Quote Originally Posted by yop
Different things, Qt is an API, gdb is a debugger, ddd is gdb's graphical frontend. You'll need to use all three of them regardless the Qt version you'll use (offtopic: Don't you just love ddd? If the interface was better then it would dominate (not that I mind I only care about it's capabilities))
I used ddd and gdb but could not get string variables displayied and I wanted to use kwrite as my text editor. I found importing my source code to KDevelop gave me both.