Quit the client when we are told to hide the window. This has no effect unless startonshow is specified and implies keeprunning.
Scoir an cliant nuair a iarrtar orainn an fhuinneog a chur i bhfolach. Níl aon éifeacht ag an rogha seo mura bhfuil an rogha 'startonshow' socraithe, agus leanann 'keeprunning' as.