コード例 #1
0
        public IntPtr CreateInstance(CLSCTX dwContext, string server)
        {
            IntPtr pInterface = IntPtr.Zero;

            if (dwContext == CLSCTX.ALL)
            {
                if (DefaultServerType == COMServerType.InProcServer32)
                {
                    dwContext = CLSCTX.INPROC_SERVER;
                }
                else if (DefaultServerType == COMServerType.LocalServer32)
                {
                    dwContext = CLSCTX.LOCAL_SERVER;
                }
                else if (DefaultServerType == COMServerType.InProcHandler32)
                {
                    dwContext = CLSCTX.INPROC_HANDLER;
                }
                else
                {
                    dwContext = CLSCTX.SERVER;
                }
            }

            Guid iid   = COMInterfaceEntry.CreateKnownInterface(COMInterfaceEntry.KnownInterfaces.IUnknown).Iid;
            Guid clsid = Clsid;

            int hr = 0;

            if (server != null)
            {
                MULTI_QI[] qis = new MULTI_QI[1];
                qis[0] = new MULTI_QI(iid);
                COSERVERINFO server_info = new COSERVERINFO(server);
                try
                {
                    hr = COMUtilities.CoCreateInstanceEx(ref clsid, IntPtr.Zero, dwContext, server_info, 1, qis);
                    if (hr == 0)
                    {
                        hr = qis[0].HResult();
                        if (hr == 0)
                        {
                            pInterface = qis[0].GetObjectPointer();
                        }
                    }
                }
                finally
                {
                    ((IDisposable)qis[0]).Dispose();
                }
            }
            else
            {
                hr = COMUtilities.CoCreateInstance(ref clsid, IntPtr.Zero, dwContext, ref iid, out pInterface);
            }

            if (hr != 0)
            {
                Marshal.ThrowExceptionForHR(hr);
            }

            return(pInterface);
        }