[vtkusers] Problem with array not being deleted

[Normand Mongeau]

OK, makes sense I guess.  I'll try to read up on VTK's reference counting, 
although I'm very familiar with the concept.

Thanks,

Normand

----- Original Message ----- 
From: "Berk Geveci" <berk.geveci at kitware.com>
To: "Normand Mongeau" <nmongeau at videotron.ca>
Cc: <vtkusers at vtk.org>
Sent: Thursday, October 11, 2007 7:33 PM
Subject: Re: [vtkusers] Problem with array not being deleted


> You have to call Delete() or UnRegister() on the charArray after
> adding it with SetScalars() otherwise it will leak. I recommend
> reading up on reference counting. I believe both of the VTK books have
> a section on it. Also, VTK's reference counting implementation is very
> similar to that of Objective C. Apple has several good documents on
> that.
>
> -berk
>
> On 10/11/07, Normand Mongeau <nmongeau at videotron.ca> wrote:
>>
>>
>> Hi,
>>
>> I have a problem in C++, that goes like this:
>>
>> vtkImageData *workingImage = vtkImageData::New();
>> workingImage->SetNumberOfScalarComponents( 1 );
>> entireData = (unsigned char*)malloc(someSize);
>> workingImage->SetScalarTypeToUnsignedChar();
>> vtkUnsignedCharArray *charArray = vtkUnsignedCharArray::New( );
>> charArray->SetNumberOfComponents( 1 );
>> charArray->SetArray( entireData, someSize, 0 ); // 0 means to delete 
>> after
>> use
>> workingImage->GetPointData()->SetScalars( charArray );
>> workingImage->Delete();
>>
>>
>> The problem is that my malloc'ed array never gets deleted.  In fact, the
>> vtkUnsignedCharArray itself never gets deleted.
>>
>> Is there a fix/workaround to this?
>>
>> Thanks,
>>
>> Normand
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