I have recently published another book with Packt Publishing, entitled “Hands-On GUI Programming with C++ and Qt5“. This is the 3rd book I’ve written so far, and hopefully the content quality is improving more this time.
If you’re using Kindle for reading ebooks, you can get this book from Amazon. Otherwise, you can get the ebook and printed copy at Packtpub. You can also get all the source files used in this book at the Github page.