Not able to catch keyboard sortcuts command-w in a JDialog, it calls Max menu

    Dec 23 2013 | 5:32 am
    I'm not able to do it... I'm able to catch command+'W' (big W), but not command+'w'. I see the Max File menu blinking in the background when I press it (my JDialog has focus).
    I did once in my MXJ stuff: com.cycling74.max.MaxSystem.registerCommandAccelerators(new char[] { 'X', 'x', 'C', 'c', 'V', 'v', 'W', 'w', 'Z', 'z', 'A', 'a', });
    I tried to do it before/after opening the JDialog, but same problem.
    I feel MaxSystem.registerCommandAccelerators does nothing... Or I'm not using it properly. I'm sure it's called, as I put a trace when I call it.
    I'm sure I can catch everything from keyboard, as every single key press is reported to my KeyEventDispatcher, registered to the main KeyboardFocusManager.
    But no, command+w is not catched.
    How can I achive this ? I want to catch it to implement in my java dialogs the window closing behaviour of this shortcut.