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Visual C++

MailSaveMngr.cpp：源码内容

							#include "StdAfx.h"
#include "MailSaveMngr.h"
#include <Shlwapi.h>
#include <windows.h>
CMailSaveMngr::CMailSaveMngr(void)
{	
}
CMailSaveMngr::~CMailSaveMngr(void)
{
}
///<summary>
///	  Save the mails and return the mail position
///</summary>
BOOL CMailSaveMngr::SaveMail(LPCTSTR szMail, const int nMailLen, MAILPOS& sMailPos)
{
	sMailPos.nBlockIndex = m_MailTmpFile.ApplyMailBlocks(1);
	m_MailTmpFile.WriteMailBlock(sMailPos.nBlockIndex, (void*)szMail, nMailLen);
	return TRUE;
}
///<summary>
///	  load the mail content
///</summary>
BOOL CMailSaveMngr::LoadMail(MAILPOS sMailPos, LPCTSTR szMail, int nMailLen)
{
	m_MailTmpFile.ReadMailBlock(sMailPos.nBlockIndex, nMailLen, (void*)szMail);
	return TRUE;
}
///<summary>
///	  delete the certain mail from the database
///</summary>
void CMailSaveMngr::DelMail(MAILPOS sMailPos)
{
	m_MailTmpFile.ReleaseMailBlocks(sMailPos.nBlockIndex, 1);
}
///<summary>
///	  initial the database to save the mails
///</summary>
BOOL CMailSaveMngr::InitMailTmpFile()
{
	TCHAR szDatabase[_MAX_PATH] = {0};
	GetModuleFileName(NULL, szDatabase, _MAX_PATH);
	PathRemoveFileSpec(szDatabase);
	_tcscat_s(szDatabase, _MAX_PATH, MAIL_FILE_NAME);
	if (PathFileExists(szDatabase))
	{
		m_MailTmpFile.Open(szDatabase, TRUE);
		return TRUE;
	}
	else
	{
		m_MailTmpFile.CreateEmptyFile(szDatabase);
		return FALSE;
	}
}

						