Can I use function keys as shortcuts?

[mgbf]

This may be a dumb question, but I spent some hours trying to put a function key (F1 to F12) + Ctrl as a shortcut to a button, without success.

Is there anything wrong with the following code snippet?

	KeyIdentifier debugKey2 = new KeyIdentifier();        
        debugKey2.setCtrlKey(true);
        debugKey2.setKeyName("F2");
        
        Page.registerKey(debugKey2, new KeyCallback() {
			
			@Override
			public void execute(String keyName) {
				com.google.gwt.user.client.Window.alert("Ctrl F2");
			}
		});

If I change "F2" to "A", the shortcut Ctrl+A starts working, but I'd like to use the F2 for compatibility reasons.

I'm assuming the keyname for F2 key is F2, since com.smartgwt.client.types.KeyNames does not contain a constant for it.

Can anyone point me to a direction?

Thanks,
Matheus