Public Function IsTrackVisible( _
    ByVal TrackId As Integer, _
    ByVal Time As System.Object _
) As 

public bool IsTrackVisible(
    int TrackId,
    System.Object Time
);

public: bool IsTrackVisible(
    int TrackId,
    VARIANT Time
);

public bool isTrackVisible(
    Integer TrackId,
    VARIANT Time
);

public: HRESULT IsTrackVisible(
    int TrackId,
    VARIANT Time,
    VARIANT_BOOL * pRetVal
);