if (rgpwsz[i])
{
wprintf(L'%s ', rgpwsz[i]);
CoTaskMemFree(rgpwsz[i]);
}
}
} while (hr == S_OK);
}
// utility function to print initial state of
// a chat session
void PrintToDate(IChatSession *pcs)
{
IEnumString *pes = 0;
HRESULT hr = pcs->GetStatements(&pes);
if (SUCCEEDED(hr))
{
PrintAllStrings(pes);
pes->Release();
}
}
// this class implements the callback interface
// that receives chat notifications. It simply
// prints the event to the console
class EventSink : public IChatSessionEvents
{
public:
STDMETHODIMP QueryInterface(REFIID riid, void**ppv)
{
if (riid == IID_IUnknown)
*ppv = static_cast<IChatSessionEvents*>(this);
else if (riid == IID_IChatSessionEvents)
*ppv = static_cast<IChatSessionEvents*>(this);
else
return (*ppv = 0), E_NOINTERFACE;
reinterpret_cast<IUnknown*>(*ppv)->AddRef();
return S_OK;
}
STDMETHODIMP_(ULONG) AddRef(void)
{
return 2;
}
STDMETHODIMP_(ULONG) Release(void)
{
return 1;
}
STDMETHODIMP OnNewStatement(const OLECHAR *pwszUser,
const OLECHAR *pwszStmt)
{
wprintf(L'%-14s: %s ', pwszUser, pwszStmt);
return S_OK;
}
STDMETHODIMP OnNewUser(const OLECHAR *pwszUser)
{
wprintf(L' >>> Say Hello to %s ', pwszUser);
return S_OK;
}
STDMETHODIMP OnUserLeft(const OLECHAR *pwszUser)
{
wprintf(L' >>> Say Bye to %s ', pwszUser);
return S_OK;
}
};
// type of operations this client can perform
enum ACTION
{
ACTION_NONE,
ACTION_CHAT,
ACTION_DELETE_SESSION,
ACTION_LIST_SESSION_NAMES,
};
// run chat command
void Chat(const OLECHAR *pwszSession,
IChatSessionManager *pcsm, // manager
COAUTHIDENTITY *pcai, // user
bool bAnonymous) // anonymous
{
// create or get the named session
IChatSession *pcs = 0;
HRESULT hr = pcsm->FindSession(pwszSession, FALSE,
TRUE, &pcs);
if (SUCCEEDED(hr))
{
// adjust security blanket for session interface
if (!bAnonymous)
hr = CoSetProxyBlanket(pcs, RPC_C_AUTHN_WINNT,
RPC_C_AUTHZ_NONE, 0,
RPC_C_AUTHN_LEVEL_PKT,
RPC_C_IMP_LEVEL_IDENTIFY,
pcai, EOAC_NONE);
// catch up on past messages
PrintToDate(pcs);
// hook up event sink to receive new messages
EventSink es;
DWORD dwReg;
hr = pcs->Advise(&es, &dwReg);
if (SUCCEEDED(hr))
{
// run UI loop to get statements from console and send them
