Qt puts a fine layer on top of C++ to make it much less verbose, at least, not more than C#. Plus there are python, ruby and JS bindings for Qt.
if you use Gnome - Gtk# is better choose than qt with it's strange looking controls (under gnome). Also I don't think it will be ever possible to make such a good autocomplete/intellisense with any qt/c++ tool (lack of reflection not to mention LINQ, lambda expressions or even simple properties). Monodevelop = good modern language + gui designer. At the moment it simply rules.