function GetProperty(const PropertySetId: TGUID; PropertyId: DWORD;
var pPropertyParams; cbPropertyParams: DWORD;
var pPropertyData; cbPropertyData: DWORD;
var pcbReturnedData: ULONG): HRESULT;
** IKsPropertySet methods
function QuerySupport(const PropertySetId: TGUID; PropertyId: DWORD;
var pSupport: ULONG): HRESULT;