Properties that do nothing in TSelectDirectoryDialog

[jamie]

I've notice there are properties in the TSelectDirectoryDialog that are published and settable in the OI
of course but what for?

 It seems this is bases from the TOpenFile dialog which uses TfileDialog which is where these
unused properties are..

 maybe there should be a TCustomFileDialog and a TCustomOpenDialog so that properties that can't be used
are not published.

 The properties I am referring to are the Filter, FilterIndex DefaultExt which do not work for this, or a least I
can't get them to do anything.

 Would be nice to have a Hint Window Popup with a short list of the filters files in it so that we know that
folder does have at least some files of interest without actually showing them like in a normal OpenFile Dialog

 So am I correct to assume these published properties are dead weight for the TSelectDirectoryDialog?