C# Definition:

[ComImport, Guid ( "d57c7288-d4ad-4768-be02-9d969532d960" ), InterfaceType ( ComInterfaceType.InterfaceIsIUnknown )]
interface IFileOpenDialog : IFileDialog
{
    internal interface IFileOpenDialog : IFileDialog
    {
    // Defined on IModalWindow - repeated here due to requirements of COM interop layer
    // --------------------------------------------------------------------------------
    [MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime ), PreserveSig]
    int Show ( [In] IntPtr parent );

    // Defined on IFileDialog - repeated here due to requirements of COM interop layer
    [MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    void SetFileTypes([In] uint cFileTypes, [In, MarshalAs(UnmanagedType.LPArray)] COMDLG_FILTERSPEC[] rgFilterSpec);
    void SetFileTypes ( [In] uint cFileTypes, [In] COMDLG_FILTERSPEC[] rgFilterSpec );

    [MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    void SetFileTypeIndex ( [In] uint iFileType );

    [MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    void GetFileTypeIndex ( out uint piFileType );

    [MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    void Advise ( [In, MarshalAs ( UnmanagedType.Interface )] IFileDialogEvents pfde, out uint pdwCookie );

    [MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    void Unadvise ( [In] uint dwCookie );

    [MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    void SetOptions ( [In] FOS fos );

    [MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    void GetOptions ( out FOS pfos );

    [MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    void SetDefaultFolder ( [In, MarshalAs ( UnmanagedType.Interface )] IShellItem psi );

    [MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    void SetFolder ( [In, MarshalAs ( UnmanagedType.Interface )] IShellItem psi );

    [MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    void GetFolder ( [MarshalAs ( UnmanagedType.Interface )] out IShellItem ppsi );

    [MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    void GetCurrentSelection ( [MarshalAs ( UnmanagedType.Interface )] out IShellItem ppsi );

    [MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    void SetFileName ( [In, MarshalAs ( UnmanagedType.LPWStr )] string pszName );

    [MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    void GetFileName ( [MarshalAs ( UnmanagedType.LPWStr )] out string pszName );

    [MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    void SetTitle ( [In, MarshalAs ( UnmanagedType.LPWStr )] string pszTitle );

    [MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    void SetOkButtonLabel ( [In, MarshalAs ( UnmanagedType.LPWStr )] string pszText );

    [MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    void SetFileNameLabel ( [In, MarshalAs ( UnmanagedType.LPWStr )] string pszLabel );

    [MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    void GetResult ( [MarshalAs ( UnmanagedType.Interface )] out IShellItem ppsi );

    [MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    void AddPlace ( [In, MarshalAs ( UnmanagedType.Interface )] IShellItem psi, NativeMethods.FDAP fdap );

    [MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    void SetDefaultExtension ( [In, MarshalAs ( UnmanagedType.LPWStr )] string pszDefaultExtension );

    [MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    void Close ( [MarshalAs ( UnmanagedType.Error )] int hr );

    [MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    void SetClientGuid ( [In] ref Guid guid );

    [MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    void ClearClientData ( );

    // Not supported:  IShellItemFilter is not defined, converting to IntPtr
    [MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    void SetFilter ( [MarshalAs ( UnmanagedType.Interface )] IntPtr pFilter );

    // Defined by IFileOpenDialog
    // ---------------------------------------------------------------------------------
    [MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    void GetResults ( [MarshalAs ( UnmanagedType.Interface )] out IShellItemArray ppenum );

    [MethodImpl ( MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime )]
    void GetSelectedItems ( [MarshalAs ( UnmanagedType.Interface )] out IShellItemArray ppsai );
}
    }

VB Definition:

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

User-Defined Types:

None.

Notes:

None.

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