panel_hidden(3) - NetBSD Manual Pages

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PANEL_HIDDEN(3)         NetBSD Library Functions Manual        PANEL_HIDDEN(3)


NAME

     hide_panel, show_panel, panel_hidden -- visibility of panels


LIBRARY

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


SYNOPSIS

     #include <panel.h>

     int
     hide_panel(PANEL *p);

     int
     show_panel(PANEL *p);

     int
     panel_hidden(PANEL *p);


DESCRIPTION

     Panels are initially created visible.  The function hide_panel() can be
     used to hide a panel.  The panel is removed from the deck.

     A panel can be made visible again with a call to show_panel().  The panel
     is returned to the top of the deck.

     The current visibility status of a panel can be queried with
     panel_hidden().


IMPLEMENTATION NOTES

     The show_panel() function will return an error if the panel is already
     visible.  Use top_panel(3) to change z-order of an already visible panel.
     This is the behaviour specified by the original 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

     The panel_hidden() function returns TRUE or FALSE.  It will return ERR if
     passed a null pointer.

     Other functions will return one of the following values:

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


SEE ALSO

     panel(3)

NetBSD 8.2                     October 28, 2015                     NetBSD 8.2