*SIGH* No, Apple legitimately made a deal with Xerox to use those ideas for their company in a legal stock exchange. Apple actaully hired many of its engineers after receiving extensive demos on the project.
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For the record, The "look and feel" lawsuit was bogus from the get go. Apple never should have initiated it - total waste of time in hindsight.
Anything Apple got from Xerox was
legally obtained and later enahnced by Apple ideas already being implemented. Apple was invited to Xerox to see these tools. Nothing was stolen.
For the record, Apple has never claimed that they invented the GUI desktop - maybe they were the first company to successfully commercialize it, but they never claimed invention.
Microsoft had no such partnership with Xerox but their GUI ideas were lifted from seeing the Lisa and Macintosh (I believe they were given one before they were being sold) because at the time they had a deal with Apple to develop software. Windows was a clone of Apple's technology that they wrote from the ground up. MS did steal some of Apple's Quicktime code to build Windows Media player, but that came much much later.