top-level window's title bar handling

[Ofer Oshri <ofer oshri xeround com>]

hi,
i am trying to disable the minimize/maximize/menu icons from the title bar of a top-level window (keeping only the close icon) with no luck.  i thought the way to do it is through the gdk::window and its method set_decorations() but i could not access the top_window's gdk::window.  is there a way to disable those icons from the title bar?
also, is there a way to know the height of the top-level window title bar?
thanks in advance,
ofer.