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From: swick@ATHENA.MIT.EDU (Ralph R Swick)
Newsgroups: comp.windows.x
Subject: Re: Text widget question #3862195
Message-ID: <8902221913.AA27052@LYRE.MIT.EDU>
Date: 22 Feb 89 19:13:01 GMT
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Sender: daemon@bloom-beacon.MIT.EDU
Organization: DEC/MIT Project Athena
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     Date:  Wed, 22 Feb 89 17:56:11 +0100
     From:  Oliver Laumann <net%TUB.BITNET@mitvma.mit.edu>

     I don't understand why it is possible to set the ``edit type''
     resource of an AsciiDisk or AsciiString widget (i.e. by passing an
     argument with the name XtNeditType to XtCreateWidget()).

Look at XtSetSubvalues() and Core.set_values_hook

     Neither the AsciiDisk (or AsciiString) nor the Text widget class
     declares such a resource, nor does a call to XtGetResourceList()
     return an ``edit type'' resource.

Correct.

     It is obviously possible to set resources for a widget that are
     neither defined in the widget's class nor in a super class nor
     by the parent widget's constraints.

Yes, the hooks are put there for many purposes, not all of them benign.

     Is there a way for the
     application programmer to obtain a list of these resources similar
     to XtGetResourceList() for ``normal'' resources?

No, not in general.  Such resources are effectively hidden from
the Intrinsics and unless the widget class itself exports a way to
retrieve the list of extra resources, you're out of luck.