// When the ControlSizeDefinition property changes we need to invalidate
// the parent chain measure so that the RibbonGroupsContainer can calculate
// the new size within the same MeasureOverride call. This property
// usually changes from RibbonGroupsContainer.MeasureOverride.
private static void OnSizePropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
RibbonControl ribbonControl = (RibbonControl)d;
ribbonControl.OnSizePropertyChanged(
(RibbonControlSize)e.OldValue,
(RibbonControlSize)e.NewValue);
}