Met sommige (non- KDE) toepasings kan volledige venster klas genoegsaam wees viruitkies van 'n spesifieke venster in' n toepassing, omdat hulle volledige venster klas instelom beide toepassing en venster rol te bevat.
With some (non-KDE) applications whole window class can be sufficient for selecting a specific window in an application, as they set whole window class to contain both application and window role.