[vtkusers] A question about vtkProgrammableSource class usage

[Cem DEMiRKIR]

Hi everyone,
    I'd like to use vtkProgrammableSource class to read a 3D data file. For
this purpose I've written 
    vtkPolyData* ReadPoints( vtkProgrammableSource* pointSource, const char*
fileName )
function to read the data. But to set this function to the class I need to
use 
    pointSource->SetExecuteMethod( void(*)(void*)f, void* arg ) 
method of the class. But there is no an example in C++ regards to usage of
it and I can not figure out How to call this method by defining f and arg
parameters. How can I set my function to the class to read the data to the
point source object ?
 
    Sincerely
    Cem DEMiRKIR
 
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