RegionAt
Region region = Decorator::RegionAt(where, tab);
virtual Region RegionAt(BPoint where, int32& tab) const;
Region region = Decorator::RegionAt(where, tabIndex);
virtual Region RegionAt(BPoint where, int32& tab) const;
virtual Region RegionAt(BPoint where, int32& tab) const;
return decorator->RegionAt(where, tab);
Region region = Decorator::RegionAt(where, tab);
virtual Region RegionAt(BPoint where, int32& tab) const;
switch (satWindow->GetDecorator()->RegionAt(where, tab)) {