devset.cpp

一个通讯管理机的源代码。比较好用。推荐

#include "devset.h"

bool CDevSet::GetFirst()
{
	bool bRet = false;
	if ( GetFirstRecord() == XB_NO_ERROR )
	{
		m_wDevNo = GetLongField(devno);
		m_wChannelNo = GetLongField(channelno);
		char* p = GetStringField(devname);
		int nLen = strlen(p);
		memcpy(m_szDevName,p,nLen+1);		
		m_byDllAddr = GetLongField(dlladdr);
		m_bIsOn = GetLogicalField(ison);
		m_byLocalNo = GetLongField(localno);
		m_strDT = GetStringField(kind);
		m_wPasswd = (WORD)GetLongField(passwd);
		m_wConnectYXNo = GetLongField(connectyxno);
		m_dwIPAddr = GetLongField(ipaddr);
		bRet = true;
	}
	return bRet;
}
	
bool CDevSet::GetNext()
{
	bool bRet = false;
	if (GetNextRecord() == XB_NO_ERROR )
	{
		m_wDevNo = GetLongField(devno);
		m_wChannelNo = GetLongField(channelno);
		char* p = GetStringField(devname);
		int nLen = strlen(p);
		memcpy(m_szDevName,p,nLen+1);		
		m_byDllAddr = GetLongField(dlladdr);
		m_bIsOn = GetLogicalField(ison);
		m_byLocalNo = GetLongField(localno);
		m_strDT = GetStringField(kind);
		m_wPasswd = (WORD)GetLongField(passwd);
		m_dwIPAddr = GetLongField(ipaddr);
		bRet = true;
	}
	return bRet;
}
	
short CDevSet::Update()
{
	PutLongField(devno,m_wDevNo);
	PutField(devname,m_szDevName);
	PutLongField(dlladdr,m_byDllAddr);
	PutLongField(channelno,m_wChannelNo);
	PutField(ison,m_bIsOn?"T":"F");
	PutLongField(localno,m_byLocalNo);
	PutField(kind,m_strDT.data());
	PutLongField(passwd,m_wPasswd);
	PutLongField(connectyxno,m_wConnectYXNo);
	PutLongField(ipaddr,m_dwIPAddr);
	return PutRecord(GetCurRecNo());
}

short CDevSet::Add()
{
	BlankRecord();			/* blank out the record buffer */
	PutLongField(devno,m_wDevNo);
	PutField(devname,m_szDevName);
	PutLongField(dlladdr,m_byDllAddr);
	PutLongField(channelno,m_wChannelNo);
	PutField(ison,m_bIsOn?"T":"F");
	PutLongField(localno,m_byLocalNo);
	PutField(kind,m_strDT.data());
	PutLongField(passwd,m_wPasswd);
	PutLongField(connectyxno,m_wConnectYXNo);
	PutLongField(ipaddr,m_dwIPAddr);
	return AppendRecord();
}

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