Ubuntu – GTK+ in Kubuntu apps look bad

evolutiongtkkdeplasmaqt

I have installed Evolution email client on Kubuntu 11.10 and it's not so cute as expected.

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Eclipse also looks bad. I have the GTK+ Appearance plugin in KDE System Settings and already tried QTCurve and Oxygen option, no help. When the GTK+ skin was working, this appearance still showed when I ran an application as root.

Tried:

sudo apt-get install oxygen-molecule gtk2-engines-oxygen

There is a problem with KDE/GTK relation. How can I solve it?

Best Answer

Make sure you have the following packages installed (they should have been installed by kubuntu-desktop, but may have gotten missed):

sudo apt-get install gtk2-engines-oxygen kde-config-gtk

Then go to the KDE Control centre and make sure that the checkbox for using KDE themes in GTK apps is checked.