code: func WmHandledIconsSet(xu *xgbutil.XUtil, handle bool) error {
  	var handled uint
  	if handle {
  		handled = 1
  	} else {
  		handled = 0
  	}
  	return xprop.ChangeProp32(xu, xu.RootWin(), "_NET_WM_HANDLED_ICONS",
  		"CARDINAL", handled)
  }
docs: // _NET_WM_HANDLED_ICONS set