menu_is_open

	menu_is_open()

	This routine determines whether there is a presently open menu.

	The present list of routines affected by this call is:

			scroll_menu(_c)
			scroll_menu_hs_c
			combo_menu_c
			combo_menu_hs_c

	This function returns status values as follows:

	TRUE			a menu is open
	FALSE			no menu is presently open

	This function requires the following include files:

	cbslib_h

	Related functions:

	scroll_menu(_c), scroll_menu_hs_c, combo_menu_c, combo_menu_hs_c,
	menu_setup_c

	C/C++ usage:

	int	status;

	status = menu_is_open();