GetClippingRegion
status_t GetClippingRegion(BRegion* region,
void GetClippingRegion(BRegion* region) const;
found.first->GetClippingRegion(&clipRegion);
GetClippingRegion(®ion);
GetClippingRegion(&originalClippingRegion);
GetClippingRegion(®ion);
GetClippingRegion(&invalidRegion);
GetClippingRegion(&clipping);
GetClippingRegion(®ion);