I keep on studying about Qt

As I said in phosphorescence: Qt newbie seminar in Tokyo, I'm nwebie about Qt, and now studying with book: "C++ GUI Programming with Qt 4", but it's 1st edition.

Why 1st editon, not 2nd edition?

Because I'm reading it with Japanese translation edition that is translated until 1st edition, not 2nd edition.

By the way, the cover of Japanese translation edition is different from original one. See the cover!

As you can see, it's O'Reilly-ish. There is no wonder about it, Japanese translation edition is published from O'Reilly Japan (written in Japanese).