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menu_sub(3)

NAME

       menu_win - make and break menu window and subwindow associations

SYNOPSIS

       #include <menu.h>
       int set_menu_win(MENU *menu, WINDOW *win);
       WINDOW *menu_win(const MENU *menu);
       int set_menu_sub(MENU *menu, WINDOW *sub);
       WINDOW *menu_sub(const MENU *menu);
       int scale_menu(const MENU *menu, int *rows, int *columns);

DESCRIPTION

       Every  menu  has an associated pair of curses windows.  The menu window
       displays any title and border associated with the window; the menu sub-
       window  displays the items of the menu that are currently available for
       selection.

       The first four functions get and set those windows.  It is  not	neces-
       sary  to set either window; by default, the driver code uses stdscr for
       both.

       In the set_ functions, window argument of NULL is treated as though  it
       were stsdcr.  A menu argument of NULL is treated as a request to change
       the system default menu window or subwindow.

       The function scale_menu returns the minimum size required for the  sub-
       window of menu.

RETURN VALUE

       Routines  that  return  pointers  return  NULL on error.  Routines that
       return an integer return one of the following error codes:

       E_OK The routine succeeded.

       E_SYSTEM_ERROR
	    System error occurred (see errno).

       E_BAD_ARGUMENT
	    Routine detected an incorrect or out-of-range argument.

       E_POSTED
	    The menu has already been posted.

       E_NOT_CONNECTED
	    No items are connected to the menu.

SEE ALSO

       curses(3X), menu(3X).

NOTES

       The  header  file  <menu.h>  automatically  includes  the  header  file
       <curses.h>.

PORTABILITY

       These  routines	emulate the System V menu library.  They were not sup-
								  menu_win(3X)

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