Xbox and Windows phone compatibility

[Telliax]

Hi. On suppoted platforms page both Xbox and Windows Phone are listed as "not supported". Can someone please elaborate on that? Why aren't those platforms supported, is there a fundamental problem?

I think that I've read somewhere that those platforms do not support PInvoke API, but I am unable to find a reliable source to back this up. And personally I am not too familiar with those platforms. So any links or information regarding this topic are very welcome!