[vtkusers] New() method in vtk class hierarchy

[David Cole]

Most VTK classes use "vtkStandardNewMacro" in their .cxx file to 
implement the static New method... You can use the same macro in classes 
of yours that derive from VTK classes...

Does that answer your question?

HTH,
David

Xiaobin Wang wrote:

> Hi all,
> I am writing my own derived class . I find the sensible part in the 
> code lies in
> the New() method.
>
> I looked into some class source code in vtk (e.g. vtkCone,vtkShpere) 
> ,and found
> New methods there just be declared  in header files but not defined . 
> Out of curiosity,
> I want to know when calling the New(), how does vtk return a new object ?
>
> I believe it is the C++ problems (maybe involving static member 
> functions) ,but hope some one here can help me to clarify this problem.
>
> Thanks in advance and looking forward to hearing from you.
>
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