[
	object,
	uuid(230CB043-8F90-48C4-82A4-72ED27165217),
	dual,
	nonextensible,
	helpstring("ICoClass Interface"),
	pointer_default(unique),
	oleautomation
]
interface ICoCopyFiles : IDispatch{
	[id( 1 ), helpstring("method MyMethod")] HRESULT MyMethod([in] BSTR bStr1 [in] BSTR bStr2, [in] SHORT Index, [out,retval] LONG* Result);
};

if SUCCEEDED(ppv->GetIDsOfNames(IID_NULL, &bStr,  1 , GetUserDefaultLCID(), &dispid))
			{
				VARIANTARG vVar[ 3 ];
				//DISPID __dispid[1];
				//__dispid[0] = DISPID_PROPERTYPUT;

				VariantInit(&vVar[ 0 ]);
				vVar[ 0 ].vt = VT_BSTR;
				vVar[ 0 ].bstrVal = bstrPathSc;

				VariantInit(&vVar[ 1 ]);
				vVar[ 1 ].vt = VT_BSTR;
				vVar[ 1 ].bstrVal = bstrPathDs;

				VariantInit(&vVar[ 2 ]);
				vVar[ 2 ].vt = VT_I2;
				vVar[ 2 ].iVal = - 1 ;

				VariantInit(&vResult);
				DISPPARAMS dParams = {&vVar[ 0 ], NULL,  3 ,  0 };

				EXCEPINFO excepInfo;
				memset(&excepInfo,  0 , sizeof excepInfo);
				UINT nArgErr = (UINT)- 1 ;

				SetLastError( 0 );
				hr = ppv->Invoke(dispid, IID_NULL, LOCALE_USER_DEFAULT, DISPATCH_METHOD, &dParams, &vResult, &excepInfo, &nArgErr);
				DWORD Err = GetLastError();
				if FAILED(hr)
				{	char msg[ 200 ];
					sprintf(msg, "Неудачный вызов метода.\nErrorCode = %d, HRESULT = %d", Err, long(hr));
					MessageBox(GetActiveWindow(), msg, "Ошибка", MB_OK | MB_ICONSTOP | MB_SYSTEMMODAL);
				}
			}

hr = ppv->Invoke(dispid, IID_NULL, LOCALE_USER_DEFAULT, DISPATCH_METHOD, &dParams, &vResult, &excepInfo, &nArgErr);

#import "здесь путь" no_namespace, named_guids
... 
ppv->MyMethod(bStr1, bStr2,  0 );
...