有模板高手帮忙解决个问题！

[zzybird]

我想在模板类中使用另一模板类型声明的结构体，可编译不通过，
哪位大侠有解决办法？代码如下

#include "stdafx.h"
#include <Windows.h>
#include <set>
using namespace std;

template<class eType>
struct ZElement
{
eType* Element;
ZElement* Next;
ZElement* Prev;
};

template<class ElementType>
class ZList
{
public:
ZList(void);
virtual ~ZList(void);
ElementType* ZNew();
private:
DWORD m_dwListMaxCount;
DWORD m_dwListNowCount;

ZElement<ElementType>* m_pListHead;
ZElement<ElementType>* m_pListTrail;

ZElement<ElementType>* m_pEmptyListHead;
ZElement<ElementType>* m_pEmptyListTrail;
set<DWORD> m_setListIndex;

};

template<class ElementType>
ZList<ElementType>::ZList(void):m_dwListMaxCount(0),m_dwListNowCount(0),m_pListHead(NULL),m_pListTrail(NULL),
m_pEmptyListHead(NULL),m_pEmptyListTrail(NULL)
{
}

template<class ElementType>
ElementType* ZList<ElementType>::ZNew()
{
if(m_dwListNowCount < m_dwListMaxCount)
{
ZElement<ElementType>* pZElement = m_pEmptyListHead;
ZeroMemory(pZElement->Element,sizeof(pZElement->Element));
if (m_dwListNowCount == 0)
m_pListHead = m_pEmptyListHead;
m_pListTrail->Next = m_pEmptyListHead;
m_pEmptyListHead->Prev = m_pListTrail;
m_pListTrail = m_pEmptyListHead;
m_pEmptyListHead = m_pEmptyListHead->Next;
pZElement->Next = NULL;
m_setListIndex.insert((DWORD)&pZElement);
m_dwListNowCount++;
return pZElement->Element;
}
else
{
ZElement<ElementType>* pZElement = new ZElement<ElementType>;
if (pZElement != NULL)
{
pZElement->Element = new ElementType;
pZElement->Next = NULL;
pZElement->Prev = m_pEmptyListTrail;
if (m_dwListNowCount==0)
m_pListHead = pZElement;
m_pListTrail->Next = pZElement;
m_pListTrail = pZElement;
m_dwListNowCount++;
m_dwListMaxCount++;
return pZElement->Element;
}
else
return NULL;
}
}

int _tmain(int argc, _TCHAR* argv[])
{
ZList<int> aZList;
int* a = aZList.ZNew();
return 0;
}


错误为：
1>TestZList.obj : error LNK2019: 无法解析的外部符号 "public: virtual __thiscall ZList<int>::~ZList<int>(void)" (??1?$ZList@H@@UAE@XZ)，该符号在函数 _wmain 中被引用

[taodm]

提示很清楚啊，你没实现析构函数。

[ouyh12345]

~ZList的函数体呢？

[K行天下]

没有实现析构函数

template <class ElementType>
ZList<ElementType>::~ZList()
{
;//实现，释放内存！！
}

另外这个函数有误，改了下

template <class ElementType>
ElementType* ZList <ElementType>::ZNew()
{
    if(m_dwListNowCount < m_dwListMaxCount)
    {
        cout<<"df"<<endl;
        ZElement <ElementType>* pZElement = m_pEmptyListHead;
        ZeroMemory(pZElement->Element,sizeof(pZElement->Element));
        if (m_dwListNowCount == 0)
            m_pListHead = m_pEmptyListHead;
        m_pListTrail->Next = m_pEmptyListHead;
        m_pEmptyListHead->Prev = m_pListTrail;
            m_pListTrail = m_pEmptyListHead;
        m_pEmptyListHead = m_pEmptyListHead->Next;
        pZElement->Next = NULL;
        m_setListIndex.insert((DWORD)&pZElement);
        m_dwListNowCount++;

        return pZElement->Element;
    }
    else
    {

        ZElement <ElementType>* pZElement = new ZElement <ElementType>;
        if (pZElement != NULL)
        {

            pZElement->Element = new ElementType;

            pZElement->Next = NULL;
            pZElement->Prev = m_pEmptyListTrail;

            if (m_dwListNowCount==0)
                m_pListHead = pZElement;

            m_pListTrail = pZElement;
            m_pListTrail->Next = pZElement;


            m_dwListNowCount++;
            m_dwListMaxCount++;

            return pZElement->Element;
        }
        else
            return NULL;
    }
}