Windows key don't show up about key-mon HOT 4 CLOSED

You need to either pass --meta to the program or right click and enable the 
meta (aka. 
Windows) key, otherwise it doesn't show.
Did you do that?

Ok did not noticed it, 
Menu key should also be mapped like that

I would disagree.  The menu key isn't used with other keys.
The Windows key is kinda special, you can sometimes use it like a as a single 
click 
(in Windows anyway) but in linux you usually use it in combination, like a 
Shift or 
Alt key.
Since most programs don't use the Windows key I thought it best to have it 
turned off 
by default so as to take up less space.

Ok, no problem for me.
I use menu key in combo on my desktop with compiz for example for an alternate
windows switcher