class CWorkTarget
{
...
static CWork* GetPtr(int nWork);

static CWorkTarget* FindWorkByID(WORD wWorkID);
...
};

CWork* CWorkTarget::GetPtr(int nWork)
{
	if (nWork < 0 || nWork >= count(s_xTrgWork)) return NULL;

	return &s_xTrgWork[nWork];
}

CWorkTarget* CWorkTarget::FindWorkByID(WORD wWorkID)
{
	for (int i = 0; i < count(s_apWork); ++i)
	{
		if (s_apWork[i]->isWaitingCPUReplies(wWorkID)) return s_apWork[i];
	}

	return NULL;
}