Why doesn't Silverlight support Cursors.SizeAll?

Cursors.SizeAll is one of a few Windows cursors that are apparently off-li开发者_运维问答mits for Silverlight. What is the reason for this?

I read somewhere (not English) that it was done to reduce the size of the runtime. Is that true?

This sort of question is difficult to answer since the only people who can authoritatively answer it are the Silverlight team. There are quite a few missing so it would seem Silverlight has had to make some kind of choice as to which ones are the most commonly used. There is probably some cross platform considerations as well. Do UIs on a Mac use the SizeAll cursor, I dunno.

I can't think of where I would use the SizeAll cursor.