graesslin added a comment.
I'm sorry, but Widgets is a dependency which cannot be used for it. This creates problems in KWin. Tooltip support must be implemented directly in KWin, exposed through the KDecoration API. Yes I know that makes it rather complex, but that's the reason why tooltip support wasn't added to KDecoration through QWidget in the first place. REPOSITORY R129 Window Decoration Library REVISION DETAIL https://phabricator.kde.org/D7246 To: McPain, #breeze, #plasma, graesslin Cc: ngraham, broulik, plasma-devel, #breeze, ZrenBot, progwolff, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart