house.h

这是一个关于数据库的例子

// House.H : Declaration of the CHouse class

#ifndef __HOUSE_H_
#define __HOUSE_H_

class CHouseAccessor
{
public:
	TCHAR m_beeppager[51];
	LONG m_buildingnum;
	LONG m_cellnum;
	TCHAR m_email[51];
	TCHAR m_housemaster[51];
	TCHAR m_housetel[51];
	TCHAR m_mobile[51];
	TCHAR m_office[51];
	TCHAR m_officetel[51];
	LONG m_roomnum;
	TCHAR m_sectionname[51];

BEGIN_COLUMN_MAP(CHouseAccessor)
	COLUMN_ENTRY(1, m_housemaster)
	COLUMN_ENTRY(2, m_sectionname)
	COLUMN_ENTRY(3, m_buildingnum)
	COLUMN_ENTRY(4, m_cellnum)
	COLUMN_ENTRY(5, m_roomnum)
	COLUMN_ENTRY(6, m_housetel)
	COLUMN_ENTRY(7, m_office)
	COLUMN_ENTRY(8, m_officetel)
	COLUMN_ENTRY(9, m_beeppager)
	COLUMN_ENTRY(10, m_mobile)
	COLUMN_ENTRY(11, m_email)
END_COLUMN_MAP()

DEFINE_COMMAND(CHouseAccessor, _T(" \
	SELECT \
		housemaster, \
		sectionname, \
		buildingnum, \
		cellnum, \
		roomnum, \
		housetel, \
		office, \
		officetel, \
		beeppager, \
		mobile, \
		email  \
		FROM house"))

	// You may wish to call this function if you are inserting a record and wish to
	// initialize all the fields, if you are not going to explicitly set all of them.
	void ClearRecord()
	{
		memset(this, 0, sizeof(*this));
	}
};

class CHouse : public CCommand<CAccessor<CHouseAccessor> >
{
public:
	HRESULT Open()
	{
		HRESULT		hr;

		hr = OpenDataSource();
		if (FAILED(hr))
			return hr;

		return OpenRowset();
	}
	HRESULT OpenDataSource()
	{
		HRESULT		hr;
		CDataSource db;
		CDBPropSet	dbinit(DBPROPSET_DBINIT);

		dbinit.AddProperty(DBPROP_AUTH_CACHE_AUTHINFO, true);
		dbinit.AddProperty(DBPROP_AUTH_ENCRYPT_PASSWORD, false);
		dbinit.AddProperty(DBPROP_AUTH_MASK_PASSWORD, false);
		dbinit.AddProperty(DBPROP_AUTH_PASSWORD, OLESTR(""));
		dbinit.AddProperty(DBPROP_AUTH_USERID, OLESTR("Admin"));
		dbinit.AddProperty(DBPROP_INIT_DATASOURCE, OLESTR("Inhabitants.mdb"));
		dbinit.AddProperty(DBPROP_INIT_MODE, (long)16);
		dbinit.AddProperty(DBPROP_INIT_PROMPT, (short)4);
		dbinit.AddProperty(DBPROP_INIT_PROVIDERSTRING, OLESTR(""));
		dbinit.AddProperty(DBPROP_INIT_LCID, (long)1033);
//		dbinit.AddProperty(DBPROP_AUTH_PERSIST_SENSITIVE_AUTHINFO, false);
		hr = db.Open(_T("Microsoft.Jet.OLEDB.4.0"), &dbinit);
		if (FAILED(hr))
			return hr;

		return m_session.Open(db);
	}
	HRESULT OpenRowset()
	{
		// Set properties for open
		CDBPropSet	propset(DBPROPSET_ROWSET);
		propset.AddProperty(DBPROP_IRowsetChange, true);
		propset.AddProperty(DBPROP_UPDATABILITY, DBPROPVAL_UP_CHANGE | DBPROPVAL_UP_INSERT | DBPROPVAL_UP_DELETE);

		return CCommand<CAccessor<CHouseAccessor> >::Open(m_session, NULL, &propset);
	}
	CSession	m_session;
};

#endif // __HOUSE_H_