Return state of specifed object and optionally some extra info (like path to file, device name etc.)

Sub MFStateGet( _
   ByRef _peState As eMState, _
   ByRef _pbsExtraInfo As String _
) 

void MFStateGet( 
   out eMState _peState,
   out string _pbsExtraInfo
)

procedure MFStateGet( 
   Out  _peState: eMState;
   Out  _pbsExtraInfo: String
); 

void MFStateGet( 
   [PARAMFLAG::Out] eMState _peState,
   [PARAMFLAG::Out] BSTR* _pbsExtraInfo
)