Items

An EiffelVision 2 "item" is an object that is used to display information inside certain primitives. For example, EV_LIST may hold items of type EV_LIST_ITEM. All EiffelVision 2 items are descendants of EV_ITEM, which in turn is a descendant of EV_PIXMAPABLE, which means that an item can display a EV_PIXMAP object.

Item Holders

Below is a structure showing some of the EiffelVision 2 item-containing components and the items that they accept:

• EV_LIST accepts items of type:
  • EV_LIST_ITEM

• EV_COMBO_BOX accepts items of type:
  • EV_LIST_ITEM

• EV_WINDOW accepts items of type (use set_menu_bar):
  • EV_MENU_BAR accepts items of type:
    • EV_MENU accepts items of type:
      • EV_MENU
      • EV_MENU_ITEM
      • EV_MENU_SEPARATOR
      • EV_RADIO_MENU_ITEM
      • EV_CHECK_MENU_ITEM

• EV_MULTI_COLUMN_LIST accepts items of type:
  • EV_MULTI_COLUMN_LIST_ROW

• EV_TOOL_BAR accepts items of type:
  • EV_TOOL_BAR_BUTTON
  • EV_TOOL_BAR_RADIO_BUTTON
  • EV_TOOL_BAR_SEPARATOR
  • EV_TOOL_BAR_TOGGLE_BUTTON

• EV_TREE accepts items of type:
  • EV_DYNAMIC_TREE_ITEM accepts items of type:
    • EV_DYNAMIC_TREE_ITEM
    • EV_TREE_ITEM
  • EV_TREE_ITEM accepts items of type:
    • EV_DYNAMIC_TREE_ITEM
    • EV_TREE_ITEM