_try _finally 编译错误

Question

bool CSockManager::addNewPeerName(SOCKET s,DWORD  dwIP, WORD wPort)
{
__try
{
m_lock.Lock();
pn_Iter  = m_peerName.find(s);
if (pn_Iter != m_peerName.end())
{
m_peerName.erase(pn_Iter);
}
SOCKCONNECTNAME     scn;
ZeroMemory(&scn,sizeof(scn));
scn.s                = s;
scn.sa_family        = AF_INET;
scn.sin_addr.s_addr  = dwIP;
scn.sin_port         = wPort;
m_peerName.insert(Init_pair(s,(SOCKCONNECTNAME)scn));
}
__finally
{
m_lock.Unlock();
}
return true;
}
这段代码编译提示 ：error C2712: 无法在要求对象展开的函数中使用 __try c:\documents and settings\luckystar\桌面\中国战网对战平台\udpclient\client\hook_game\sockmanager.cpp 83 hook_game请教各位大虾如何解决，google了，百度，都没有一个明确的答案，我是小白，谢谢了。

Answer 1

还有这段也是POVERLAPPED_RECORDER COverlapped::newOverlappedErcorder(LPWSAOVERLAPPED lpOverlapped)
{
POVERLAPPED_RECORDER pr = NULL;
EnterCriticalSection(&m_CriticalSection);
__try
{
if (m_ltAvailable.size() > 0)
{
c_Iter = m_ltAvailable.end();
int i  = (*c_Iter);
if(i<0)
{
DbPrint1("i<0");
}

m_ltAvailable.pop_back();
if (i >= 0 && i < OVERLAPPED_MAX)
{
pr = (m_pOverlappedRecorder + i);
m_OtoI.insert(Init_Pair((DWORD)  lpOverlapped ,i));
}
}
}
__finally
{
LeaveCriticalSection(&m_CriticalSection);
}
return pr;
}