cdtykset.cpp

一个通讯管理机的源代码。比较好用。推荐

#include "cdtykset.h"

bool CCDTYKSet::GetFirst()
{
	bool bRet = false;
	if ( GetFirstRecord() == XB_NO_ERROR )
	{
		m_wRouteNo = GetLongField(routeno);
		m_wDevNo = GetLongField(devno);
		m_wPointNo = GetLongField(pointno);
		bRet = true;
	}
	return bRet;
}

bool CCDTYKSet::GetNext()
{
	bool bRet = false;
	if (GetNextRecord() == XB_NO_ERROR )
	{
		m_wRouteNo = GetLongField(routeno);
		m_wDevNo = GetLongField(devno);
		m_wPointNo = GetLongField(pointno);
		bRet = true;
	}
	return bRet;
}
	
short CCDTYKSet::Update()
{
	PutLongField(routeno,m_wRouteNo);
	PutLongField(devno,m_wDevNo);
	PutLongField(pointno,m_wPointNo);
	return PutRecord(GetCurRecNo());
}

short CCDTYKSet::Add()
{
	BlankRecord();			/* blank out the record buffer */
	PutLongField(routeno,m_wRouteNo);
	PutLongField(devno,m_wDevNo);
	PutLongField(pointno,m_wPointNo);
	return AppendRecord();
}

void CCDTYKSet::DeleteAll()
{
	ExclusiveLock( F_SETLKW ); /* lock the files for our exclusive use */

	while (GetFirst())
	{
		DeleteRecord();
		if (RecordDeleted())
			PackDatabase(F_SETLKW);
	}
	ExclusiveUnlock();     /* unlock the files */
}