def __init__(self):
        vstruct.VStruct.__init__(self)
        self.BackendCtx = v_ptr32()
        self.Callbacks = HEAP_LFH_CALLBACKS()
        self.Buckets = vstruct.VArray([ HEAP_LFH_BUCKET() for i in xrange(129) ])
        self.AffinitySlots = vstruct.VArray([ HEAP_LFH_AFFINITY_SLOT() for i in xrange(129) ])