laboratories, Inc. and are maintained by The SCO Group.