top_panel(3) - NetBSD Manual Pages

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PANEL_ABOVE(3)          NetBSD Library Functions Manual         PANEL_ABOVE(3)


NAME

     top_panel, bottom_panel, panel_above, panel_below -- z-order of panels


LIBRARY

     Z-order for curses windows (libpanel, -lpanel)


SYNOPSIS

     #include <panel.h>

     int
     top_panel(PANEL *p);

     int
     bottom_panel(PANEL *p);

     PANEL *
     panel_above(PANEL *p);

     PANEL *
     panel_below(PANEL *p);


DESCRIPTION

     Newly created panels are placed at the top of the deck.  The z-order of a
     visible panel can be changed with the functions top_panel() and
     bottom_panel() that move it to the top and bottom of the deck respec-
     tively.

     For a visible panel its neighbors in the deck can be obtained with
     panel_above() and panel_below().  The bottom and top panels can be
     obtained by passing a NULL argument to panel_above() and panel_below(),
     respectively.


IMPLEMENTATION NOTES

     The top_panel() function will return an error if the panel is currently
     hidden.  Use show_panel(3) to make a hidden panel visible again and put
     it at the top of the deck.  This is the behaviour specified by the origi-
     nal AT&T System V UNIX panel library.

     In the ncurses implementation of the panel library show_panel() and
     top_panel() are identical and handle both visible and hidden panels.
     This may be a source of bugs in programs tested only against ncurses.


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

     panel(3)

NetBSD 10.0_STABLE             October 28, 2015             NetBSD 10.0_STABLE