[vtkusers] SetExecuteMethod(void(* f)(void *), void * arg) ???

[Axel Wendt]

Hello,

I would like to use the vtkProgrammableSource class in a C++ program in the 
same manner as in the TCL example: 
./contrib/examplesTcl/reconstructSurface.tcl.

Can anyone give me an example in C++ of the usage of SetExecuteMethod?

The function look like:
void SetExecuteMethod(void(* f)(void *), void * arg)

I define a function : void ReadPoints ()
then I use
pointSource->SetExecuteMethod( ReadPoints, ??? )


What is wrong? The compiler don't accept the first parameter.
And the second I don't understand . It doesen't seem to be documented in 
the manual or the VTK User's Guide. What is arg and why does the TCL 
example use only one parameter? (Generally you can easily move from TCL to 
C++ - but not in this case!).


thanks for help
Axel


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Axel Wendt
Institute for Applied Photogrammetry and Geoinformatics
Fachhochschule Oldenburg/Ostfriesland/Wilhelmshaven