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.
Le roinnt feidhmchlár (neamh- KDE), is leor aicme fhuinneoige iomlán chun fuinneog ar leith i bhfeidhmchlár a roghnú, toisc go bhfuil aicme fhuinneoige iomlán socraithe sa chaoi go bhfuil an feidhmchlár agus an ról fuinneoige inti.