Hi, On Windows, a beep sound always plays when using accelerators/mnemonics with the alt key, even if those accelerators exist. It's only supposed to beep when no such key combination is registered.
I've found a solution which never beeps which I believe is preferable, however I'm a bit out of my depth here. https://github.com/DeanWookey/openjdk-jfx/commit/3f8520e22f5090a35097005254133f2eac8f97cc, based on this stack overflow post: https://stackoverflow.com/questions/3662192/disable-messagebeep-on-invalid-syskeypress It appears like Javafx doesn't use the system menu at all? And hence we can safely respond to the WM_MENUCHAR message by closing the system menu? Dean
