Checking an item's visibility

A menu item is visible if it appears in the subwindow of the posted menu to which it is connected. (Connecting and posting menus is described below.) Function item_visible enables your application program to determine if an item is visible.

SYNOPSIS

   int item_visible (item)
   ITEM  item;

To check if the first menu item is currently visible on the display, you can write

   int at_top (m) /* check visibility of first menu item */
   MENU * m;
   {
   	ITEM ** i = menu_items (m);
   	ITEM * firstitem = i[0];
   

   	return item_visible (firstitem);
   }