Hello,

Could you please explain a bit more what are you trying to do? Based only on the information you provide I would answer this:

While Newick files represent phylogenetic trees, the Qt graphic elements that you mention represent generic trees as a simple computer data type that consists of parents and children.. nothing more. Hence, while it might be possible to do what you want, I would not recommend it because then you will be unable to represent distances or support values, etc.. which are typical information that you might want to display in phylogenetic trees. 

If you look for a graphical way to represent or edit you newick files I can recommend you http://inf.imo-chile.cl/software/bosque.html

Other software are Mega or Ugene for example.

I hope that helps.

Best regards,

---sram

Thank you, Dr. Ramirez-Flandes

I actually wanted to create a simple newick tree viewer with Qt. However, I couldn't find it yet.

Could you give me some clue or direction where I can obtained it?

I provided a link in my previous message, can you see it? I will paste it again here:

http://inf.imo-chile.cl/software/bosque.html

best regards.