From: Morton Goldberg <m_goldberg@...>
Date: 2006-07-28T21:42:49+09:00
Subject: Ruby::Tk on OS X event binding hint

On Macintosh OS X, one can use 'Command' and 'Option' as Tk event  
type modifiers to get Command and Option key shortcuts. For example,

    Tk.root.bind('Command-q') {exit}
    Tk.root.bind('Command-Q') {exit}

will give the normal quit-key behavior. Also, if info_mnu is an  
instance of TkMenu,

    Tk.root.bind('Button-2') {|e| info_mnu.popup(e.root_x, e.root_y)}
    Tk.root.bind('Control-Button-1') {|e| info_mnu.popup(e.root_x,  
e.root_y)}

will make info_mnu into a contextual menu. The first binding will  
serve users with a two- or three-button mouse and the second will  
serve those with a one-button mouse.

'Command-' is an alias for 'M1-' and 'Option-' is an alias for 'M2-'.

All of the documentation on Tk event modifiers I've seen so far  
doesn't mention this, so I thought I'd post it here. On a Google  
search I found a blog reference to 'Command', but nothing on  
'Option'. So I don't think this is widely known, but if I'm wrong, I  
apologize for this posting.

Regards, Morton