Method CDeferredCommand

common/baseclasses/ctlutil.cpp:1654–1712

// lifetime is controlled by refcounts (see defer.h)

CDeferredCommand::CDeferredCommand(__inout CCmdQueue *pQ, __in_opt LPUNKNOWN pUnk, __inout HRESULT *phr,
                                   __in LPUNKNOWN pUnkExecutor, REFTIME time, __in GUID *iid, long dispidMethod,
                                   short wFlags, long nArgs, __in_ecount(nArgs) VARIANT *pDispParams,
                                   __out VARIANT *pvarResult, __out short *puArgErr, BOOL bStream)
    : CUnknown(NAME("DeferredCommand"), pUnk)
    , m_pQueue(pQ)
    , m_pUnk(pUnkExecutor)
    , m_iid(iid)
    , m_dispidMethod(dispidMethod)
    , m_wFlags(wFlags)
    , m_DispParams(nArgs, pDispParams, phr)
    , m_pvarResult(pvarResult)
    , m_bStream(bStream)
    , m_hrResult(E_ABORT)

{
    // convert REFTIME to REFERENCE_TIME
    COARefTime convertor(time);
    m_time = convertor;

    // no check of time validity - it's ok to queue a command that's
    // already late

    // check iid is supportable on pUnk by QueryInterface for it
    IUnknown *pInterface;
    HRESULT hr = m_pUnk->QueryInterface(GetIID(), (void **)&pInterface);
    if (FAILED(hr))
    {
        *phr = hr;
        return;
    }
    pInterface->Release();

    // !!! check dispidMethod and param/return types using typelib
    ITypeInfo *pti;
    hr = m_Dispatch.GetTypeInfo(*iid, 0, 0, &pti);
    if (FAILED(hr))
    {
        *phr = hr;
        return;
    }
    // !!! some sort of ITypeInfo validity check here
    pti->Release();

    // Fix up the dispid for put and get
    if (wFlags == DISPATCH_PROPERTYPUT)
    {
        m_DispParams.cNamedArgs = 1;
        m_DispId = DISPID_PROPERTYPUT;
        m_DispParams.rgdispidNamedArgs = &m_DispId;
    }

    // all checks ok - add to queue
    hr = pQ->Insert(this);
    if (FAILED(hr))
    {
        *phr = hr;
    }