Gtkmm and C++ book

["Arthur Maciel" <arthurmaciel gmail com>]

I appreciate the answer about my previous topic (interface designer).

By the questions I make here, I believe it is possible to notice I'm
not a proficient programmer. I've read the Gtkmm book online and
comprehended most of the content, but even though, I would like to
know (and this is kind of off-topic) if you recommend any good C++
book that points to object orientation and could serve as a C++
reference, too. I've read a C++ book (Brazilian one), but it is
superficial on many points, and I'm reading Design Patterns (Gamma)
now.
Do you have any other suggestions?

I thank you again.
Regards,
Arthur Maciel