NAME
    NextObject -- iterate through the object on an Exec list. (V36)

SYNOPSIS
    object = NextObject( objectPtrPtr )
    D0                   A0

    APTR NextObject( APTR );

FUNCTION
    This function is for boopsi class implementors only.

    When you collect a set of boopsi objects on an Exec list
    structure by invoking their OM_ADDMEMBER method, you
    can (only) retrieve them by iterations of this function.

    Works even if you remove and dispose the returned list
    members in turn.

INPUTS
    Initially, you set a pointer variable to equal the
    lh_Head field of the list (or mlh_Head field of a MinList).
    You pass the *address* of that pointer repeatedly
    to NextObject() until it returns NULL.

EXAMPLE

    /* here is the OM_DISPOSE case of some class's dispatcher */
    case OM_DISPOSE:
        /* dispose members  */
        object_state = mydata->md_CollectionList.lh_Head;
        while ( member_object = NextObject( &object_state ) )
        {
            DoMethod( member_object, OM_REMOVE ); /* remove from list */
            DM( member, msg );      /* and pass along dispose       */
        }

RESULT
    Returns pointers to each object in the list in turn, and NULL
    when there are no more.

NOTES

BUGS

SEE ALSO
    disposeobject(), setattrs(), getattr(), makeclass(),
    Document "Basic Object-Oriented Programming System for Intuition"
    and the "boopsi Class Reference" document.