http://java.net/jira/browse/MACOSX_PORT-189 submitted 2011/07/26 by Yuri Nesterenko
Add a mouse listener to a Button or JButton. Press and release a mouse button together with a key modifier, Ctrl, Cmd, and/or Alt. Print the MOUSE_PRESSED and MOUSE_RELEASED events.
As of mid-July, there may be reported rather strange assortment of modifiers. For instance, Alt+Button1 will be reported as Alt+Button1+Button2 and Ctrl+Button3 as Meta+Ctrl+Button3, as if some bit in the mask was not cleared somewhere.