AncestorVisibilityChanged
virtual void AncestorVisibilityChanged(bool shown);
virtual void AncestorVisibilityChanged(bool shown);
virtual void AncestorVisibilityChanged(bool shown);
virtual void AncestorVisibilityChanged(bool shown);
BLayout::AncestorVisibilityChanged(shown);
BLayoutItem::AncestorVisibilityChanged(shown);
item->AncestorVisibilityChanged(fAncestorsVisible);
ItemAt(i)->AncestorVisibilityChanged(show);
virtual void AncestorVisibilityChanged(bool shown);