本文实例讲述了C++中模板类的用法，分享给大家供大家参考。具体方法如下：
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//#include "StdAfx.h
#ifndef __AFXTLS_H__
#define __AFXTLS_H__
#include <Windows.h>
class CSimpleList
{
public:
CSimpleList(int nNextOffset=0);
void Construct(int nNextOffset);
//接口
BOOL IsEmpty() const;
void AddHead(void *p);
void RemoveAll();
void* GetHead() const;
void* GetNext(void* preElement) const;
BOOL Remove(void* p);
//为实现接口所需的成员
void *m_pHead;
size_t m_nextOffset;
void** GetNextPtr(void* preElement) const;
};
//类的内联函数
inline CSimpleList::CSimpleList(int nNextOffset)
{m_pHead = NULL; m_nextOffset = nNextOffset; }
inline void CSimpleList::Construct(int nNextOffset)
{m_nextOffset = nNextOffset; }
inline BOOL CSimpleList::IsEmpty() const
{
return m_pHead==NULL;
}
//inline void AddHead(void *p)
//{
//
//}
inline void CSimpleList::RemoveAll()
{
m_pHead = NULL;
}
inline void* CSimpleList::GetHead() const
{
return m_pHead;
}
inline void* CSimpleList::GetNext(void* preElement) const
{
return *GetNextPtr(preElement);
}
//inline BOOL CSimpleList::Remove(void* p)
//{
//
//}
inline void** CSimpleList::GetNextPtr(void* preElement) const
{
return (void**)((BYTE*)preElement+m_nextOffset);
}
//定义模板类
template<class TYPE>
class CTypedSimpleList:public CSimpleList
{
public:
CTypedSimpleList(int nNextOffset=0)
:CSimpleList(nNextOffset){}
void Construct(int nNextOffset);
//接口
void AddHead(TYPE p)
{
CSimpleList::AddHead((void*)p);
}
TYPE GetHead()
{
return (TYPE)CSimpleList::GetHead();
}
TYPE GetNext(TYPE preElement)
{
return (TYPE)CSimpleList::GetNext((void*)preElement);
}
BOOL Remove(TYPE p)
{
return CSimpleList::Remove(p);
}
//直接引用类的对象会调用此函数
operator TYPE()
{
return (TYPE)CSimpleList::GetHead();
}
};
#endif
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模板类的用法：
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//测试模板类
MyThreadData* pTempData;
CTypedSimpleList<MyThreadData*> templateList;
list.Construct(offsetof(MyThreadData, pNext));
//向链表中加数据
for (int i=100;i<110;i++)
{
pTempData = new MyThreadData;
pTempData->nShortData = i;
templateList.AddHead(pTempData);
}
//遍历链表，释放对象占用的资源
pTempData = templateList;
while (pTempData)
{
MyThreadData* pNextTempData = pTempData->pNext;
printf("TemplateDateList=%d\n",pTempData->nShortData);
delete pTempData;
pTempData = pNextTempData;
}
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希望本文所述对大家的C++程序设计有所帮助。