Hi, I was looking at QT as a cross-platform language to use and I had a couple questions/concerns I couldn't find answers to online.

1. I heard from a friend's friend (info is a bit sketch) that we couldn't inherit or override anything. This seems false as from what I've seen you can inherit and create custom widgets. So are there restrictions on inheriting/overriding at all? Are there specific classes/widgets that we're not allowed to extend?

2. I'd like to know if there are a lot of debugging issues involved with multiple platform deployment (sorta like Java's write once debug everywhere..). I haven't found any posts really relating to this issue or going in depth, so I'd like to hear from those who've actually deployed to multiple platforms (actually just OSX/Linux - I'm planning to develop in Windows).


Thanks in advance!