代码声明如下：

 #ifdef _WIN64
typedef unsigned __int64    MEAS_ID;
#else
typedef unsigned long   MEAS_ID;
#endif

//类
class className
{};

//单向链表
struct ListLink{
    MEAS_ID AddressVale;
    className* pClass;
    ListLink* pNext;
};
function: MEAS_ID createclass(){
    MEAS_ID retval;
    className* pClass = new className();
    retval = reinterpret_cast<MEAS_ID>(pClass);

    //将对象增加到链表内
    ListLink* pLink = new ListLink;
    pLink->AddressVale = retval;
    pLink->pClass = pClass;
    pLink->pNext = NULL;
    pLinkList->CreateLink(pLink);
    return retval;
}

function: // 删除链表内对象
int DeleteLink(MEAS_ID &iNo){
    ListLink* pPre = m_pMeasHead;
    ListLink* pCur = pPre->pNext;
    int retval = -1;
    while(pCur){
        if(pCur->AddressVale==iNo){
            pPre->pNext = pCur->pNext;
            if(pPre->pNext == NULL) m_pMeasTail = pPre;
            delete pCur->pMeas;
            pCur->pMeas = NULL;
            delete pCur;
            retval = 0;
            iNo = 0;

            break;
        }
        pPre = pCur;
        pCur = pPre->pNext;
    }

return retval;
}

问题出现在从链表中删除对象，如果 MEAS_ID 为 unsigned --int64 的话 while 循环内 pCur->AddressVale==iNo 判断结果为 FALSE，而如果 MEAS_ID 为 unsigned long 的话，其判断结果为 TRUE，请问是什么问题？