Before the action center, TrayTip issued only balloon notifications linked to the tray icon. So in case, it did (and still does) make sense that
https://autohotkey.com/docs/commands/TrayTip.htmTrayTip has no effect if the script lacks a tray icon (via #NoTrayIcon or Menu, Tray, NoIcon).
HOWEVER,
http://autohotkey.com/board/topic/14824 ... /?p=728989balloon tips have been completely replaced by "toast" notifications in Windows 10, so TrayTip already produces a "toast" notification.
To me, this should mean that #NoTrayIcon should not suppress "toast" notifications in Windows 10. Is that possible to achieve somehow?