modbusregset.cpp

一个通讯管理机的源代码。比较好用。推荐

#include "modbusregset.h"


bool CModbusRegDefSet::GetFirst()
{
	bool bRet = false;
	if ( GetFirstRecord() == XB_NO_ERROR )
	{
		m_wRegAddr = GetLongField(localno);
		m_wDevID = GetLongField(devno);
		m_wMSDevID = GetLongField(msdevno);
		m_wArea = GetLongField(area);
		m_wLocalAddr = GetLongField(regaddr);
		m_strName = GetStringField(name);
		bRet = true;
	}
	return bRet;
}
	
bool CModbusRegDefSet::GetNext()
{
	bool bRet = false;
	if (GetNextRecord() == XB_NO_ERROR )
	{
		m_wRegAddr = GetLongField(localno);
		m_wMSDevID = GetLongField(msdevno);
		m_wDevID = GetLongField(devno);
		m_wArea = GetLongField(area);
		m_wLocalAddr = GetLongField(regaddr);
		m_strName = GetStringField(name);
		bRet = true;
	}
	return bRet;
}
	
bool CModbusRegDefSet::GetFirst(WORD wArea)
{
	bool bRet = false;
	if ( GetFirstRecord() == XB_NO_ERROR )
	{
		do {
			m_wRegAddr = GetLongField(localno);
			m_wMSDevID = GetLongField(msdevno);
			m_wDevID = GetLongField(devno);
			m_wArea = GetLongField(area);
			m_wLocalAddr = GetLongField(regaddr);
			m_strName = GetStringField(name);
		} while ((m_wArea != wArea) && (GetNextRecord() == XB_NO_ERROR ));
		if (m_wArea == wArea)
			bRet = true;
	}
	return bRet;
}
	
bool CModbusRegDefSet::GetNext(WORD wArea)
{
	bool bRet = false;
	if (GetNextRecord() == XB_NO_ERROR )
	{
		do {
			m_wRegAddr = GetLongField(localno);
			m_wMSDevID = GetLongField(msdevno);
			m_wDevID = GetLongField(devno);
			m_wArea = GetLongField(area);
			m_wLocalAddr = GetLongField(regaddr);
			m_strName = GetStringField(name);
		} while ((m_wArea != wArea) && (GetNextRecord() == XB_NO_ERROR ));
		if (m_wArea == wArea)
			bRet = true;
	}
	return bRet;
}
	
short CModbusRegDefSet::Update()
{
	PutLongField(localno,m_wRegAddr);
	PutLongField(msdevno,m_wMSDevID);
	PutLongField(devno,m_wDevID);
	PutLongField(area,m_wArea);
	PutLongField(regaddr,m_wLocalAddr);
	PutField(name,m_strName.data());
	return PutRecord(GetCurRecNo());
}

short CModbusRegDefSet::Add()
{
	BlankRecord();			/* blank out the record buffer */
	PutLongField(localno,m_wRegAddr);
	PutLongField(devno,m_wDevID);
	PutLongField(area,m_wArea);
	PutLongField(regaddr,m_wLocalAddr);
	PutField(name,m_strName.data());
	return AppendRecord();
}

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

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