channelset.cpp

一个通讯管理机的源代码。比较好用。推荐

#include "channelset.h"

bool CChannelSet::GetFirst()
{
	bool bRet = false;
	if ( GetFirstRecord() == XB_NO_ERROR )
	{
		m_strChannelName = GetStringField(channelname);		
		m_strComName = GetStringField(comname);	
		m_lBaudRate = GetLongField(baudrate);
		m_wChannelNo = GetLongField(channelno);
		m_byDataBit = GetLongField(databit);
		m_byStopBit = GetLongField(stopbit);
		m_byParity = GetLongField(parity);
		m_strKDL = GetStringField(kdl);
		m_bIsMaster = GetLogicalField(master);
		m_dwIntervalMS = GetLongField(intervalms);
		bRet = true;
	}
	return bRet;
}
	
bool CChannelSet::GetNext()
{
	bool bRet = false;
	if (GetNextRecord() == XB_NO_ERROR )
	{
		m_strChannelName = GetStringField(channelname);		
		m_strComName = GetStringField(comname);	
		m_lBaudRate = GetLongField(baudrate);
		m_wChannelNo = GetLongField(channelno);
		m_byDataBit = GetLongField(databit);
		m_byStopBit = GetLongField(stopbit);
		m_byParity = GetLongField(parity);
		m_strKDL = GetStringField(kdl);
		m_bIsMaster = GetLogicalField(master);
		m_dwIntervalMS = GetLongField(intervalms);
		bRet = true;
	}
	return bRet;
}
	
short CChannelSet::Update()
{
	PutField(channelname,m_strChannelName.data());		
	PutField(comname,m_strComName.data());	
	PutLongField(baudrate,m_lBaudRate);
	PutLongField(channelno,m_wChannelNo);
	PutLongField(databit,m_byDataBit);
	PutLongField(stopbit,m_byStopBit);
	PutLongField(parity,m_byParity);
	PutField(kdl,m_strKDL.data());
	PutField(master,m_bIsMaster?"T":"F");
	PutLongField(intervalms,m_dwIntervalMS);
	return PutRecord(GetCurRecNo());
}

short CChannelSet::Add()
{
	BlankRecord();			/* blank out the record buffer */
	PutField(channelname,m_strChannelName.data());		
	PutField(comname,m_strComName.data());
	PutLongField(baudrate,m_lBaudRate);
	PutLongField(channelno,m_wChannelNo);
	PutLongField(databit,m_byDataBit);
	PutLongField(stopbit,m_byStopBit);
	PutLongField(parity,m_byParity);
	PutField(kdl,m_strKDL.data());
	PutField(master,m_bIsMaster?"T":"F");
	PutLongField(intervalms,m_dwIntervalMS);
	return AppendRecord();
}

void CChannelSet::Delete(WORD	wChannelNo)
{
	ExclusiveLock( F_SETLKW ); /* lock the files for our exclusive use */
	
	if (GetFirst())
	{
		do {
			if (m_wChannelNo == wChannelNo)
			{
				DeleteRecord();
				if (RecordDeleted())
					PackDatabase(F_SETLKW);
				break;
			}
		} while(GetNext());
	}
	ExclusiveUnlock();     /* unlock the files */
}

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

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