Version: 1.2-beta (using KDE 3.1.4) Installed from: compiled sources Compiler: gcc version 3.2.3 OS: Linux (i686) release 2.4.22 You can add an interface widget to a class diagram. There, all added operations should be marked as abstract, because an interface only has abstract functions.
I meant the thing described in bug report #67770. *** This bug has been marked as a duplicate of 67770 ***