    deferred class
    	EV_SINGLE_CHILD_CONTAINER_IMP

    Ancestors
    	EV_CONTAINER_IMP*

    Descendants
    	EV_CELL_IMP
    	EV_FRAME_IMP
    	EV_WINDOW_IMP

    Clients
    	EV_FRAME_IMP
    	EV_SINGLE_CHILD_CONTAINER_IMP*
    	EV_WINDOW_IMP

    Suppliers
    	ACTION_SEQUENCE [EVENT_DATA -> TUPLE create default_create end]
    	BOOLEAN
    	EV_CONTAINER*
    	EV_CONTAINER_IMP*
    	EV_NEW_ITEM_ACTION_SEQUENCE
    	EV_SINGLE_CHILD_CONTAINER_IMP*
    	EV_WIDGET*
    	EV_WIDGET_I*
    	EV_WIDGET_IMP*
    	INTEGER_32
    	WEL_WINDOW_CONSTANTS