[vtkusers] VTK/Java crashes -- WeakGlobalRef or garbage collection problem...solution?

[Nathan P Sharp]

Denis Barbier escribió:
>
> May vtkDefaultDispose be a singleton?  That would avoid the creation
> of an instance for each vtkObjectBase.
> Could you also please post your changes in native code for VTKDelete?
> I will then re-send your changes as a patch against cvshead.
>   
I didn't make it a formal singleton, but it is static so there won't be
one per object. 

I hadn't written the native code yet!  But I did today and it all seems
to be doing quite nicely against head from a couple of days ago. 
Attached is the file.  Thank you for turning it into a patch, trying to
dive through the generator code would probably take me a while if you
want the end results to be clean ;-)

As my next step, I'm digging around on my memory leaks using a
commercial memory checker.  The first one I have enough info on to
report is that the generator code is not deleting the return value from
vtkJavaUTFToChar().  An example is vtkRenderWindowInteractorJava.cxx,
Java_vtk_vtkRenderWindowInteractor_SetEventInformationFlipY_192(), line
985. 

  Nathan
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