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.h文件如下:
#pragma once class CMyData : public CObject { public: CPoint pt; int m_iData; char buff[10]; public: DECLARE_SERIAL(CMyData)//必須聲明此宏 CMyData(){} CMyData(int nData, CPoint pt1) { m_iData = nData; pt = pt1; } virtual void Serialize(CArchive& ar); };
.cpp文件內(nèi)容如下:
#include "stdafx.h" #include "mytest.h" IMPLEMENT_SERIAL(CMyData, CObject, 1)//必須包含此宏 void CMyData::Serialize(CArchive& ar) { CObject::Serialize(ar); if (ar.IsStoring()) { ar << pt << m_iData; ar.Write(buff[i],10); } else { ar >> pt >> m_iData; ar.Read(buff[i],10); } }
在調(diào)用ar.WriteString后,需再用此方法寫入:ar.WriteString(_T("\n"));
調(diào)用方法如下:
//寫入內(nèi)容 CMyData d(12,CPoint(1,8)); CFile file(_T("1.txt"), CFile::modeCreate | CFile::modeWrite); //串行化,存儲(chǔ) CArchive ar(&file, CArchive::store); ar.WriteCount(1); //寫入對(duì)象個(gè)數(shù) ar.WriteObject(&d);//寫入對(duì)象 ar.Close(); file.Close(); //讀取內(nèi)容 CFile mFile; if (mFile.Open(_T("1.txt"), CFile::modeRead) == 0) return 0; char buf[512]; CArchive ar(&mFile, CArchive::load); unsigned long length = ar.ReadCount();//按寫入順序,讀取存儲(chǔ)的數(shù)據(jù)單元個(gè)數(shù) CMyData * pData; for (int i = 0; i < length; i++) { //讀取一個(gè)類信息,同時(shí)指針移動(dòng)到下一個(gè)類信息開始 pData = (CMyData *)ar.ReadObject(RUNTIME_CLASS(CMyData)); cout << pData->m_iData << endl; cout <<"x="<< pData->pt.x << " y=" << pData->pt.y << endl; } ar.Close(); mFile.Close();
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