Active Application Launcher on Latte Dock by Super button

  • Right click on the dock > Layouts > Configure…
  • In Settings window, go to Preferences tab
  • In Actions section > Tick Press ⌘ to activate Application Launcher

Or

  • Open ~/.config/kwinrc, then add:

    ...
    [ModifierOnlyShortcuts]
    Meta=org.kde.lattedock,/Latte,org.kde.LatteDock,activateLauncherMenu
    ...
    
  • Reload KWin:

    $ qdbus org.kde.KWin /KWin reconfigure
    

    Github QA