GUIs and constraint propagation

Subject: GUIs and constraint propagation
From: Pawel Jachowicz (
Date: Fri May 19 2000 - 13:11:51 MET DST


I am looking for articles, papers and other references pertaining to
constraint propagation in the context of Graphical User Interfaces.
Specifically, I am interested in

- algorithms that keep all of the graphical objects in place in relation to
each other, after some update to the graphical window

- handling of inconsistencies within the constraint store that exist as a
result of an update of the graphical window

- examples of the various representations of the spacial constraints between
the graphical objects (here specifically dealing with positional

Any information on this topic would be very appreciated. Please use my
personal email address instead of the list's for your correspondence: or


Pawel Jachowicz Software Developer, nxSummit Team
net-linx Europe GmbH
Kaethe-Kollwitz-Ufer 76 Tel: +49-351-31875-672
01309 Dresden, Sachsen Cell: +49-170-622-75-26

Where a calculator on the ENIAC is equipped with 18,000
vacuum tubes and weighs 30 tons, computers in the future
may have only 1,000 vacuum tubes and weigh only 1 1/2 tons.
                           ---Popular Mechanics, March 1949

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