gtk-qt-engine | theme engine using Qt for GTK+ 2.x | Mehr ...
The GTK-Qt Theme Engine (also known as gtk-qt-engine) is a GTK 2 theme engine that calls Qt to do the actual drawing. This makes your GTK 2 applications look almost like real Qt applications and gives you a more unified desktop experience. . Please note that this package is targeted at KDE users and therefore provides a way to configure it from within KControl.
gtk2-engines-gtk-qt | transitional dummy package | Mehr ...
This dummy package only exists to smooth the transition from gtk2-engines-gtk-qt to gtk-qt-engines.