[vtkusers] Unregister(QObjectBase *) vs Delete()
sebastian.barth at iosb.fraunhofer.de
Wed Jun 23 05:38:48 EDT 2010
I tried to find out what is the difference between Unregister(QObjectBase *) and Delete() - Without success.
Could you please explain?
What I know about reference counting (please correct me):
vtkPolyDataMapper * mapperA = vtkPolyDataMapper::New(); // Reference count of mapperA = 1.
vtkPolyDataMapper * mapperB = vtkPolyDataMapper::New(); // Reference count of mapperB = 1.
actor->SetMapper(mapperA); // Reference count of mapperA = 2 (or maybe more?)
actor->SetMapper(mapperB); // Reference count of mapperA = 1,
// mapperB = 2 (or maybe more?)
mapperA->Delete(); // Reference count of mapper A - 1 = 0 -> deleted
Is this code above a correct way or is it illegal for the pipeline?
What happens if I call mapperB->Unregister(0) ?
Where is difference between Unregister(..) and Delete()?
Thanks a lot,
More information about the vtkusers