[vtk-developers] Do I need to delete an object when I create a smart pointer of it?

[Mingcheng Chen]

Hi Jorge,

Thank you very much!

-Mingcheng

On Sun, Mar 29, 2015 at 11:06 AM, Jorge Perez <josp.jorge at gmail.com> wrote:

> Hi, you can read here about that topic
> http://www.vtk.org/Wiki/VTK/Tutorials/SmartPointers
>
> HTH
>
> 2015-03-29 18:00 GMT+02:00 Mingcheng Chen <linyufly at gmail.com>:
>
>> Hello,
>>
>> I am always prudent when using VTK, i. e. I never mix the smart pointer
>> and normal pointer of VTK objects.
>>
>> I have a concern. Suppose we have
>>
>> vtkPolyData *mesh = some_function_which_returns_vtkPolyData_star(...);
>> vtkSmartPointer<vtkPolyData> mesh_ptr =
>> vtkSmartPointer<vtkPolyData>(mesh);
>>
>> we should do mesh_ptr->Delete() after, right?
>>
>> However, can we do
>>
>> vtkSmartPointer<vtkPolyData> mesh_ptr =
>> vtkSmartPointer<vtkPolyData>(some_function_which_returns_vtkPolyData_star(...));
>>
>> ?
>>
>> If we do that, how can we delete the reference count to the object before
>> passing it to vtkSmartPointer?
>>
>> Thanks!
>>
>> -Mingcheng
>>
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-- 
Research Assistant in Graphics Group
University of Illinois at Urbana-Champaign
http://mingchengchen.org
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