C# Definition:

[ComImport]
[Guid("0000000b-0000-0000-C000-000000000046")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
interface IStorage {
    void CreateStream(
        /* [string][in] */ string pwcsName,
        /* [in] */ uint grfMode,
        /* [in] */ uint reserved1,
        /* [in] */ uint reserved2,
       /* [out] */ out IStream ppstm);

    void OpenStream(
        /* [string][in] */ string pwcsName,
        /* [unique][in] */ IntPtr reserved1,
        /* [in] */ uint grfMode,
        /* [in] */ uint reserved2,
        /* [out] */ out IStream ppstm);

    void CreateStorage(
        /* [string][in] */ string pwcsName,
        /* [in] */ uint grfMode,
        /* [in] */ uint reserved1,
        /* [in] */ uint reserved2,
        /* [out] */ out IStorage ppstg);

    void OpenStorage(
        /* [string][unique][in] */ string pwcsName,
        /* [unique][in] */ IStorage pstgPriority,
        /* [in] */ uint grfMode,
        /* [unique][in] */ IntPtr snbExclude,
        /* [in] */ uint reserved,
        /* [out] */ out IStorage ppstg);

    void CopyTo(
        /* [in] */ uint ciidExclude,
        /* [size_is][unique][in] */ Guid rgiidExclude,
        /* [unique][in] */ IntPtr snbExclude,
        /* [unique][in] */ IStorage pstgDest);

    void MoveElementTo(
        /* [string][in] */ string pwcsName,
        /* [unique][in] */ IStorage pstgDest,
        /* [string][in] */ string pwcsNewName,
        /* [in] */ uint grfFlags);

    void Commit(
        /* [in] */ uint grfCommitFlags);

    void Revert();

    void EnumElements(
        /* [in] */ uint reserved1,
        /* [size_is][unique][in] */ IntPtr reserved2,
        /* [in] */ uint reserved3,
        /* [out] */ out IEnumSTATSTG ppenum);

    void DestroyElement(
        /* [string][in] */ string pwcsName);

    void RenameElement(
        /* [string][in] */ string pwcsOldName,
        /* [string][in] */ string pwcsNewName);

    void SetElementTimes(
        /* [string][unique][in] */ string pwcsName,
        /* [unique][in] */ FILETIME pctime,
        /* [unique][in] */ FILETIME patime,
        /* [unique][in] */ FILETIME pmtime);

    void SetClass(
        /* [in] */ Guid clsid);

    void SetStateBits(
        /* [in] */ uint grfStateBits,
        /* [in] */ uint grfMask);

    void Stat(
        /* [out] */ out STATSTG pstatstg,
        /* [in] */ uint grfStatFlag);

}

VB Definition:

<ComImport> _
<Guid("TODO")> _
'TODO: Insert <InterfaceType(ComInterfaceType.InterfaceIsIUnknown)> _ if this doesn't derive from IDispatch
Interface IStorage
   TODO
End Interface

User-Defined Types:

STATSTG

Notes:

None.