[Vala] Vala (Gtk 3.0 ) inactive buttons (Buttons : maximize , minimize , close )

[Mariano Gaudix <marianocordobario3 gmail com>]

Hello ........How I can make the buttons   are inactive  ,  the buttons  of
the window  (Buttons : maximize , minimize , close )  or without focus when
the pointer  is    over  them     ? ................

I need to get the effect .   Caso 2 . View image


http://fotos.subefotos.com/607c3fb8e19de4ed18357b85a33b3ab5o.png