window1
  "window"
  index: 0
  state: active enabled resizable sensitive showing visible
  toolkit: gtk
  window-type: normal
  <AtkComponent>
  layer: window
  alpha: 1
  grid1
    "panel"
    parent: window1
    index: 0
    state: enabled horizontal sensitive showing visible
    toolkit: gtk
    <AtkComponent>
    layer: widget
    alpha: 1
    button1
      "unknown"
      parent: grid1
      index: 0
      state: enabled sensitive showing visible
      toolkit: gtk
      <AtkComponent>
      layer: widget
      alpha: 1
    button2
      "unknown"
      parent: grid1
      index: 1
      state: enabled sensitive showing visible
      toolkit: gtk
      <AtkComponent>
      layer: widget
      alpha: 1
    button3
      "unknown"
      parent: grid1
      index: 2
      state: enabled sensitive showing visible
      toolkit: gtk
      <AtkComponent>
      layer: widget
      alpha: 1