1  typedef unsigned char UCHAR, *PUCHAR;
       2  typedef void *HANDLE;
       3  typedef struct _NCB {
       4      UCHAR ncb_reserve[10];
       5  } NCB, *PNCB;
       6  struct NBCmdQueue {
       7      PNCB head;
       8  };
       9  PNCB *NBCmdQueueFindNBC(struct NBCmdQueue *queue, PNCB ncb)
      10  {
      11    PNCB *ret = &queue->head;
      12    while (ret && *ret != ncb)
      13      ret = (PNCB *)((*ret)->ncb_reserve + sizeof(HANDLE));
      14  }
      15